A grinding machine

Abstract

The present invention relates to the technical field of grinders, and particularly to a grinder, which includes a main body, a grinding cup and a grinding knife set. The grinding cup is installed on the main body, and the grinding knife set is rotatably connected in the grinding cup and driven to rotate by the main body. The grinding knife set includes a rotating shaft, an upper blade and a lower blade arranged on the rotating shaft. In the up and down projection direction, the upper blade and the lower blade are arranged at 90°. The upper blade is twisted, and this twist makes the angle between the material receiving surface of the upper blade and the horizontal plane larger as it goes outward. The lower blade is in a horizontal shape that gradually narrows from the middle to the end, and the ends of the lower blade are all provided with flanges extending obliquely upward and outward. The inner wall of the grinding cup is provided with a plurality of collision protrusions, and the bottom surface of the grinding cup is provided with a plurality of collision bumps. By combining the horizontal lower blade with the twisted upper blade, this kind of grinder can form a more complex cutting path, making the movement track of the material in the grinding cup complex and changeable, and improving the uniformity and consistency of the ground product.

Description

Technical Field

[0001] The invention relates to the technical field of food processing equipment, in particular to a grinder. Background Art

[0002] As a common food processing equipment, grinders are widely used in the fields of material crushing, grinding and mixing. Their working principle is mainly to cut, impact and rub materials through high-speed rotating blades, so as to achieve material refinement, homogenization or modification. However, in the existing grinder design, the blades of the blade assembly generally only use horizontal blades. During the grinding process, due to the relatively single cutting method of the horizontal blade, the flow of materials in the grinder is restricted, and it is difficult to form an effective circulation, resulting in poor crushing uniformity of the material during the grinding process, and local over-grinding or under-grinding is prone to occur, thereby affecting the particle size distribution and uniformity of the final product. To this end, it is necessary to improve the existing technology to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a grinder, aiming to solve the problem that the grinder in the prior art only uses horizontal blades, resulting in poor crushing uniformity of materials during the grinding process.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a grinding machine, including a main machine, a grinding cup and a grinding knife group, the grinding cup is installed on the main machine, the grinding knife group is rotatably connected in the grinding cup and driven to rotate by the main machine, the grinding knife group includes a rotating shaft and an upper blade and a lower blade arranged on the rotating shaft; in the upper and lower projection directions, the upper blade and the lower blade are arranged at 90 degrees; the upper blade is twisted and the twisting makes the angle between the material-facing surface of the upper blade and the horizontal plane larger as it moves outward; the lower blade is horizontal and gradually narrows from the middle to the end, and the end of the lower blade is provided with a warped edge extending obliquely in an outward and upward direction; the inner wall of the grinding cup is provided with a plurality of collision protrusions, and the bottom surface of the grinding cup is provided with a plurality of collision convex points.

[0005] Furthermore, the upper blade is obtained by shortening and rotating the central section of the upper blade at the center and smoothing it along a straight line radially outward; the upper blade is respectively cut with a plane parallel to the central section at the center to obtain characteristic sections one, two, three and four; the central section includes a section material-facing line and a section material-backing line, both of which are straight lines, and the two sides of the section material-facing line and the section material-backing line are respectively connected by means of the front edge of the section and the rear edge of the section, and after a smooth transition, the section material-facing line, the section material-backing line, the front edge of the section and the rear edge of the section are respectively smoothed into the material-facing surface, the material-backing surface, the blade and the back of the blade of the upper blade;

[0006] During the smoothing process from the central cross-section of the upper blade to the first characteristic cross-section, the scaling of the cross-section feeding line remains the same; during the smoothing process from the first characteristic cross-section to the second, third, and fourth characteristic cross-sections, the scaling of the cross-section feeding line gradually shortens.

[0007] Furthermore, the length L1 of the cross-section feeding line of the central cross-section is 16 mm - 20 mm, the length L2 of the cross-section feeding line of the first characteristic cross-section is 16 mm - 20 mm, the length L3 of the cross-section feeding line of the second characteristic cross-section is 12 mm - 16 mm, the length L4 of the cross-section feeding line of the third characteristic cross-section is 7 mm - 11 mm, and the length L5 of the cross-section feeding line of the fourth characteristic cross-section is 2 mm - 6 mm.

[0008] Furthermore, the angle ∠1 between the cross-section feeding line of the first characteristic cross-section and the cross-section feeding line of the central cross-section is 0°, the angle ∠2 between the cross-section feeding line of the second characteristic cross-section and the cross-section feeding line of the central cross-section is 7° - 11°, the angle ∠3 between the cross-section feeding line of the third characteristic cross-section and the cross-section feeding line of the central cross-section is 26° - 30°, and the angle ∠4 between the cross-section feeding line of the fourth characteristic cross-section and the cross-section feeding line of the characteristic cross-section is 32° - 37°.

[0009] Furthermore, the angle ∠5 between the curled edge and the horizontal plane is 90° - 100°.

[0010] Furthermore, in the up and down projection direction, the outer contour of one side of the lower blade includes a sequentially connected upper flat section, upper right inclined section, right curled arc section, right curled vertical section, right curled inclined section, lower right inclined section, and lower flat section.

[0011] Furthermore, both the angle ∠6 between the upper right inclined section and the upper flat section and the angle ∠7 between the lower right inclined section and the lower flat section are 6° - 10°.

[0012] Furthermore, the diameter D1 of the grinding cup is 130 mm - 135 mm, the collision protrusion is triangular and the protruding distance D2 is 2 mm - 4 mm, the rotation diameter D3 of the upper blade is 75 mm - 85 mm, and the rotation diameter D4 of the lower blade is 110 mm - 115 mm; the distance D5 between the collision protrusion and the bottom of the inner wall of the grinding cup is 7 mm - 9 mm; the distance D6 between the lower blade and the bottom of the inner wall of the grinding cup is 5 mm - 7 mm, and the distance D7 between the upper blade and the lower blade is 7 mm - 9 mm; the length L6 of the collision protrusion is 65 mm - 75 mm; there are two circles of collision convex points on the bottom surface of the grinding cup. The first circle of collision convex points is distributed around the circumference of a circle with a diameter 1 of 45 mm - 55 mm on the bottom surface of the grinding cup, and the second circle of collision convex points is with a diameter 2 is distributed in a circular ring with a circumference of 95 mm - 105 mm on the bottom surface of the grinding cup. The collision bumps are conical and the protruding distance D8 is 3 mm - 4 mm.

[0013] Furthermore, the thickness T1 of the upper blade is 1 mm - 2 mm; the thickness T2 of the lower blade is 1.5 mm - 2.5 mm.

[0014] Furthermore, the main body is provided with a function control module. The function control module is provided with multiple food grades, a coarse grinding grade and a fine grinding grade. Under different food grades, the coarse grinding grade and the fine grinding grade, the function control module controls the grinding knife group to rotate at different rhythms so that the food is ground into the required degree. The different rhythms mean that the grinding knife group is controlled to work in multiple time periods in segments. In different time periods, the grinding knife group rotates at a specific rotation direction, a specific rotation speed for a specific duration and then pauses for a specific duration.

[0015] Compared with the prior art, the grinding machine provided by the present invention can form a more complex cutting path through the combination of the horizontal lower blade and the twisted upper blade, and make the material generate more complex up and down displacements, so that the movement track of the material in the grinding cup is complex and changeable, effectively covering the grinding area, avoiding the situation of local over-grinding or under-grinding of the material during the grinding process, thereby improving the uniformity and consistency of the ground product. At the same time, during the grinding process, the material rotates with the grinding knife group and collides with the collision bumps on the inner wall of the grinding cup and the collision bumps on the bottom surface. Under the impact, the material rebounds radially, increasing the contact opportunity between the material and the grinding knife group, enabling the grinding knife group to cut, extrude and impact the material more fully, thereby accelerating the crushing and grinding process of the material and being beneficial to improving the grinding efficiency. Description of the Drawings

[0016] Figure 1 is the three-dimensional structure schematic diagram of the present invention;

[0017] Figure 2 is the cross-sectional view of the present invention;

[0018] Figure 3 is the cross-sectional view of the grinding cup and the grinding knife group;

[0019] Figure 4 is the top view of the grinding cup and the grinding knife group;

[0020] Figure 5 is the top view of the grinding cup;

[0021] Figure 6 is the three-dimensional structure schematic diagram of the grinding knife group;

[0022] Figure 7 is the top view of the lower blade;

[0023] Figure 8 It is the front view of the lower blade;

[0024] Figure 9 It is the schematic three-dimensional structure diagram of the upper blade;

[0025] Figure 10 It is the top view of the upper blade;

[0026] Figure 11 It is Figure 10 the sectional view at A-A in

[0027] Figure 12 It is Figure 10 the sectional view at B-B in

[0028] Figure 13 It is Figure 10 the sectional view at C-C in

[0029] Figure 14 It is Figure 10 the sectional view at D-D in

[0030] Figure 15 It is Figure 10 the sectional view at E-E in

[0031] Figure 16 It is the schematic diagram of the function control module.

[0032] Explanation of reference numerals:

[0033] 1. Main machine;

[0034] 2. Grinding cup; 21. Collision protrusion; 22. Collision bump;

[0035] 3. Grinding knife set;

[0036] 4. Rotating shaft;

[0037] 5. Upper blade; 51. Sectional material feeding line; 52. Sectional material discharging line; 53. Front edge of the section; 54. Rear edge of the section; 55. Material feeding surface; 56. Material discharging surface; 57. Blade edge; 58. Blade back;

[0038] 6. Lower blade; 60. Flanging; 61. Upper flat section; 62. Upper right inclined section; 63. Right warping arc section; 64. Right warping vertical section; 65. Right warping inclined section; 66. Lower right inclined section; 67. Lower flat section. Specific implementation mode

[0039] The present invention will be described in detail below in conjunction with specific embodiments.

[0040] In the present invention, unless otherwise clearly specified and defined, when terms such as "disposed on", "connected", or "coupled" appear, these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or connected through one or more intermediate media. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. For the directional terms in the present invention, they are for better explaining the characteristics of the features and the relationships between the features. It should be understood that when the placement direction of the present invention changes, the directions of the characteristics of the features and the relationships between the features also change accordingly. Therefore, the directional terms do not constitute an absolute limitation on the characteristics of the features and the relationships between the features in space, but only play a relative limiting role.

[0041] The present invention provides a grinder, as Figures 1 to 16 shown, which includes a main body 1, a grinding cup 2, and a grinding blade set 3. The grinding cup 2 is installed on the main body 1. The grinding blade set 3 is rotatably connected inside the grinding cup 2 and is driven to rotate by the main body 1. The grinding blade set 3 includes a rotating shaft 4, an upper blade 5, and a lower blade 6 disposed on the rotating shaft 4. In the vertical projection direction, the upper blade 5 and the lower blade 6 are arranged at 90°. The upper blade 5 is twisted, and the twist causes the included angle between the material-receiving surface 55 of the upper blade 5 and the horizontal plane to increase outward. The lower blade 6 is horizontally shaped with a gradually narrowing middle to the end, and a flanging 60 is provided at the end of the lower blade 6, which extends obliquely upward and outward. The setting of the flanging 60 enables the lower blade 6 to cover a wider area during cutting or grinding, thereby increasing the contact area with the material and improving the cutting or grinding efficiency. A plurality of collision protrusions 21 are provided on the inner wall of the grinding cup 2, and a plurality of collision bumps 22 are provided on the bottom surface of the grinding cup 2.

[0042] Based on the above structural settings, this grinder can form a more complex cutting path through the combination of the horizontal lower blade 6 and the twisted upper blade 5, and cause the material to have a more complex up-and-down displacement, making the movement trajectory of the material in the grinding cup 2 complex and variable, effectively covering the grinding area, and avoiding the situation of local over-grinding or under-grinding of the material during the grinding process, thereby improving the uniformity and consistency of the ground product. At the same time, during the grinding process, the material rotates with the grinding blade set 3 and collides with the collision protrusions 21 on the inner wall of the grinding cup 2 and the collision bumps 22 on the bottom surface. Under the impact, the material rebounds radially, increasing the contact opportunity between the material and the grinding blade set 3, enabling the grinding blade set 3 to cut, extrude, and impact the material more fully, thereby accelerating the crushing and grinding process of the material and being beneficial to improving the grinding efficiency.

[0043] It is easy to understand that, like the prior art, both the upper blade 5 and the lower blade 6 are centrosymmetric structures. Therefore, in this embodiment, the description method of the blade is to only describe one half, and the other half is centrosymmetric with this one half.

[0044] In this embodiment, if Figure 10 As shown, the upper blade 5 is obtained by shortening, rotating and smoothing the central section (AA) of the upper blade 5 at the center; Figure 10 H1 in), 20mm ( Figure 10 H2), 30mm ( Figure 10 H3) and 40mm ( Figure 10 The upper blade 5 is cut at the position of H4 in the figure, and the plane parallel to the central section (AA) located at the center is used to cut the upper blade 5 respectively to obtain characteristic sections 1 (BB), 2 (CC), 3 (DD) and 4 (EE); the central section (AA) includes a section material-facing line 51 and a section material-backing line 52, and both the section material-facing line 51 and the section material-backing line 52 are straight lines. The two sides of the section material-facing line 51 and the section material-backing line 52 are connected by the front side 53 and the rear side 54 of the section, and the smooth transition is performed. Afterwards, the cross-section material-facing line 51, the cross-section material-backing line 52, the cross-section front edge 53 and the cross-section rear edge 54 are respectively smoothed into the material-facing surface 55, the material-backing surface 56, the blade 57 and the blade back 58 of the upper blade 5; in the process of smoothing from the central cross section (AA) of the upper blade 5 to the characteristic cross section 1 (BB), the cross-section material-facing line 51 is scaled to be equal; in the process of smoothing from the characteristic cross section 1 (BB) to the characteristic cross section 2 (CC), the characteristic cross section 3 (DD) and the characteristic cross section 4 (EE), the cross-section material-facing line 51 is scaled to be gradually shortened. Except for the upper characteristic cross section, other positions are smooth transitions. When the twisted upper blade 5 rotates, due to the special shape, it can generate lifting force and radial outward thrust, so that the material keeps rolling in the grinding cup 2, so as to avoid the fixed stratification of the material, resulting in only a part of the material always contacting the blade while the other part of the material cannot contact the blade, further promoting the uniform refinement of the material.

[0045] In this embodiment, if Figures 11 to 15As shown, the length L1 of the material receiving line 51 of the central cross-section (A-A) is 16 mm - 20 mm. Further preferably, the length L1 of the material receiving line 51 of the central cross-section (A-A) is 18 mm; the length L2 of the material receiving line 51 of the first characteristic cross-section (B-B) is 16 mm - 20 mm. Further preferably, the length L2 of the material receiving line 51 of the first characteristic cross-section (B-B) is 18 mm; the length L3 of the material receiving line 51 of the second characteristic cross-section (C-C) is 12 mm - 16 mm. Further preferably, the length L3 of the material receiving line 51 of the second characteristic cross-section (C-C) is 14 mm; the length L4 of the material receiving line 51 of the third characteristic cross-section (D-D) is 7 mm - 11 mm. Further preferably, the length L4 of the material receiving line 51 of the third characteristic cross-section (D-D) is 9.5 mm; the length L5 of the material receiving line 51 of the fourth characteristic cross-section (E-E) is 2 mm - 6 mm. Further preferably, the length L5 of the material receiving line 51 of the fourth characteristic cross-section (E-E) is 4 mm.

[0046] In this embodiment, as Figures 12 to 15 shown, the angle ∠1 between the material receiving line 51 of the first characteristic cross-section (B-B) and the material receiving line 51 of the central cross-section (A-A) is 0°; the angle ∠2 between the material receiving line 51 of the second characteristic cross-section (C-C) and the material receiving line 51 of the central cross-section (A-A) is 7° - 11°. Further preferably, the angle ∠2 between the material receiving line 51 of the second characteristic cross-section (C-C) and the material receiving line 51 of the central cross-section (A-A) is 9°; the angle ∠3 between the material receiving line 51 of the third characteristic cross-section (D-D) and the material receiving line 51 of the central cross-section (A-A) is 26° - 30°. Further preferably, the angle ∠3 between the material receiving line 51 of the third characteristic cross-section (D-D) and the material receiving line 51 of the central cross-section (A-A) is 28°; the angle ∠4 between the material receiving line 51 of the fourth characteristic cross-section (E-E) and the material receiving line 51 of the central cross-section (A-A) is 32° - 37°. Further preferably, the angle ∠4 between the material receiving line 51 of the fourth characteristic cross-section (E-E) and the material receiving line 51 of the central cross-section (A-A) is 35°.

[0047] The above settings of the length and angle are the best choices to achieve the best grinding effect.

[0048] In this embodiment, as Figure 8 shown, the angle ∠5 between the warped edge 60 and the horizontal plane is 90° - 100°. Further preferably, the angle ∠5 between the warped edge 60 and the horizontal plane is 95°.

[0049] In this embodiment, as Figure 7As shown, in the up and down projection direction, the outer contour of one side of the lower blade 6 includes a sequentially connected upper flat section 61, upper right inclined section 62, right upward arc section 63, right upward vertical section 64, right upward inclined section 65, lower right inclined section 66 and lower flat section 67.

[0050] In this embodiment, as Figure 7 shown, the angles of the included angle ∠6 between the upper right inclined section 62 and the upper flat section 61 and the included angle ∠7 between the lower right inclined section 66 and the lower flat section 67 are both 6° - 10°. Further preferably, the angles of the included angle ∠6 between the upper right inclined section 62 and the upper flat section 61 and the included angle ∠7 between the lower right inclined section 66 and the lower flat section 67 are both 8°.

[0051] Through the above structural design, the grinding effect of the lower blade 6 is better.

[0052] In this embodiment, as Figure 3 、 Figure 4 and Figure 5 shown, the diameter D1 of the grinding cup 2 is 130mm - 135mm. Further preferably, the diameter D1 of the grinding cup 2 is 132mm; the collision protrusion 21 is triangular and the protruding distance D2 is 2mm - 4mm. Further preferably, the protruding distance D2 of the collision protrusion 21 is 3mm; the rotation diameter D3 of the upper blade 5 is 75mm - 85mm. Further preferably, the rotation diameter D3 of the upper blade 5 is 80mm; the rotation diameter D4 of the lower blade 6 is 110mm - 115mm. Further preferably, the rotation diameter D4 of the lower blade 6 is 112mm; the distance D5 between the collision protrusion 21 and the bottom of the inner wall of the grinding cup 2 is 7mm - 9mm. Further preferably, the distance D5 between the collision protrusion 21 and the bottom of the inner wall of the grinding cup 2 is 8mm; the distance D6 between the lower blade 6 and the bottom of the inner wall of the grinding cup 2 is 5mm - 7mm. Further preferably, the distance D6 between the lower blade 6 and the bottom of the inner wall of the grinding cup 2 is 6mm; the distance D7 between the upper blade 5 and the lower blade 6 is 7mm - 9mm. Further preferably, the distance D7 between the upper blade 5 and the lower blade 6 is 8mm; the length L6 of the collision protrusion 21 is 65mm - 75mm. Further preferably, the length L6 of the collision protrusion 21 is 70mm; two circles of collision bumps 22 are arranged on the bottom surface of the grinding cup 2. The first circle of collision bumps 22 is distributed in a circular ring with a diameter 1 of 45mm - 55mm on the bottom surface of the grinding cup 2. Further preferably, the first circle of collision bumps 22 is distributed in a circular ring with a diameter 1 of 50mm on the bottom surface of the grinding cup 2; the second circle of collision bumps 22 is distributed in a circular ring with a diameter 2 of 95mm - 105mm on the bottom surface of the grinding cup 2. Further preferably, the second circle of collision bumps 22 is distributed in a circular ring with a diameter Circular rings with a diameter of 100 mm are circumferentially distributed on the bottom surface of the grinding cup 2; the collision bumps 22 are conical and the protruding distance D8 is 3 mm - 4 mm. Further preferably, the collision bumps 22 are conical and the protruding distance D8 is 3.5 mm. With the above parameter settings, the particle size of the ground material can be made more uniform, the quality can be made more stable, the grinding efficiency can be improved, and the grinding time and energy consumption can be reduced.

[0053] In this embodiment, as Figure 8 and Figure 11 shown, the thickness T1 of the upper blade 5 is 1 mm - 2 mm. Further preferably, the thickness T1 of the upper blade 5 is 1.5 mm; the thickness T2 of the lower blade 6 is 1.5 mm - 2.5 mm. Further preferably, the thickness T2 of the lower blade 6 is 2 mm. The above blade thicknesses make the blades have higher strength, can withstand greater grinding pressure and impact force, are not easily deformed or damaged, help to maintain the stability and precision of the grinder, and with the size relationship of the grinding cup 2 and the above specific blade sizes, the grinding effect is better.

[0054] In this embodiment, as Figure 16 shown, the main body 1 is provided with a function control module. The function control module is provided with multiple food files, a coarse grinding file and a fine grinding file. Under different food files, in the coarse grinding file and the fine grinding file, the function control module controls the grinding knife group 3 to rotate at different rhythms so that the food is ground into the required degree. The different rhythms mean that the grinding knife group 3 is controlled to work in multiple time periods in segments. In different time periods, the grinding knife group 3 rotates at a specific rotation direction, a specific rotation speed for a specific duration and then pauses for a specific duration.

[0055] Specifically, the food files include rice file, coix seed file, sesame file, pepper file, red bean file, mung bean file, lotus seed file, peanut file, pseudo-ginseng file, donkey-hide gelatin file, notoginseng file, Chinese yam file, cinnamon file, ginseng file, dried chili file, star anise file, coffee bean file and rock sugar file.

[0056] When the rice file, coix seed file, sesame file or pepper file is selected, in the coarse grinding file, the grinding knife group 3 first runs clockwise at the maximum speed of 20000 r / min for 2 seconds and stops for 1 second. After performing the above three cycles, it stops; in the fine grinding file, the grinding knife group 3 first runs clockwise at the maximum speed of 20000 r / min for 3 seconds and stops for 1 second. After performing the above three cycles, finally it runs clockwise at the maximum speed of 20000 r / min for 20 seconds and stops.

[0057] When the red bean file, mung bean file, lotus seed file or peanut file is selected, in the coarse grinding file, the grinding knife set 3 first runs clockwise at the highest speed of 20,000 r / min for 2 seconds and stops for 1 second, then runs clockwise at a low speed of 10,000 r / min for 2 seconds and stops for 1 second, and finally runs clockwise at the highest speed of 20,000 r / min for 3 seconds and stops; in the fine grinding file, the grinding knife set 3 first runs clockwise at the highest speed of 20,000 r / min for 3 seconds and stops for 1 second, then runs clockwise at a medium speed of 15,000 r / min for 3 seconds and stops for 1 second, and finally runs clockwise at the highest speed of 20,000 r / min for 20 seconds and stops.

[0058] When the pseudo-ginseng file, donkey-hide gelatin file or notoginseng file is selected, in the coarse grinding file, the grinding knife set 3 first runs clockwise at the highest speed of 20,000 r / min for 3 seconds and stops for 1 second, then runs counterclockwise at the highest speed of 20,000 r / min for 3 seconds and stops for 1 second, and finally runs clockwise at the highest speed of 20,000 r / min for 20 seconds and stops; in the fine grinding file, the grinding knife set 3 first runs clockwise at the highest speed of 20,000 r / min for 6 seconds and stops for 1 second, then runs counterclockwise at the highest speed of 20,000 r / min for 6 seconds and stops for 1 second, and finally runs clockwise at the highest speed of 20,000 r / min for 30 seconds and stops.

[0059] When the Chinese yam file, cinnamon file or ginseng file is selected, in the coarse grinding file, the grinding knife set 3 first runs clockwise at the highest speed of 20,000 r / min for 3 seconds and stops for 1 second, then runs counterclockwise at a medium speed of 15,000 r / min for 3 seconds and stops for 1 second, performs the above two cycles, and finally runs clockwise at the highest speed of 20,000 r / min for 10 seconds and stops; in the fine grinding file, the grinding knife set 3 first runs clockwise at the highest speed of 20,000 r / min for 6 seconds and stops for 1 second, then runs counterclockwise at the highest speed of 20,000 r / min for 6 seconds and stops for 1 second, performs the above two cycles, and finally runs clockwise at the highest speed of 20,000 r / min for 20 seconds and stops.

[0060] When the dried chili file or star anise file is selected, in the coarse grinding file, the grinding knife set 3 first runs clockwise at a medium speed of 15,000 r / min for 3 seconds and stops for 1 second, then runs counterclockwise at a low speed of 10,000 r / min for 3 seconds and stops for 1 second, performs the above two cycles, and finally runs clockwise at a medium speed of 15,000 r / min for 10 seconds and stops; in the fine grinding file, the grinding knife set 3 first runs clockwise at a medium speed of 15,000 r / min for 6 seconds and stops for 1 second, then runs counterclockwise at a low speed of 10,000 r / min for 6 seconds and stops for 1 second, performs the above two cycles, and finally runs clockwise at a medium speed of 15,000 r / min for 8 seconds and stops.

[0061] When the coffee bean mode is selected, in the coarse grinding mode, the grinding cutter set 3 first runs clockwise at the maximum speed of 20000 r / min for 2 seconds and stops for 1 second, then runs clockwise at the medium speed of 15000 r / min for 2 seconds and stops for 1 second, and finally runs clockwise at the maximum speed of 20000 r / min for 6 seconds and then stops; in the fine grinding mode, the grinding cutter set 3 first runs clockwise at the maximum speed of 20000 r / min for 5 seconds and stops for 1 second, then runs clockwise at the medium speed of 15000 r / min for 5 seconds and stops for 1 second, and finally runs clockwise at the maximum speed of 20000 r / min continuously for 30 seconds and then stops.

[0062] When the rock sugar mode is selected, in the coarse grinding mode, the grinding cutter set 3 first runs clockwise at the maximum speed of 20000 r / min for 3 seconds and stops for 1 second, then runs clockwise at the low speed of 10000 r / min for 2 seconds and stops for 1 second, and finally runs clockwise at the maximum speed of 20000 r / min for 6 seconds and then stops; in the fine grinding mode, the grinding cutter set 3 first runs clockwise at the maximum speed of 20000 r / min for 5 seconds and stops for 1 second, then runs clockwise at the low speed of 15000 r / min for 5 seconds and stops for 1 second, and finally runs clockwise at the maximum speed of 20000 r / min continuously for 30 seconds and then stops.

[0063] Under the control of the function control module, in cooperation with the grinding cup 2 and the grinding cutter set 3 provided in this embodiment, through experiments, the above grinding rhythm can achieve the best grinding effect.

[0064] In summary, this kind of grinder can solve the problem that the existing grinders only use horizontal blades, resulting in poor evenness of material crushing during the grinding process.

[0065] Without conflict, the above embodiments and the features in the embodiments can be combined with each other.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A grinding machine, comprising a main machine (1), a grinding cup (2) and a grinding knife group (3), wherein the grinding cup (2) is mounted on the main machine (1), and the grinding knife group (3) is rotatably connected to the grinding cup (2) and driven to rotate by the main machine (1), characterized in that: The grinding blade assembly (3) comprises a rotating shaft (4) and an upper blade (5) and a lower blade (6) arranged on the rotating shaft (4); in the vertical projection direction, the upper blade (5) and the lower blade (6) are arranged at 90 degrees; the upper blade (5) is twisted and the twist causes the angle between the material-facing surface (55) of the upper blade (5) and the horizontal plane to increase as it moves outward; the lower blade (6) is horizontal and gradually narrows from the middle to the end, and the end of the lower blade (6) is provided with a warped edge (60) extending obliquely in an outward and upward direction; the inner wall of the grinding cup (2) is provided with a plurality of collision protrusions (21), and the bottom surface of the grinding cup (2) is provided with a plurality of collision convex points (22); The upper blade (5) is obtained by shortening and rotating the central section at the center of the upper blade (5) and smoothing the straight line radially outward; the upper blade (5) is cut with a plane parallel to the central section at the center to obtain characteristic sections one, two, three and four; the central section includes a section material-facing line (51) and a section material-receiving line (52); the section material-facing line (51) and the section material-receiving line (52) are both straight lines; the two sides of the section material-facing line (51) and the section material-receiving line (52) are connected by means of a section front edge (53) and a section rear edge (54); after smooth transition, the section material-facing line (51), the section material-receiving line (52), the section front edge (53) and the section rear edge (54) are smoothed into a material-facing surface (55), a material-receiving surface (56), a blade (57) and a blade back (58) of the upper blade (5); In the process of smoothing from the central section of the upper blade (5) to the characteristic section 1, the scaling of the section material-facing line (51) is equal in size; In the process of smoothing from the characteristic section 1 to the characteristic section 2, the characteristic section 3 and the characteristic section 4, the scaling of the section material-facing line (51) is gradually shortened; The length L1 of the cross-section material-joining line (51) of the central cross-section is 16 mm-20 mm, the length L2 of the cross-section material-joining line (51) of the characteristic cross-section one is 16 mm-20 mm, the length L3 of the cross-section material-joining line (51) of the characteristic cross-section two is 12 mm-16 mm, the length L4 of the cross-section material-joining line (51) of the characteristic cross-section three is 7 mm-11 mm, and the length L5 of the cross-section material-joining line (51) of the characteristic cross-section four is 2 mm-6 mm; The angle ∠1 between the cross-section feed line (51) of the characteristic section one and the cross-section feed line (51) of the central section is 0°, the angle ∠2 between the cross-section feed line (51) of the characteristic section two and the cross-section feed line (51) of the central section is 7°-11°, the angle ∠3 between the cross-section feed line (51) of the characteristic section three and the cross-section feed line (51) of the central section is 26°-30°, and the angle ∠4 between the cross-section feed line (51) of the characteristic section four or five and the cross-section feed line (51) of the central section is 32°-37°.

2. The grinding machine according to claim 1, characterized in that: The angle ∠5 between the warped edge (60) and the horizontal plane is 90°-100°.

3. The grinding machine according to claim 1, characterized in that: In the up and down projection direction, the outer contour of one side of the lower blade (6) comprises an upper flat section (61), an upper right inclined section (62), a right curved section (63), a right vertical section (64), a right inclined section (65), a lower right inclined section (66) and a lower flat section (67) which are connected in sequence.

4. The grinding machine according to claim 3, characterized in that: The angle ∠6 between the upper right inclined section (62) and the upper flat section (61) and the angle ∠7 between the lower right inclined section (66) and the lower flat section (67) are both 6°-10°.

5. The grinding machine according to claim 1, characterized in that: The diameter D1 of the grinding cup (2) is 130 mm to 135 mm, the collision protrusion (21) is triangular and the protrusion distance D2 is 2 mm to 4 mm, the rotation diameter D3 of the upper blade (5) is 75 mm to 85 mm, and the rotation diameter D4 of the lower blade (6) is 110 mm to 115 mm; The distance D5 between the collision protrusion (21) and the bottom of the inner wall of the grinding cup (2) is 7 mm to 9 mm; the distance D6 between the lower blade (6) and the bottom of the inner wall of the grinding cup (2) is 5 mm to 7 mm; the distance D7 between the upper blade (5) and the lower blade (6) is 7 mm to 9 mm; the length L6 of the collision protrusion (21) is 65 mm to 75 mm; The bottom surface of the grinding cup (2) is provided with two circles of collision convex points (22), the first circle of collision convex points (22) having a diameter of 1 is a circular ring with a circumference of 45mm-55mm distributed on the bottom surface of the grinding cup (2), and the second circle of collision convex points (22) is with a diameter of 2 is a circular ring with a circumference of 95mm-105mm distributed on the bottom surface of the grinding cup (2), and the collision convex point (22) is conical and the protruding distance D8 is 3mm-4mm.

6. The grinding machine according to claim 1, characterized in that: The thickness T1 of the upper blade (5) is 1 mm to 2 mm; the thickness T2 of the lower blade (6) is 1.5 mm to 2.5 mm.

7. The grinding machine according to claim 1, characterized in that: The main machine (1) is provided with a function control module, which is provided with a plurality of food gears, a coarse grinding gear and a fine grinding gear. In different food gears, the function control module controls the grinding knife group (3) to rotate at different rhythms so as to grind the food to a desired degree. The different rhythms are that the grinding knife group (3) is controlled to work in multiple time periods. In different time periods, the grinding knife group (3) rotates at a specific direction, a specific speed, for a specific time, and then pauses for a specific time.

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