The present invention is related to bean grinding machines, and in particular to a bean grinding machine with a quick detachable grinding base.
The prior art bean grinding machine (such as coffee bean grinding machine) serves to grind the beans into particles. The grinding machine thereof mainly includes a grinding disk and a grinding head within the grinding disk. The grinding head is driven by a driving device to rotate, while the grinding disk is un-rotatable. The objects to be ground fall into the gap between the grinding disk and the grinding head. When the grinding head is driven to rotate, the grinding teeth within the grinding disk and the grinding teeth at an outer side of the grinding head will rotate with respect to each other so as to grind the objects into particles.
However, the prior art grinding mechanism has a very sophisticated structure. In that the grinding head installed within the mechanism needs to be precisely vertically aligned with the grinding disk so as to achieve the objective of uniformly grinding. This prior art grinding mechanism is very complicated and need a longer time for calibration of the alignment. If the grinding machine is needed to be cleaned, it is very difficult to detach the grinding head from the structure, as a result, a very long time is necessary for detaching. This is inconvenient and time consumed. Furthermore this complicated structure also increases the overall cost in production.
Therefore, there is an eager demand for a novel grinding machine which has an easily detachable grinding head so as to resolve the defects in the prior art grinding machine.
Accordingly, the object of the present invention is to provide a bean grinding machine with a quick detachable grinding base, wherein the grinding head is detachable from the box body of the grinding disk so that a user can detach the whole grinding head rapidly. It can be cleaned rapidly and another grinding head can be updated. The rapid detachable structure of the present invention has a simple structure with a lower producing cost. Furthermore in the present invention, only the grinding disk is rotatable, while the grinding head does not rotate. The motor and the speed reduction unit are used to drive the grinding disk so as to have greater torque. Two bearings are used to steady the grinding disk as it rotates. As a result, the center of the grinding head and the grinding disk is retained with a precise vertical positioning so that the objects can be ground uniformly.
To achieve above object, the present invention provides a bean grinding machine with a quick detachable grinding base, comprising: a casing; a box body installed within the casing; an upper side the box body having an inlet for receiving external objects to be ground; a lower side of the box body having a lower opening; a grinding disk installed within the box body and between inlet and the lower opening of the box body; the grinding disk being a circular structure with a hollow center portion; an installing unit installed at a lower opening of the box body; and a grinding base installed with a grinding head at an upper end thereof; the grinding head being positioned within the grinding disk; the grinding base being installed with at least one linking unit for linking the installing unit; the at least one linking unit being separably attached to the box body; the grinding base and the grinding head do not rotate; an outer side of the grinding head and an inner side of the grinding disk being installed with grinding teeth; a gap being formed between the grinding teeth of the grinding head and the grinding teeth of the grinding disk; and an upper side of the gap is connected to the inlet.
In order that those skilled in the art can further understand the present invention, a description will be provided in the following in details. However, these descriptions and the appended drawings are only used to cause those skilled in the art to understand the objects, features, and characteristics of the present invention, but not to be used to confine the scope and spirit of the present invention defined in the appended claims.
Referring to
A casing 1 serves for containing other elements of the present invention.
A box body 10 is installed within the casing 1, as illustrated in
A grinding disk 20 is installed within the box body 10 and is between inlet 11 and the lower opening 12 of the box body 10, as shown in
An installing unit 30 is installed at a lower opening 12 of the box body 10, as illustrated in
A grinding base 40 is installed with a grinding head 50 at an upper end thereof. The grinding head 50 is positioned within the grinding disk 20, as shown in
A driving device 60 is connected to the grinding disk 20 for driving the grinding disk 20 to rotate. When the grinding disk 20 rotates, the grinding teeth 25 of the grinding disk 20 rotates around the grinding teeth 25 of the grinding head 50 so that the objects to be ground fall into the gap 13 from the inlet 11 and are ground as particles, then being outputted from a lower side of the gap 13.
In the present invention, the installing unit 30 has a circular structure and the grinding base 40 penetrates through the installing unit 30.
As illustrated in
By above mentioned structure, a user only needs to detach the installing unit 30 from the grinding base 40, then the grinding base 40 with the grinding head 50 can be detached from the box body 10 rapidly. Therefore, the interior of the grinding disk 20 and the grinding base 40 can be cleansed, or different grinding head 50 is replaced. In the present invention, the grinding operation is performed by rotating the grinding disk while the grinding head 50 is motionless. It is only needed to position the grinding disk 20 in the box body 10 precisely and the respective position between the grinding disk 20 and the grinding head 50 are adjusted properly, then the precise vertical positioning of the two can be achieved so that the objects to be ground can be ground uniformly.
An inner diameter of the gap 13 is reduced gradually from upper end to lower end so that the objects to be ground are ground into large particles in the upper side of the gap and then are ground as fine particles at a lower side of the gap.
With reference to
The driving gear set 70 includes a first gear 71, a second gear 72 and a third gear 73. The second gear 72 and third gear 73 are installed to the two gear shafts 19 within the box body 10. The second gear 72 and the third gear 73 all include upper gears 701 and lower gears 72. Outer diameters of the upper gears 701 are smaller than those of the lower gears 702. The spindle 611 of the motor 61 is engaged to the first gear 71. The first gear 71 is engaged with lower gear 702 of the second gear 72. The upper gear 701 of the second gear 72 is engaged to the lower gear 702 of the third gear 73. The upper gear 701 of the third gear 73 is engaged with the outer gear 751 of the circular gear 75.
An upper bearing 15 is installed at the inlet 11 of the box body 10. Interior of the lower opening 12 of the box body 10 is installed with a lower bearing 16. An upper side of the circular gear 75 is installed with a circular frame 76. The circular frame 76 is installed within the upper bearing 15. A lower end of the circular gear 75 is installed with the lower bearing 15. The upper bearing 15 and the lower bearing 16 cause the circular gear 75 and the grinding disk 20 to be positioned steadily. The circular gear 75 has an effect of smooth rotation so that the grinding disk 20 rotates therein steadily.
A center of the circular gear 75 is installed with a central bearing 761 and an upper end of the grinding base 40 is installed with linking shaft 51. The linking shaft 51 extended upwards to penetrate through the grinding head 50. An upper end of the linking shaft 51 is inserted into the central bearing 761.
With reference to
The box body 10 is divided with an upper box 16 and a lower box 18 at a lower side of the upper box 16. The inlet 11 is formed at a frond upper end of the upper box 17 and the lower opening 12 is at a front lower end of the lower box 18.
The grinding head 50 may have different forms. In this example, the grinding head 50 has a tapered shape.
Referring to
With reference to
Advantages of the present invention are that: the grinding head is detachable from the box body of the grinding disk so that a user can detach the whole grinding head rapidly. It can be cleaned rapidly and another grinding head can be updated. The rapid detachable structure of the present invention has a simple structure with a lower producing cost. Furthermore in the present invention, only the grinding disk is rotatable, while the grinding head does not rotate. The motor and the speed reduction unit are used to drive the grinding disk so as to have greater torque. Two bearings are used to steady the grinding disk as it rotates. As a result, the center of the grinding head and the grinding disk is retained with a precise vertical positioning so that the objects can be ground uniformly.
The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
Number | Name | Date | Kind |
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20150157167 | Eicher | Jun 2015 | A1 |
20170112324 | Kaczmarek | Apr 2017 | A1 |
Number | Date | Country |
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WO-2016042324 | Mar 2016 | WO |
Number | Date | Country | |
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20230337858 A1 | Oct 2023 | US |