Coffee grinding device

Abstract

The coffee grinding device comprises a shell, a rotating shaft and a driving motor, a primary grinding head is arranged in an opening in the lower portion of the shell, the rotating shaft is coaxially and rotatably arranged in the shell, a secondary grinding head matched with the primary grinding head is arranged at the lower end of the rotating shaft, the distance between the primary grinding head and the secondary grinding head is adjustable, and the driving motor drives the primary grinding head to rotate. The driving motor is used for driving the rotating shaft to rotate; a first thread is arranged on the circumferential side of the upper end of the rotating shaft in a surrounding mode, and an annular worm gear is rotationally connected to the shell. The defects that the coffee beans are finer after being ground, the contact area of the coffee beans and water is larger, and the taste is bitter are overcome; the thicker the coffee beans are ground, the contact area of the coffee beans and water is reduced, and the taste is not bitter; the device cannot adjust the crushing degree of coffee beans, so that the hobbies of various people cannot be considered. Therefore, the coffee grinding device can adjust the grinding degree of coffee beans so as to give consideration to preferences of more types of people.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee processing, in particular to a coffee grinding device. Background Art

[0002] During the coffee production process, coffee beans need to be ground into powder. Existing coffee grinding equipment not only has low processing efficiency and slow powder output speed, but also has uneven particle size of ground powder, which makes it difficult to meet the needs of industrial production.

[0003] Chinese patent CN217447466U discloses a coffee grinding mechanism, which feeds coffee beans from a feed inlet into a feed chamber and then conveys the coffee beans to a crushing assembly through a feeding assembly, and the crushing assembly crushes the coffee beans and discharges them from a discharge port.

[0004] The applicant discovered the following technical problems when implementing the above technical solution:

[0005] The finer the coffee beans are ground, the larger the area in contact with water, and the bitterer the taste will be; the coarser the coffee beans are ground, the smaller the area in contact with water will be, and the taste will not be so bitter; the device cannot adjust the degree of crushing of the coffee beans, resulting in it being unable to take into account the preferences of many groups of people.

[0006] Therefore, providing a coffee grinding device that can adjust the degree of crushing of coffee beans to take into account the preferences of more types of people is an urgent problem to be solved by the present invention. Utility Model Content

[0007] In view of the above technical problems, the purpose of the utility model is to overcome the problems in the prior art that the finer the coffee beans are ground, the larger the area in contact with water, and the more bitter the taste will be; the coarser the coffee beans are ground, the smaller the area in contact with water will be, and the less bitter the taste will be; the device cannot adjust the degree of crushing of the coffee beans, resulting in it being unable to take into account the preferences of multiple groups of people. Thus, a coffee grinding device that can adjust the degree of crushing of coffee beans to take into account the preferences of more groups of people is provided.

[0008] In order to achieve the above-mentioned purpose, the utility model provides a coffee grinding device, which includes: a shell, a rotating shaft and a driving motor, a mother grinding head is arranged in an opening below the shell, the rotating shaft is coaxially and rotatably arranged in the shell, and a sub-grinding head matched with the mother grinding head is arranged at its lower end, the spacing between the mother grinding head and the sub-grinding head is adjustable, and the driving motor is used to drive the rotating shaft to rotate; a first thread is arranged around the circumference of the upper end of the rotating shaft, an annular worm gear is rotatably connected to the shell, and the annular worm gear is coaxially threadedly assembled with the first threaded part of the upper end of the rotating shaft, the driving motor is arranged on one side of the shell, and its output shaft is provided with a driving worm meshing with the annular worm gear, and a rotating head is arranged at the upper end of the rotating shaft.

[0009] Preferably, the mother grinding head has an hourglass-shaped inner groove, the side walls of which are provided with a plurality of first grinding teeth, the shape of the sub-grinding head is adapted to the hourglass-shaped inner groove, and its outer side walls are provided with a plurality of second grinding teeth adapted to the first grinding teeth.

[0010] Preferably, a feeding anti-blocking thread is coaxially arranged around the part of the rotating shaft located above the sub-grinding head.

[0011] Preferably, the rotating shaft is coaxially provided with an elastic member above the feeding anti-blocking thread, the outer shell is provided with an abutment frame above the elastic member, the rotating shaft body vertically penetrates the abutment frame, one end of the elastic member abuts against the upper surface of the feeding anti-blocking thread, and the other end abuts against the lower surface of the abutment frame.

[0012] Preferably, both ends of the elastic member are respectively arranged in a closed loop, and both ends are rotatably arranged on the lower surface of the abutment frame and the upper surface of the feeding anti-blocking thread.

[0013] Preferably, anti-slip grooves are arranged around the circumference of the rotating head.

[0014] Preferably, a feed pipe is provided on the side wall of the shell and is in communication with the interior thereof, and a feeding funnel is provided at one end of the feed pipe away from the shell.

[0015] According to the above technical scheme, the beneficial effects of the utility model compared with the prior art are as follows: the present application adds coffee beans into the shell, and then starts the driving motor to drive the driving worm to rotate, thereby driving the rotating shaft to rotate through the annular worm gear, so as to grind the coffee beans through the cooperation between the sub-grinding head and the mother grinding head. When it is necessary to adjust the degree of crushing of the coffee beans, the distance between the mother grinding head and the sub-grinding head can be adjusted by twisting the rotating shaft. Specifically, when the driving motor stops moving, the driving worm and the annular worm gear form a self-locking, and rotating the rotating shaft will not drive the annular worm gear to rotate together. At this time, the rotating shaft will be gradually twisted, thereby driving the sub-grinding head to be raised and lowered, and then adjusting the distance between the mother grinding head and the sub-grinding head to adjust the degree of crushing of the coffee beans, so as to take into account the preferences of more people.

[0016] Other features and advantages of the utility model will be described in detail in the subsequent specific implementation mode; and the parts not involved in the utility model are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0018] Figure 1 It is a stereoscopic diagram of a coffee grinding device provided in a preferred embodiment of the present utility model.

[0019] Figure 2 It is a planar cross-sectional view of a coffee grinding device provided in a preferred embodiment of the utility model.

[0020] Figure 3 It is a partial stereoscopic diagram of a coffee grinding device provided in a preferred embodiment of the present utility model.

[0021] Figure 4 It is a partial plan cross-sectional view of a coffee grinding device provided in a preferred embodiment of the utility model.

[0022] Explanation of the reference numerals: 1-housing; 101-mother grinding head; 10101-hourglass-shaped inner groove; 10102-first grinding tooth; 102-abutment frame; 103-feeding pipe; 104-feeding funnel; 2-rotating shaft; 201-sub-grinding head; 20101-second grinding tooth; 202-annular worm gear; 203-first thread; 204-rotating head; 20401-anti-slip groove; 205-feeding anti-blocking thread; 206-elastic member; 3-driving motor; 301-driving worm. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0024] In the description of the embodiments of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, if the terms "first", "second", "third" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, if the terms "horizontal", "vertical", "overhanging" and the like appear, it does not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] Reference Figure 1 and Figure 2 : A coffee grinding device, the device comprises: a shell 1, a rotating shaft 2 and a driving motor 3, a mother grinding head 101 is arranged in an opening below the shell 1, the rotating shaft 2 is coaxially and rotatably arranged in the shell 1, and a sub-grinding head 201 adapted to the mother grinding head 101 is arranged at its lower end, the spacing between the mother grinding head 101 and the sub-grinding head 201 is adjustable, and the driving motor 3 is used to drive the rotating shaft 2 to rotate; a first thread 203 is arranged around the upper end of the rotating shaft 2, an annular worm gear 202 is rotatably connected to the shell 1, the annular worm gear 202 is coaxially threadedly assembled with the first thread 203 part at the upper end of the rotating shaft 2, the driving motor 3 is arranged on one side of the shell 1, and its output shaft is provided with a driving worm 301 meshing with the annular worm gear 202, and a rotating head 204 is arranged at the upper end of the rotating shaft 2.

[0028] The present application adds coffee beans into the shell 1, and then starts the driving motor 3 to drive the driving worm 301 to rotate, thereby driving the rotating shaft 2 to rotate through the annular worm gear 202, so as to grind the coffee beans through the cooperation between the sub-grinding head 201 and the mother grinding head 101. When it is necessary to adjust the degree of crushing of the coffee beans, the distance between the mother grinding head 101 and the sub-grinding head 201 can be adjusted by twisting the rotating shaft 2. Specifically, when the driving motor 3 stops moving, the driving worm 301 and the annular worm gear 202 form a self-locking, and rotating the rotating shaft 2 will not drive the annular worm gear 202 to rotate together. At this time, the rotating shaft 2 will be gradually twisted, thereby driving the sub-grinding head 201 to be raised and lowered, and then adjusting the distance between the mother grinding head 101 and the sub-grinding head 201 to adjust the degree of crushing of the coffee beans, so as to take into account the preferences of more people.

[0029] Reference Figure 3 and Figure 4: The mother grinding head 101 has an hourglass-shaped inner groove 10101, and the side wall of the hourglass-shaped inner groove 10101 is provided with a plurality of first grinding teeth 10102. The shape of the sub-grinding head 201 is adapted to the hourglass-shaped inner groove 10101, and its outer side wall is provided with a plurality of second grinding teeth 20101 adapted to the first grinding teeth 10102.

[0030] The design of the present application can ensure that the sub-grinding head 201 will not separate from the main grinding head 101, and the hourglass-shaped design can fully grind the coffee beans.

[0031] Reference Figure 3 The rotating shaft 2 is coaxially arranged with a feeding anti-blocking thread 205 on the upper part of the sub-grinding head 201.

[0032] The present application uses the feeding anti-blocking thread 205 to squeeze the coffee beans into the gap between the sub-grinding head 201 and the main grinding head 101 for grinding. At the same time, the coffee beans can also be coarsely ground to crush them for better entry, preventing the coffee beans from gathering above the sub-grinding head 201.

[0033] Reference Figure 3 : The rotating shaft 2 is coaxially provided with an elastic member 206 at the part above the feed anti-blocking thread 205, and the outer shell 1 is provided with an abutment frame 102 above the elastic member 206. The rotating shaft 2 body vertically penetrates the abutment frame 102, and one end of the elastic member 206 abuts against the upper surface of the feed anti-blocking thread 205, and the other end abuts against the lower surface of the abutment frame 102.

[0034] In the present application, when the shaft 2 is rotated, the resistance brought by the elastic member 206 will be felt. When the sub-grinding head 201 and the mother grinding head 101 are about to contact, the elastic member 206 is compressed to the limit, and the shaft 2 will not be able to continue to rotate, thereby preventing the sub-grinding head 201 and the mother grinding head 101 from being too close to cause a collision.

[0035] Reference Figure 3 The two ends of the elastic member 206 are respectively arranged in a closed loop, and the two ends thereof are rotatably arranged on the lower surface of the abutment frame 102 and the upper surface of the feeding anti-blocking thread 205.

[0036] This design is adopted in the present application to prevent the openings at both ends of the elastic member 206 from getting stuck with the lower surface of the abutment frame 102 or the upper surface of the feed anti-blocking thread 205 when the shaft 2 rotates, thereby affecting the service life of the device. Therefore, a closed-loop rotation setting is required.

[0037] Reference Figure 3 The rotating head 204 is surrounded by anti-slip grooves 20401.

[0038] The rotating head 204 with the anti-slip groove 20401 of the present application can be adjusted and operated more easily and accurately, thereby improving work efficiency and saving time and energy.

[0039] Reference Figure 4 A feeding pipe 103 is disposed on the side wall of the shell 1 and is connected to the interior thereof. A feeding funnel 104 is disposed on one end of the feeding pipe 103 away from the shell 1 .

[0040] The present application adds coffee beans to the feeding funnel 104 so that the coffee beans enter the interior of the housing 1 along the feeding pipe 103. When the device provided by the present utility model is in use, the present application adds coffee beans to the housing 1, and then starts the driving motor 3 to drive the driving worm 301 to rotate, thereby driving the rotating shaft 2 to rotate through the annular worm gear 202, so that the grinding is performed through the cooperation between the sub-grinding head 201 and the mother grinding head 101. When the degree of crushing of the coffee beans needs to be adjusted, the distance between the mother grinding head 101 and the sub-grinding head 201 can be adjusted by twisting the rotating shaft 2. Specifically, when the driving motor 3 stops moving, the driving worm 301 and the annular worm gear 202 form a self-locking, and rotating the rotating shaft 2 will not drive the annular worm gear 202 to rotate together. At this time, the rotating shaft 2 will be gradually twisted, thereby driving the sub-grinding head 201 to achieve lifting and lowering, and then adjusting the distance between the mother grinding head 101 and the sub-grinding head 201 to achieve the adjustment of the degree of crushing of the coffee beans, which can take into account the preferences of more people.

[0041] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0043] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A coffee grinding device, characterized in that: The device comprises: a housing (1), a rotating shaft (2) and a driving motor (3); a mother grinding head (101) is arranged in an opening below the housing (1); the rotating shaft (2) is coaxially rotatably arranged in the housing (1), and a sub-grinding head (201) matched with the mother grinding head (101) is arranged at its lower end; the distance between the mother grinding head (101) and the sub-grinding head (201) is adjustable; and the driving motor (3) is used to drive the rotating shaft (2) to rotate; The upper end of the rotating shaft (2) is provided with a first thread (203) around its periphery; the outer shell (1) is rotatably connected with an annular worm gear (202); the annular worm gear (202) is coaxially threadedly assembled with the first thread (203) portion of the upper end of the rotating shaft (2); the driving motor (3) is arranged on one side of the outer shell (1); and its output shaft is provided with a driving worm (301) meshing with the annular worm gear (202); and the upper end of the rotating shaft (2) is provided with a rotating head (204).

2. A coffee grinding device according to claim 1, characterized in that: The mother grinding head (101) has an hourglass-shaped inner groove (10101), and the side wall of the hourglass-shaped inner groove (10101) is provided with a plurality of first grinding teeth (10102); the shape of the sub-grinding head (201) is adapted to the hourglass-shaped inner groove (10101), and the outer side wall thereof is provided with a plurality of second grinding teeth (20101) adapted to the first grinding teeth (10102).

3. A coffee grinding device according to claim 1, characterized in that: The rotating shaft (2) is coaxially provided with a feeding anti-blocking thread (205) on the part above the sub-grinding head (201).

4. A coffee grinding device according to claim 3, characterized in that: The rotating shaft (2) is coaxially provided with an elastic member (206) at the part above the feed anti-blocking thread (205); the housing (1) is provided with an abutment frame (102) above the elastic member (206); the rotating shaft (2) body vertically penetrates the abutment frame (102); one end of the elastic member (206) abuts against the upper surface of the feed anti-blocking thread (205), and the other end abuts against the lower surface of the abutment frame (102).

5. A coffee grinding device according to claim 4, characterized in that: The two ends of the elastic member (206) are respectively arranged in a closed loop, and the two ends are rotatably arranged on the lower surface of the abutment frame (102) and the upper surface of the feeding anti-blocking thread (205).

6. The coffee grinding device according to claim 1, characterized in that: The rotating head (204) is provided with anti-slip grooves (20401) around its circumference.

7. The coffee grinding device according to claim 1, characterized in that: A feeding pipe (103) is provided on the side wall of the outer shell (1) and is in communication with the interior thereof. A feeding funnel (104) is provided at one end of the feeding pipe (103) away from the outer shell (1).

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