阅读说明：本技术 一种用于磨豆机防飞粉用的引导件及防飞粉磨豆机 (Guide piece for preventing powder from flying of bean grinder and anti-flying bean grinder ) 是由 黄祖明 罗湘贵 于 2021-08-19 设计创作，主要内容包括：本发明公开了一种用于磨豆机防飞粉用的引导件及防飞粉磨豆机,所述磨豆机包括具有磨豆腔的壳体、与所述壳体的磨豆腔连通的储粉室,所述磨豆腔内设置有磨豆结构；其中,所述储粉室内设置有与所述磨豆腔连接的用于引导飞粉方向的引导件。所述引导件包括与所述磨豆机的飞粉口连通的出粉通道,所述出粉通道包括与飞粉口连接的进粉端、出粉端、以及连接进粉端和所述出粉端的引导腔；其中,所述出粉端相对所述进粉端垂直设置。本发明设置一个与磨豆腔连接的引导件,会把电机旋转离心力和风进行导向和改变,咖啡粉就直接沿所述引导件往下掉下来了,不会直接跑到储粉室的侧壁上去,使咖啡粉有序落粉,不会有咖啡粉掉落到外部,使用起来便加方便。(The invention discloses a guide piece for preventing powder from flying of a bean grinder and the bean grinder, wherein the bean grinder comprises a shell with a bean grinding cavity and a powder storage chamber communicated with the bean grinding cavity of the shell, and a bean grinding structure is arranged in the bean grinding cavity; the powder storage chamber is internally provided with a guide piece which is connected with the bean grinding chamber and used for guiding the direction of flying powder. The guiding piece comprises a powder outlet channel communicated with a powder flying port of the bean grinder, and the powder outlet channel comprises a powder inlet end, a powder outlet end and a guiding cavity, wherein the powder inlet end is connected with the powder flying port, and the guiding cavity is connected with the powder inlet end and the powder outlet end; wherein, the powder outlet end is vertically arranged relative to the powder inlet end. The coffee bean grinder is provided with the guide piece connected with the bean grinding cavity, so that the rotating centrifugal force and the wind of the motor can be guided and changed, coffee powder directly falls down along the guide piece and cannot directly run onto the side wall of the powder storage chamber, the coffee powder is enabled to fall in order, no coffee powder falls outside, and the coffee bean grinder is convenient to use.)

1. A guide piece for preventing flying powder of a bean grinder is characterized in that: the guide piece (121) comprises a powder outlet channel communicated with a powder flying port (111-1) of the bean grinding machine (1), and the powder outlet channel comprises a powder inlet end (121-2) connected with the powder flying port (111-1), a powder outlet end (121-1) and a guide cavity (121-3) connecting the powder inlet end (121-2) and the powder outlet end (121-1); wherein the powder outlet end (121-1) is vertically arranged relative to the powder inlet end (121-2).

2. The guide for preventing dusting of a bean grinder as set forth in claim 1, wherein: the central axis of the guide cavity (121-3) and the central axis of the powder outlet end (121-1) are not on the same straight line, and the central axis of the guide cavity (121-3) is located between the powder inlet end (121-2) and the powder outlet end (121-1).

3. The guide for preventing dusting of a bean grinder as set forth in claim 2, wherein: the two ends of the guide cavity (121-3) are provided with a powder inlet and a powder falling port, the powder inlet extends along the axial direction of the powder inlet towards the direction far away from the guide cavity to form the powder inlet end (121-2), and the powder inlet end (121-2) is formed by at least one plate in a surrounding mode; the powder falling port extends along the axial direction of the powder falling port towards the direction far away from the guide cavity to form the powder outlet end (121-1), and the powder outlet end (121-1) is an annular body.

4. The utility model provides an anti-flying grinding beans machine which characterized in that: the bean grinding machine (1) comprises a shell (11) with a bean grinding cavity (111) and a powder storage chamber (12) communicated with the bean grinding cavity (111) of the shell (11), wherein a bean grinding structure (112) is arranged in the bean grinding cavity (111); the powder storage chamber (12) is internally provided with a guide piece (121) which is connected with the bean grinding chamber (111) and is used for guiding the direction of flying powder.

5. The anti-flying bean grinding machine according to claim 4, characterized in that: the powder flying port (111-1) extends outwards to form a shaft part (111-1a), and a clamping groove (111-1b) is formed between the shaft part (111-1a) and the shell (11); correspondingly, the powder inlet end (121-2) of the guide piece (121) is matched and clamped in the clamping groove (111-1 b).

6. The anti-flying bean grinding machine according to claim 4, characterized in that: the bean grinding structure (112) comprises a fixed grinding wheel (112-1) arranged in a shell (11), a movable grinding wheel (112-2) matched with the fixed grinding wheel (112-1), and a driving piece (112-3) for powering the movable grinding wheel (112-2); wherein, the clearance between the fixed grinding wheel (112-1) and the movable grinding wheel (112-2) is a powder outlet (112-4).

7. The anti-flying bean grinding machine according to claim 6, characterized in that: decide emery wheel (112-1) and keep away from the one end of moving emery wheel (112-2) is connected with into beans spare (113), the upper end that advances beans spare (113) sets up into beans mouth (113-1), and is provided with and is used for the intercommunication advance beans mouth (113-1) with grind cavity (113-2) in beans chamber (111).

8. The anti-flying bean grinding machine according to claim 7, characterized in that: the bean grinding structure (112) further comprises a fixed grinding wheel bracket (112-5) fixed on the shell (11), wherein the fixed grinding wheel bracket (112-5) is provided with an internal thread (112-5a), and correspondingly, the outer periphery of the bean feeding piece (113) is provided with an external thread (113-3) matched with the internal thread (112-5 a); the bean feeding part (113) rotates along the fixed grinding wheel bracket (112-5) to drive the fixed grinding wheel (112-1) to approach or separate from the movable grinding wheel (112-2).

9. The anti-flying bean grinding machine according to claim 7, characterized in that: the shell (11) is internally provided with a first microswitch (114) for detecting the bean feeding piece (113) and a first trigger structure (115) which can move up and down relative to the first microswitch (114).

10. The anti-flying bean grinding machine according to claim 7, characterized in that: one end of the bean feeding piece (113) which is provided with the bean feeding port (113-1) is connected with a conical bean separating device (116).

Technical Field

The invention relates to the technical field of bean mills, in particular to a guide piece for preventing powder from flying of a bean mill and the bean mill.

Background

With the continuous improvement of the living standard and the continuous improvement of the taste of people, many people do not like drinking instant coffee any more, but like buying coffee beans for brewing and drinking after grinding, so that the coffee machine with the bean grinding function can be used. In the bean grinding process, the rotation of the knife grinder can enable the ground coffee powder to generate centrifugal force, so that the coffee powder flies around the powder outlet passage opening in a mess, and the powder flying phenomenon is generated.

Disclosure of Invention

Technical problem to be solved

The technical problem to be solved by the invention is to provide a guide piece for preventing powder from flying of a bean grinder and the bean grinder, wherein the guide piece is connected with a bean grinding cavity, so that the rotating centrifugal force and wind of a motor can be guided and changed, coffee powder directly falls down along the guide piece and cannot directly run onto the side wall of a powder storage chamber, the coffee powder is enabled to fall off orderly, no coffee powder falls outside, and the guide piece and the bean grinder are convenient to use.

(II) technical scheme

The guide piece comprises a powder outlet channel communicated with a powder flying port of the bean grinder, wherein the powder outlet channel comprises a powder inlet end, a powder outlet end and a guide cavity, the powder inlet end is connected with the powder flying port, and the guide cavity is connected with the powder inlet end and the powder outlet end; wherein, the powder outlet end is vertically arranged relative to the powder inlet end.

Furthermore, the central axis of the guide cavity and the central axis of the powder outlet end are not on the same straight line, and the central axis of the guide cavity is located between the powder inlet end and the powder outlet end.

Furthermore, both ends of the guide cavity are provided with a powder inlet and a powder falling port, the powder inlet extends along the axial direction of the powder inlet towards the direction far away from the guide cavity to form the powder inlet end, and the powder inlet end is formed by surrounding at least one plate; the powder falling port extends along the axial direction of the powder falling port towards the direction far away from the guide cavity to form the powder outlet end, and the powder outlet end is an annular body.

Preferably, the powder inlet end can be surrounded by one or more plates with different shapes.

The invention solves the technical problems by adopting the scheme that the anti-flying bean grinding machine comprises a shell with a bean grinding cavity and a powder storage chamber communicated with the bean grinding cavity of the shell, wherein a bean grinding structure is arranged in the bean grinding cavity; the powder storage chamber is internally provided with a guide piece which is connected with the bean grinding chamber and used for guiding the direction of flying powder.

Preferably, the central axis of the powder outlet end of the guide piece is relatively arranged at the center of the powder storage chamber, so that the coffee powder falling from the guide piece cannot directly run onto the side wall of the powder storage chamber, and the effect is better.

Adopt above-mentioned scheme, set up a guiding piece of being connected with the grinding bean chamber, can lead to motor rotation centrifugal force and wind and change, the coffee powder is just directly followed the guiding piece has fallen down, can directly not go on the lateral wall that stores up the powder room, makes the coffee powder fall the powder in order, can not have the coffee powder to drop the outside, and the use is got up and is added convenience.

Further, the bean grinding cavity is provided with a powder flying port connected with the guide piece, and the guide piece is provided with a powder falling port; the powder flying port is arranged on the side wall of the shell, and the powder falling port is vertically arranged relative to the powder outlet.

Furthermore, the powder flying port extends outwards to form a shaft part, and a clamping groove is formed between the shaft part and the shell; correspondingly, the guide piece is provided with a powder inlet end matched with the clamping groove.

By adopting the scheme, the guide piece is detachably connected to the shaft part, so that subsequent cleaning and maintenance are facilitated.

Further, the guide piece comprises a guide cavity communicated with the powder outlet.

Specifically, the coffee powder ground in the bean grinding cavity is driven by centrifugal force to fly out from the powder flying port to enter the guide cavity of the guide piece, and the guide piece guides and changes the rotating centrifugal force and the wind to enable the coffee powder to move downwards and fall along the powder falling port without directly running to the side wall of the powder storage chamber.

Furthermore, the bean grinding structure comprises a fixed grinding wheel arranged in the shell, a movable grinding wheel matched with the fixed grinding wheel and a driving part for powering the movable grinding wheel; wherein, the clearance between the fixed grinding wheel and the movable grinding wheel is a powder outlet.

Preferably, the driving member includes a motor, and the motor rotates to rotate the movable grinding wheel, so that the coffee beans are ground into coffee powder between the fixed grinding wheel and the movable grinding wheel. More preferably, a motor bracket is arranged in the shell and used for mounting the motor; the motor support is provided with a mounting groove, and correspondingly, the shell is provided with a mounting shaft; the installation axle with the cooperation of mounting groove can with motor support firmly fixes on the casing, simultaneously, the follow-up dismantlement and the maintenance of being convenient for.

Preferably, one end of a motor shaft of the motor, which is close to the movable grinding wheel, is connected with a movable grinding wheel support for mounting the movable grinding wheel, and a sealing ring is arranged between the movable grinding wheel support and the movable grinding wheel, so that the sealing property between the movable grinding wheel support and the movable grinding wheel support is improved, and the movable grinding wheel is prevented from being separated from the movable grinding wheel support; wherein the bean grinding cavity is formed among the fixed grinding wheel, the movable grinding wheel and the movable grinding wheel bracket; the shell is provided with a powder flying cavity communicated with the bean grinding cavity, and the powder flying cavity is provided with the powder flying port. Specifically, the bean grinding structure is accommodated in the fly powder cavity.

More preferably, the lower end of the fixed grinding wheel and the upper end of the movable grinding wheel are respectively provided with a plurality of fixed blades and movable blades which are arranged at intervals; wherein the fixed blade extends in a curved shape along an axial direction of the fixed grinding wheel, and the movable blade extends in a curved shape along a circumferential direction of the fine grinding wheel; and the extending direction of the fixed blade is opposite to that of the movable blade, so that coffee beans can be conveniently ground. Specifically, the arrangement of the fixed blade and the movable blade can limit coffee powder to be extruded in a small space, so that static electricity and centrifugal force on the coffee powder are further eliminated, and the powder flying phenomenon of the coffee powder is avoided. More specifically, the fixed blade and the movable blade respectively extend in an arc shape or a spiral line shape along the axial direction of the fixed grinding wheel and the axial direction of the movable grinding wheel, and the fixed blade and the movable blade which are in an arc shape or a spiral line shape are adopted, so that the coffee powder can be extruded, and the powder flying phenomenon of the coffee powder is avoided.

Further, decide the emery wheel and keep away from the one end of moving the emery wheel is connected with into beans spare, the upper end that advances beans spare sets up into the beans mouth, and is provided with and is used for the intercommunication advance the beans mouth with grind the cavity in beans chamber.

Specifically, an opening at the upper end of the fixed grinding wheel is communicated with the cavity, so that coffee beans can enter the bean grinding cavity.

Preferably, the grinding wheel is connected with the bean feeding part in a clamping connection mode, so that subsequent cleaning and maintenance are facilitated.

Preferably, be provided with the pivot portion on the casing, it is corresponding, advance beans spare be provided with the recess that the pivot portion matches, through the pivot portion with the matching of recess makes advance beans spare and install can not take place the swing behind the casing, and the structure is more stable.

Further, the bean grinding structure further comprises a fixed grinding wheel support fixed on the shell, wherein the fixed grinding wheel support is provided with an internal thread, and correspondingly, an external thread matched with the internal thread is arranged on the outer periphery of the bean feeding piece; the bean feeding part rotates along the fixed grinding wheel support to drive the fixed grinding wheel to be close to or far away from the movable grinding wheel.

Preferably, the fixed grinding wheel can move upwards or downwards along the fixed grinding wheel support through the matching of the internal thread and the external thread, so that the purpose of adjusting the fit clearance between the upper grinding wheel and the lower grinding wheel is realized, the fit clearances with different intervals can be adjusted according to different requirements on the coffee powder thickness, the particle size of the ground coffee powder can be adjusted in time through the scheme provided by the invention according to the self preference of a user, and the coffee powder grinding machine is convenient and simple to operate.

Furthermore, a first micro switch used for detecting the bean feeding piece and a first trigger structure capable of moving up and down relative to the first micro switch are arranged in the shell.

Preferably, the first triggering structure comprises a first triggering piece and a first elastic piece connected with the first triggering piece, and after the bean feeding piece is placed in the shell, the first triggering piece is pressed downwards to move downwards until a first triggering end of the first triggering piece contacts the first microswitch, so that whether the bean feeding piece is installed in place or not is detected; when the bean feeding part is moved away, the first elastic part resets to apply an upward force to the first trigger part, so that the first trigger end of the first elastic part is disengaged from the first microswitch. Wherein, the first elastic piece is a spring. More preferably, in order to match with the first triggering structure, the lower end of the pivot pin part is connected with a spring, so that the bean feeding part is more accurately installed.

Furthermore, the bean feeding part is arranged at one end of the bean feeding port and is connected with a conical bean separating device.

Preferably, the bean separating device comprises a conical barrel, the upper end of the conical barrel is open, the lower end of the conical barrel is provided with an opening matched with the bean inlet, and meanwhile, the conical barrel is located at the upper end of the opening and divides the opening into a plurality of partition plates with equally spaced inlets, so that the buffering force of placed coffee beans can be buffered.

Furthermore, the shell is provided with a second microswitch for detecting a powder storage barrel with the powder storage chamber and a second trigger structure which can move up and down relative to the second microswitch.

Preferably, the second trigger structure comprises a second trigger piece and a second elastic piece connected with the second trigger piece, when the powder storage barrel is placed in the housing, the second trigger piece is pressed downwards to move downwards until a second trigger end of the second trigger piece contacts the second microswitch, so as to detect whether the powder storage barrel is installed in place; when the powder storage barrel is moved away, the second elastic piece resets to give two upward forces to the second trigger piece, so that the second trigger end of the second elastic piece is separated from the second microswitch. Wherein, the second elastic component is a spring.

(III) advantageous effects

Compared with the prior art, the invention designs the flying-prevention bean grinding machine,

(1) the guiding piece connected with the bean grinding cavity is arranged, so that the rotating centrifugal force and the wind of the motor can be guided and changed, the coffee powder directly falls down along the guiding piece and cannot directly run onto the side wall of the powder storage chamber, the coffee powder is enabled to fall in order, no coffee powder falls outside, and the coffee powder is convenient to use;

(2) the fixed blade and the movable blade respectively extend in an arc shape or a spiral line shape along the axial direction of the fixed grinding wheel and the movable grinding wheel, and the fixed blade and the movable blade which are in an arc shape or a spiral line shape are adopted, so that coffee powder can be limited in a small space to be extruded, static electricity and centrifugal force on the coffee powder are further eliminated, and the phenomenon of powder flying of the coffee powder is avoided;

(3) the fixed grinding wheel is connected with the fixed grinding wheel support in a threaded manner, so that the fixed grinding wheel can move upwards or downwards along the fixed grinding wheel support, the purpose of adjusting the fit clearance between the upper grinding wheel and the lower grinding wheel is achieved, the fit clearances with different intervals can be adjusted according to different requirements on the coffee powder thickness, the particle size of the ground coffee powder can be adjusted in time through the scheme provided by the invention according to the self preference of a user, and the coffee powder grinding machine is convenient and simple to use and convenient to operate.

Drawings

Fig. 1 is a schematic view of an anti-flying bean grinder according to the present embodiment;

fig. 2 is a schematic view of another angle of the shatter prevention bean grinder of the embodiment;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is an enlarged view of the point B in FIG. 3;

FIG. 5 is an enlarged view of FIG. 3 at C;

fig. 6 is a sectional view of an anti-flying bean grinder of the present embodiment;

fig. 7 is an enlarged schematic view of fig. 6 at D.

Description of reference numerals: 1. grinding the beans; 11. a housing; 111. a bean grinding chamber; 111-1, a powder flying port; 111-1a, a shaft portion; 111-1b, a card slot; 112. grinding the bean structure; 112-1, fixing the grinding wheel; 112-1a, a fixed blade; 112-2, moving grinding wheel; 112-2a, a movable blade; 112-3, a driving piece; 112-3a, a motor bracket; 112-4, a powder outlet; 112-5, fixing the grinding wheel bracket; 112-5a, internal threads; 112-6, moving grinding wheel bracket; 112-7, a sealing ring; 113. a bean feeding part; 113-1, bean inlet; 113-2, a cavity; 113-3, external threads; 113-4, a groove; 114. a first microswitch; 115. a first trigger structure; 115-1, a first trigger; 115-2, a first elastic member; 116. a bean separating device; 116-1, a conical cylinder; 116-2, opening; 116-3, a partition plate; 117. a second microswitch; 118. a second trigger structure; 118-1, a second trigger; 118-2, a second elastic member; 119. a powder flying cavity; 12. a powder storage chamber; 121. a guide; 121-1, a powder outlet end; 121-2, a powder inlet end; 121-3, a guide cavity; 13. a pintle section; 131. a spring.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

as shown in fig. 1-4, the guide for preventing flying powder of a bean grinder of the present embodiment includes a powder outlet channel communicated with a powder flying port 111-1 of the bean grinder 1, wherein the powder outlet channel includes a powder inlet end 121-2 connected with the powder flying port 111-1, a powder outlet end 121-1, and a guide cavity 121-3 connecting the powder inlet end 121-2 and the powder outlet end 121-1; wherein, the powder outlet end 121-1 is vertically arranged relative to the powder inlet end 121-2. Further, the central axis of the guide cavity 121-3 is not collinear with the central axis of the powder outlet end 121-1, and the central axis of the guide cavity 121-3 is located between the powder inlet end 121-2 and the powder outlet end 121-1. Further, both ends of the guide cavity 121-3 are provided with a powder inlet and a powder falling port, the powder inlet extends along the axial direction thereof towards the direction away from the guide cavity to form the powder inlet 121-2, and the powder inlet 121-2 is formed by enclosing four plates which are connected in sequence; the powder outlet 121-1 is formed by extending the powder falling port along the axial direction thereof in the direction away from the guide cavity, and the powder outlet 121-1 is an annular body.

Example two

As shown in fig. 1-4, in the anti-flying bean grinder of the present embodiment, the bean grinder 1 includes a housing 11 having a bean grinding chamber 111, and a powder storage chamber 12 communicated with the bean grinding chamber 111 of the housing 11, wherein a bean grinding structure 112 is disposed in the bean grinding chamber 111; wherein, a guiding member 121 connected with the bean grinding chamber 111 and used for guiding the direction of flying powder is arranged in the powder storage chamber 12. Preferably, the central axis of the powder outlet end 121-1 of the guide member is relatively arranged at the center of the powder storage chamber 12, so that the coffee powder falling from the guide member 121 does not directly run onto the side wall of the powder storage chamber 12, and the effect is better. By adopting the scheme, the guide piece 121 connected with the bean grinding cavity 111 is arranged, the rotating centrifugal force and the wind of the motor can be guided and changed, the coffee powder directly falls down along the guide piece 121 and cannot directly run onto the side wall of the powder storage chamber 12, the coffee powder is enabled to fall in order, no coffee powder falls outside, and the coffee powder is convenient to use. Further, the bean grinding chamber 111 is provided with a powder flying port 111-1 connected with the guide member 121, and the guide member 121 is provided with a powder falling port; the powder flying port 111-1 is arranged on the side wall of the shell 11, and the powder falling port is vertically arranged relative to the powder outlet 112-4. Further, the powder flying port 111-1 extends outwards to form a shaft part 111-1a, and a clamping groove 111-1b is formed between the shaft part 111-1a and the shell 11; correspondingly, the guide part 121 is provided with a powder feeding end 121-2 matched with the clamping groove 111-1 b. With the above arrangement, the guide member 121 is detachably connected to the shaft portion 111-1a, thereby facilitating subsequent cleaning and maintenance. Further, the guide member 121 includes a guide chamber 121-3 communicating with the powder outlet 112-4. Specifically, the coffee powder ground in the bean grinding chamber 111 is driven by the centrifugal force to fly out of the powder flying port 111-1 into the guiding chamber 121-3 of the guiding member 121, and the guiding member 121 guides and changes the rotating centrifugal force and the wind to make the coffee powder fall down along the powder falling port without directly running to the side wall of the powder storage chamber 12.

As shown in fig. 3-4, 6-7, further, the grinding structure 112 includes a fixed grinding wheel 112-1 disposed in the housing 11, a movable grinding wheel 112-2 matching with the fixed grinding wheel 112-1, and a driving member 112-3 for driving the movable grinding wheel 112-2; wherein, the clearance between the fixed grinding wheel 112-1 and the movable grinding wheel 112-2 is a powder outlet 112-4. Preferably, the driving member 112-3 includes a motor, and the motor rotates to rotate the movable grinding wheel 112-2, so that the coffee beans are ground into coffee powder between the fixed grinding wheel 112-1 and the movable grinding wheel 112-2. More preferably, a motor bracket 112-3a is arranged in the housing 11 and used for mounting the motor; the motor support 112-3a is provided with a mounting groove, and correspondingly, the housing 11 is provided with a mounting shaft; the motor support 112-3a can be firmly fixed on the housing 11 by matching the mounting shaft with the mounting groove, and meanwhile, the subsequent disassembly and maintenance are convenient. Preferably, one end of a motor shaft of the motor, which is close to the movable grinding wheel 112-2, is connected with a movable grinding wheel bracket 112-6 for mounting the movable grinding wheel 112-2, and a sealing ring 112-7 is arranged between the movable grinding wheel bracket 112-6 and the movable grinding wheel 112-2, so that the sealing property between the movable grinding wheel bracket 112-6 and the movable grinding wheel bracket 112-2 is improved to prevent the movable grinding wheel 112-2 from being separated from the movable grinding wheel bracket 112-6; wherein the grinding bean chamber 111 is formed among the fixed grinding wheel 112-1, the movable grinding wheel 112-2 and the movable grinding wheel support 112-6; the housing 11 is provided with a flying powder cavity 119 communicated with the bean grinding cavity 111, and the flying powder cavity 119 is provided with the flying powder port 111-1. In particular, the milling structure 112 is housed within the fly ash chamber 119. More preferably, the lower end of the fixed grinding wheel 112-1 and the upper end of the movable grinding wheel 112-2 are respectively provided with a plurality of fixed blades 112-1a and movable blades 112-2a arranged at intervals; wherein the fixed blade 112-1a extends in a curved shape along the axial direction of the fixed grinding wheel 112-1, and the movable blade 112-2a extends in a curved shape along the circumferential direction of the movable grinding wheel 112-2; and the extension direction of the fixed blade 112-1a is opposite to the extension direction of the movable blade 112-2a, so that coffee beans can be conveniently ground. Specifically, the arrangement of the fixed blade 112-1a and the movable blade 112-2a can limit the coffee powder to be extruded in a small space, further eliminate static electricity and centrifugal force on the coffee powder, and avoid the powder flying phenomenon of the coffee powder. More specifically, the fixed blade 112-1a and the movable blade 112-2a extend in an arc shape or a spiral shape along the axial direction of the fixed grinding wheel 112-1 and the movable grinding wheel 112-2, respectively, and the fixed blade 112-1a and the movable blade 112-2a in an arc shape or a spiral shape are adopted, so that the coffee powder can be extruded, and the coffee powder flying phenomenon is avoided.

As shown in fig. 3-4 and 6-7, further, one end of the fixed grinding wheel 112-1, which is far away from the movable grinding wheel 112-2, is connected to a bean feeding member 113, an upper end of the bean feeding member 113 is provided with a bean feeding port 113-1, and a cavity 113-2 for communicating the bean feeding port 113-1 with the bean grinding cavity 111 is provided. Specifically, the upper end opening of the fixed grinding wheel 112-1 is communicated with the cavity 113-2, so that coffee beans can enter the bean grinding cavity 111. Preferably, the fixed grinding wheel 112-1 is connected with the bean feeding member 113 by a snap connection, so as to facilitate subsequent cleaning and maintenance. Preferably, the housing 11 is provided with a pivot pin portion 13, correspondingly, the bean feeding member 113 is provided with a groove 113-4 matched with the pivot pin portion 13, and the bean feeding member 113 cannot swing after being mounted on the housing 11 through matching of the pivot pin portion 13 and the groove 113-4, so that the structure is more stable.

As shown in fig. 3 and 7, further, the grinding structure 112 further includes a fixed grinding wheel support 112-5 fixed on the housing 11, wherein the fixed grinding wheel support 112-5 has an internal thread 112-5a, and correspondingly, an external thread 113-3 matching the internal thread 112-5a is provided on the outer periphery of the bean feeding member 113; the bean feeding part 113 rotates along the fixed grinding wheel bracket 112-5 to drive the fixed grinding wheel 112-1 to approach or separate from the movable grinding wheel 112-2. Preferably, the fixed grinding wheel 112-1 is matched with the external thread 113-3 through the internal thread 112-5a, so that the fixed grinding wheel 112-1 can move upwards or downwards along the fixed grinding wheel support 112-5, and the purpose of adjusting the fit clearance between the upper grinding wheel and the lower grinding wheel is achieved, so that the fit clearance with different intervals can be adjusted according to different requirements on the thickness of the coffee powder, and therefore, the particle size of the ground coffee powder can be adjusted in time through the scheme provided by the invention according to the self-preference of a user, and the fixed grinding wheel is convenient and simple and convenient to operate.

As shown in fig. 1, 3, 5-6, further, a first micro switch 114 for detecting the bean feeding member 113 and a first trigger structure 115 capable of moving up and down relative to the first micro switch 114 are disposed in the housing 11. Preferably, the first trigger structure 115 comprises a first trigger member 115-1 and a first elastic member 115-2 connected to the first trigger member 115-1, when the bean feeding member 113 is placed in the housing 11, the first trigger member 115-1 is pressed downward to move downward until the first trigger end thereof contacts the first microswitch 114, so as to detect whether the bean feeding member 113 is installed in place; when the bean feeding member 113 is removed, the first elastic member 115-2 resets to apply an upward force to the first triggering member 115-1, so that the first triggering end thereof is disengaged from the first microswitch 114. Wherein, the first elastic member 115-2 is a spring. More preferably, in order to match the first trigger structure 115, a spring 131 is connected to the lower end of the pivot pin portion 13, so that the bean feeding member 113 can be more accurately mounted. Further, one end of the bean inlet part 113, which is provided with the bean inlet 113-1, is connected with a tapered bean separating device 116. Preferably, the bean separating device 116 includes a cone-shaped barrel 116-1, the upper end of the cone-shaped barrel is open, the lower end of the cone-shaped barrel is provided with an opening 116-2 which is matched with the bean inlet 113-1, and meanwhile, the cone-shaped barrel is positioned at the upper end of the opening 116-2 to divide the opening 116-2 into a plurality of partition plates 116-3 with equal intervals, so that the impact force of the placed coffee beans can be buffered.

As shown in fig. 6, the housing 11 is further provided with a second microswitch 117 for detecting the powder storage barrel having the powder storage chamber 12, and a second trigger structure 118 which can move up and down relative to the second microswitch 117. Preferably, the second triggering mechanism 118 includes a second triggering member 118-1 and a second elastic member 118-2 connected to the second triggering member 118-1, and when the powder storage barrel is placed in the housing 11, the second triggering member 118-1 is pressed downward to move downward until the second triggering end thereof contacts the second microswitch 117, so as to detect whether the powder storage barrel is installed in place; when the powder storage barrel is removed, the second elastic member 118-2 resets to apply two upward forces to the second triggering member 118-1, so that the second triggering end thereof is disengaged from the second microswitch 117. Wherein the second elastic member 118-2 is a spring.

Two embodiments in contrast to the prior art bean grinder, the guiding member 121 is installed in the powder storage chamber 12 to guide and change the centrifugal force and wind of the rotation of the motor, so that the coffee powder falls down directly along the guiding member 121 and does not go directly to the side wall of the powder storage chamber 12. In practical application, the powder storage chamber 12 is made of transparent material, so that the internal condition can be clearly observed; by contrast, in the bean grinder without the guide member 121, the coffee powder is sprayed onto the sidewall of the powder storage chamber 12, so that the sidewall is substantially filled with the coffee powder and becomes blurred; the bean grinder provided with the guide member 121 does not substantially spray the coffee powder onto the side wall of the powder storage chamber 12, and the inside of the powder storage chamber 12 can be clearly observed.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.