CN113854864B - Portable coffee grinder and coffee grinding method - Google Patents

Abstract

The invention discloses a portable coffee grinder, which comprises a grinding barrel, wherein two ends of the grinding barrel are of an opening structure, the lower end of the grinding barrel is in threaded connection with a receiving cup, the upper end of the grinding barrel is provided with a sliding sleeve in a sliding manner, the upper part of the sliding sleeve is fixedly connected with a baffle ring, a guide sliding component is arranged between the baffle ring and the grinding barrel, the upper end of the grinding barrel and the sliding sleeve are coaxially provided with a fixed disc, a rotating shaft is vertically and fixedly inserted in the middle position of the upper part of the fixed disc, and the lower end of the rotating shaft penetrates through the bottom surface of the fixed disc and extends downwards.

Description

Portable coffee grinder and coffee grinding method

Technical Field

The invention relates to the technical field of coffee grinding, in particular to a portable coffee grinding machine and a coffee grinding method.

Background

Coffee is a beverage made from roasted and ground coffee beans. As one of three beverages in the world, the coffee tree, cocoa and tea are the main beverages popular in the world, the coffee tree belongs to perennial evergreen shrubs or small arbors of Rubiaceae, the daily coffee is made by matching coffee beans with various cooking appliances, the coffee beans are nuts in coffee tree fruits, and the coffee tree fruits are baked by a proper method, so that as people drinking coffee are more and more, a hand-operated portable coffee machine gradually enters the home of people, and people can grind and brew coffee at any time and any place.

However, the existing portable coffee grinder needs to take down the handle and the end cover together during feeding, and then pour a proper amount of coffee beans once again, so that people are inconvenient during feeding, and the handle and the grinding barrel are separated to easily cause loss of a certain part, and meanwhile, the disposable pouring of the coffee beans is not beneficial to grinding thoroughness, so that the portable coffee grinder and the coffee grinding method are provided.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a portable coffee grinder and a coffee grinding method.

The invention provides a portable coffee grinder and a coffee grinding method, which comprises a grinding barrel, wherein two ends of the grinding barrel are of an opening structure, the lower end of the grinding barrel is in threaded connection with a receiving cup, the upper end of the grinding barrel is slidably provided with a sliding sleeve, the upper part of the sliding sleeve is fixedly connected with a baffle ring, a guide sliding component is arranged between the baffle ring and the grinding barrel, the upper end of the grinding barrel and the sliding sleeve are coaxially provided with a fixed disc, a rotating shaft is vertically and fixedly inserted in the middle position of the upper part of the fixed disc, the lower end of the rotating shaft penetrates through the bottom surface of the fixed disc and downwards extends, the lower end of the rotating shaft is inserted and then is in key connection with a grinding mechanism inside the grinding barrel, the upper end of the rotating shaft is rotatably connected with a rocker, one end of the rocker far away from the grinding barrel is rotatably provided with a hand-held rotating column, and a pressing mechanism is arranged between the rocker and the baffle ring.

Preferably, the lower part of the fixed disc is fixedly connected with a plurality of L-shaped columns along one circle of the fixed disc, the other ends of the L-shaped columns are fixedly connected with the inner wall of the grinding barrel, the upper part of the fixed disc is of a conical surface structure, one circle of the lower part of the inner wall of the sliding sleeve is of an inclined surface structure, and an annular feeding channel is formed between one side of the inclined surface after the sliding sleeve moves upwards and the fixed disc.

Preferably, the guiding sliding assembly comprises a guiding column vertically fixed on the lower portion of the baffle ring along a circle of the guiding column, a plurality of round grooves are formed in the upper end of the grinding barrel in a circle, the lower ends of the guiding columns are respectively and slidably inserted into the round grooves, a first spring is vertically and fixedly arranged on the bottom wall of the round grooves, and the upper ends of the first springs are fixedly connected to the lower ends of the guiding columns.

Preferably, the pressing mechanism comprises a sleeve vertically fixedly connected with one side of the lower part of the rocker, a jacking column is inserted at the lower end of the sleeve in a sliding manner, an elastic abutting piece is arranged in the sleeve, a transverse pin is horizontally fixed on the upper part of one side of the jacking column, a roller is rotatably arranged at one end, far away from the jacking column, of the transverse pin, and the roller is in abutting contact with the upper part of the baffle ring.

Preferably, the upper end of the grinding barrel is provided with a ring groove along one circle, the inner bottom surface of the ring groove is divided into a deep groove part and a shallow groove part, and the lower end of the jacking column is slidably arranged in the ring groove.

Preferably, the elastic propping piece comprises a second spring fixedly connected with the top wall inside the sleeve, the lower end of the second spring is fixedly connected with the upper end of the jacking column, and the elastic force of the second spring is larger than that of the first spring.

Preferably, the elastic propping piece comprises a top wall inside the sleeve and magnetic blocks fixedly arranged at the upper end of the jacking column, the two magnetic blocks are magnetically repulsive, and the repulsive force of the two magnetic blocks is larger than the elastic force of the first spring.

A method of grinding a portable coffee grinder, comprising the steps of:

s: holding the grinding barrel and shaking the rocker, detecting whether the rotating shaft rotates normally, distinguishing whether the internal grinding mechanism rotates normally through sound, lifting the rocker up and down, and observing whether the rocker rotates normally along the rotating shaft;

s: the material receiving cup at the part is disassembled, a proper amount of coffee beans are poured into the material receiving cup, and then the coffee beans are poured into the opening in the middle of the sliding sleeve by using the material receiving cup, so that the coffee beans are accommodated between the inner wall of the sliding sleeve and the upper part of the fixed disc;

s: further, the rocking bar is manually rocked to drive the rotating shaft to rotate, the rotating shaft drives the grinding mechanism in the grinding barrel to perform grinding operation, the sliding sleeve slides up and down in the rotating process of the rocking bar, and coffee beans enter the grinding barrel in batches and sequentially;

s: after the whole blanking and grinding of the coffee beans contained in the sliding sleeve are finished, the receiving cup at the detached part is detached again, and whether the ground coffee powder is not completely ground into larger particles or not is observed by using fingers;

s: if larger particles exist, the coffee powder in the receiving cup needs to be poured into the sliding sleeve again, and the coffee powder is fed and ground again until the coffee powder is completely crushed into powder, and finally the coffee powder is taken out and the coffee machine is cleaned.

The beneficial effects of the invention are as follows:

1. through the sliding sleeve that upper end slides in the grinding vessel and the fixed disk that grinding vessel upper end and sliding sleeve coaxial fixed set up for people need not push down the rocker earlier when the feeding, make keep off ring and sliding sleeve move to the top under first spring effect, the coffee beans form an annular feed channel to the inside feeding of grinding vessel by sliding sleeve inclined plane one side and fixed disk this moment between, because feed channel is less, make the feeding slowly, and then begin to grind, push down and rotate the rocker and drive inside grinding mechanism and begin to grind, this device is different from traditional rocker and end cover and grinding vessel disconnect-type grind machine, need not take off rocker and end cover during the feeding, the degree of integration is higher, the operating procedure is simplified, use experience is better.

2. Through the pressing mechanism that sets up between rocker and baffle ring and the deep groove portion and the shallow groove portion that set up respectively in the annular for people shake the rocker and grind the inside coffee beans of barrel, the jack-prop slides along the annular, and the gyro wheel of jack-prop one side rolls along baffle ring upper portion round simultaneously, when the jack-prop slides to shallow groove portion, jack-prop compression second spring relatively moves up, the gyro wheel follows the upward movement, baffle ring and sliding sleeve bullet under first spring effect, annular feed channel forms this moment, the coffee beans inwards drop the feeding, when the jack-prop slides to the deep groove portion, the same reason gyro wheel pushes down baffle ring and sliding sleeve, make annular feed channel close, circulation so, realize intermittent feeding, make coffee beans continuity batch feed, make inside grind more thoroughly, improve grinding effect.

Drawings

Fig. 1 is a schematic perspective view of a portable coffee grinder according to the present invention;

FIG. 2 is a schematic perspective sectional view of a portable coffee grinder according to the present invention;

FIG. 3 is a schematic view of a portable coffee grinder according to the present invention, partially in plan view;

fig. 4 is a schematic view of a rocker structure of a portable coffee grinder according to the present invention;

FIG. 5 is a schematic plan view of a sleeve of an embodiment 1 of a portable coffee grinder according to the present invention;

FIG. 6 is a schematic plan sectional view of a sleeve of embodiment 2 of a portable coffee grinder according to the present invention;

fig. 7 is a schematic view of a grinding process of embodiment 2 of a grinding method of a portable coffee grinder according to the present invention.

In the figure: 1. a grinding barrel; 2. a receiving cup; 3. a rocker; 4. a baffle ring; 5. a rotating shaft; 6. a ring groove; 7. a guide post; 8. an L-shaped column; 9. a fixed plate; 10. a first spring; 11. a sleeve; 12. a transverse pin; 13. a roller; 14. a top column; 15. a sliding sleeve; 16. holding the rotary column; 17. a circular groove; 18. a second spring; 19. a magnetic block.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Example 1

Referring to fig. 1-5, a pneumatic control valve for dental engine system, including grinding barrel 1, grinding barrel 1 both ends are open structure, and grinding barrel 1 lower extreme threaded connection has material receiving cup 2, grinding barrel 1 upper end slip is equipped with sliding sleeve 15, sliding sleeve 15 upper portion fixedly connected with keeps off ring 4, be equipped with direction slip subassembly between keeping off ring 4 and grinding barrel 1, grinding barrel 1 upper end and sliding sleeve 15 coaxial are equipped with fixed disk 9, fixed disk 9 upper portion intermediate position department vertical fixation inserts and is equipped with pivot 5, and pivot 5 lower extreme passes fixed disk 9 bottom surface and downwardly extending, pivot 5 lower extreme insert the back with grinding barrel 1 inside grinding mechanism key connection, pivot 5 upper end rotates and is connected with rocker 3, rocker 3 keeps away from grinding barrel 1 one end and rotates and be equipped with hold rotary column 16, be equipped with pressing mechanism between rocker 3 and the keeping off ring 4.

In the invention, the lower part of a fixed disk 9 is fixedly connected with a plurality of L-shaped columns 8 along one circle thereof, the other ends of the L-shaped columns 8 are fixedly connected with the inner wall of a grinding barrel 1, the upper part of the fixed disk 9 is in a conical surface structure, one circle of the lower part of the inner wall of a sliding sleeve 15 is in an inclined surface structure, an annular feeding channel is formed between one side of the inclined surface of the sliding sleeve 15 after the sliding sleeve 15 moves upwards and the fixed disk 9, a guide sliding component comprises a baffle ring 4, the lower part of the baffle ring is vertically fixed with a guide column 7 along one circle thereof, a plurality of round grooves 17 are formed at the upper end of the grinding barrel 1, the lower ends of the guide columns 7 are respectively and slidably inserted into the round grooves 17, a first spring 10 is vertically and fixedly arranged at the bottom wall of the round grooves 17, the upper ends of the first springs 10 are fixedly connected with the lower ends of the guide columns 7, the pressing mechanism comprises a sleeve 11 which is vertically and fixedly connected with one side of the lower part of the rocker 3, a jacking column 14 is slidably inserted into the lower end of the sleeve 11, an elastic abutting piece is arranged in the sleeve 11, a transverse pin 12 is horizontally fixed on the upper part of one side of the jacking column 14, one end, far away from the jacking column 14, of the transverse pin 12 is rotatably provided with a roller 13, the roller 13 is in abutting contact with the upper part of the baffle ring 4, the upper end of the grinding barrel 1 is provided with a ring groove 6 along a circle of the roller 13, the inner bottom surface of the ring groove 6 is divided into a deep groove part and a shallow groove part, the lower end of the jacking column 14 is slidably arranged in the ring groove 6, the elastic abutting piece comprises a second spring 18 fixedly connected with the top wall of the sleeve 11, the lower end of the second spring 18 is fixedly connected with the upper end of the jacking column 14, and the elasticity of the second spring 18 is larger than that of the first spring 10.

A method of grinding a portable coffee grinder, comprising the steps of:

s1: holding the grinding barrel and shaking the rocker, detecting whether the rotating shaft rotates normally, distinguishing whether the internal grinding mechanism rotates normally through sound, lifting the rocker up and down, and observing whether the rocker rotates normally along the rotating shaft;

s2: the material receiving cup at the part is disassembled, a proper amount of coffee beans are poured into the material receiving cup, and then the coffee beans are poured into the opening in the middle of the sliding sleeve by using the material receiving cup, so that the coffee beans are accommodated between the inner wall of the sliding sleeve and the upper part of the fixed disc;

s3: further, the rocking bar is manually rocked to drive the rotating shaft to rotate, the rotating shaft drives the grinding mechanism in the grinding barrel to perform grinding operation, the sliding sleeve slides up and down in the rotating process of the rocking bar, and coffee beans enter the grinding barrel in batches and sequentially;

s4: after the whole blanking and grinding of the coffee beans contained in the sliding sleeve are finished, the receiving cup at the detached part is detached again, and whether the ground coffee powder is not completely ground into larger particles or not is observed by using fingers;

s5: if larger particles exist, the coffee powder in the receiving cup needs to be poured into the sliding sleeve again, and the coffee powder is fed and ground again until the coffee powder is completely crushed into powder, and finally the coffee powder is taken out and the coffee machine is cleaned.

The working principle of the embodiment is as follows: people do not need to push down rocker 3 earlier when feeding for keep off ring 4 and sliding sleeve 15 move up to the top under first spring 10 effect, at this moment the coffee beans form an annular feed channel by sliding sleeve 15 inclined plane one side and fixed disk 9 between and to the inside feeding of grinding drum 1, because the feed channel is less, make the feeding slowly, and then begin to grind, push down and rotate rocker 3 and drive inside grinding mechanism and begin to grind, this device is different from traditional rocker 3, end cover and grinding drum 1 disconnect-type's grinder, do not need to take off rocker 3 and end cover during feeding, the degree of integration is higher, the operation step is simplified, use experience is better, and when people grind the inside coffee beans of grinding drum 1 at rocking rocker 3, jack-post 14 slides along annular groove 6, simultaneously gyro wheel 13 on one side of jack-post 14 rolls along keep off ring 4 upper portion round, when jack-post 14 slides to shallow groove portion, jack-post 14 compresses second spring 18 and moves up this moment, keep off ring 4 and sliding sleeve 15 begin grinding under first spring 10 effect, this device is different from traditional rocker 3, annular feed channel forms, the coffee beans fall down, the annular feed channel is like this, the effect is realized, the intermittent type is completely, the effect is realized, the inside the coffee beans is completely closed down, the circulation is realized, like the inside the annular channel is completely, when the coffee is closed, the inside is completely, the inside the circulation is realized, and is completely is closed.

Example 2

Referring to fig. 1-4 and 6, a pneumatic control valve for dental engine system, including grinding barrel 1, grinding barrel 1 both ends are open structure, and grinding barrel 1 lower extreme threaded connection has material receiving cup 2, grinding barrel 1 upper end slip is equipped with sliding sleeve 15, sliding sleeve 15 upper portion fixedly connected with keeps off ring 4, be equipped with the direction slip subassembly between keeping off ring 4 and grinding barrel 1, grinding barrel 1 upper end and sliding sleeve 15 coaxial are equipped with fixed disk 9, fixed disk 9 upper portion intermediate position department vertical fixation inserts and is equipped with pivot 5, and pivot 5 lower extreme passes fixed disk 9 bottom surface and downwardly extending, pivot 5 lower extreme insert the back with grinding mechanism key-type connection in grinding barrel 1, pivot 5 upper end rotation is connected with rocker 3, rocker 3 keeps away from grinding barrel 1 one end and rotates and be equipped with hold the revolving post 16, be equipped with pressure mechanism between rocker 3 and the keeping off ring 4.

In the invention, the lower part of a fixed disk 9 is fixedly connected with a plurality of L-shaped columns 8 along one circle thereof, the other ends of the L-shaped columns 8 are fixedly connected with the inner wall of a grinding barrel 1, the upper part of the fixed disk 9 is in a conical surface structure, one circle of the lower part of the inner wall of a sliding sleeve 15 is in an inclined surface structure, an annular feeding channel is formed between one side of the inclined surface of the sliding sleeve 15 after the sliding sleeve 15 moves upwards and the fixed disk 9, a guide sliding component comprises a baffle ring 4, the lower part of the baffle ring is vertically fixed with a guide column 7 along one circle thereof, a plurality of round grooves 17 are formed at the upper end of the grinding barrel 1, the lower ends of the guide columns 7 are respectively and slidably inserted into the round grooves 17, a first spring 10 is vertically and fixedly arranged at the bottom wall of the round grooves 17, the upper ends of the first springs 10 are fixedly connected with the lower ends of the guide columns 7, the pressing mechanism comprises a sleeve 11 vertically and fixedly connected with one side of the lower part of a rocker 3, a jacking column 14 is slidably inserted into the lower end of the sleeve 11, an elastic abutting piece is arranged in the sleeve 11, a transverse pin 12 is horizontally fixed on the upper part of one side of the jacking column 14, one end, far away from the jacking column 14, of the transverse pin 12 is rotatably provided with a roller 13, the roller 13 is in abutting contact with the upper part of a baffle ring 4, a ring groove 6 is formed in the upper end of the grinding barrel 1 along a circle of the upper end, the inner bottom surface of the ring groove 6 is divided into a deep groove part and a shallow groove part, the lower end of the jacking column 14 is slidably arranged in the ring groove 6, the elastic abutting piece comprises a top wall inside the sleeve 11 and magnetic blocks 19 fixedly arranged at the upper end of the jacking column 14, the two magnetic blocks 19 are magnetically repulsive, and the repulsive force of the two magnetic blocks 19 is larger than the elastic force of a first spring 10.

A method of grinding a portable coffee grinder, comprising the steps of:

s1: holding the grinding barrel and shaking the rocker, detecting whether the rotating shaft rotates normally, distinguishing whether the internal grinding mechanism rotates normally through sound, lifting the rocker up and down, and observing whether the rocker rotates normally along the rotating shaft;

s2: the material receiving cup at the part is disassembled, a proper amount of coffee beans are poured into the material receiving cup, and then the coffee beans are poured into the opening in the middle of the sliding sleeve by using the material receiving cup, so that the coffee beans are accommodated between the inner wall of the sliding sleeve and the upper part of the fixed disc;

s3: further, the rocking bar is manually rocked to drive the rotating shaft to rotate, the rotating shaft drives the grinding mechanism in the grinding barrel to perform grinding operation, the sliding sleeve slides up and down in the rotating process of the rocking bar, and coffee beans enter the grinding barrel in batches and sequentially;

s4: after the whole blanking and grinding of the coffee beans contained in the sliding sleeve are finished, the receiving cup at the detached part is detached again, and whether the ground coffee powder is not completely ground into larger particles or not is observed by using fingers;

s5: if larger particles exist, the coffee powder in the receiving cup needs to be poured into the sliding sleeve again, and the coffee powder is fed and ground again until the coffee powder is completely crushed into powder, and finally the coffee powder is taken out and the coffee machine is cleaned.

The working principle of the embodiment is as follows: people do not need to push down rocker 3 earlier when feeding for keep off ring 4 and sliding sleeve 15 move up to the top under first spring 10 effect, at this moment the coffee beans form a ring feed channel to the inside feeding of grinding drum 1 by sliding sleeve 15 inclined plane one side and fixed disk 9 between, because the feed channel is less, make the feeding slow, and then begin to grind, push down and rotate rocker 3 and drive inside grinding mechanism and begin to grind, this device is different from traditional rocker 3, end cover and grinding drum 1 disconnect-type's grinder, do not need to take off rocker 3 and end cover during feeding, the degree of integration is higher, the operation step is simplified, use experience is better, and when people grind the inside coffee beans of grinding drum 1 at rocking rocker 3, jack-prop 14 slides along annular groove 6, simultaneously gyro wheel 13 on one side of jack-prop 14 rolls along keep off ring 4 upper portion round, when jack-prop 14 slides to shallow groove portion, jack-prop 14 compresses two magnetic blocks 19 and moves up relatively, gyro wheel 13 follows and moves up, keep off ring 4 and sliding sleeve 15 and first spring 10 effect is on under traditional rocker 3, the effect, the annular feed channel is simplified, the use is simplified, use is better, use experience is better, make the coffee beans roll down, the inside circulation channel is realized, the intermittent type is completely, when the coffee is completely closed, the inside circulation is realized, the inside the feed channel is completely, like the circulation is completely is closed, when the inside the coffee is realized, the inside the circulation channel is completely, and the inside is closed.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (6)

1. The utility model provides a portable coffee grinds machine, includes grinding drum (1), its characterized in that, grinding drum (1) both ends are open structure, and grinding drum (1) lower extreme threaded connection has material receiving cup (2), grinding drum (1) upper end slip is equipped with sliding sleeve (15), and sliding sleeve (15) upper portion fixedly connected with keeps off ring (4), is equipped with direction slip subassembly between keeping off ring (4) and grinding drum (1), grinding drum (1) upper end and sliding sleeve (15) coaxial are equipped with fixed disk (9), and fixed disk (9) upper portion intermediate position department vertical fixation inserts and is equipped with pivot (5), and pivot (5) lower extreme pass fixed disk (9) bottom surface and downwardly extending, pivot (5) lower extreme insert the back with grinding drum (1) inside grinding mechanism key-type connection, pivot (5) upper end rotation is connected with rocker (3), and rocker (3) are kept away from grinding drum (1) one end rotation and are equipped with hand-hold swivel post (16), be equipped with between rocker (3) and the fender ring (4), direction slip subassembly includes that keeps off ring (4) lower part has fixed disk (7) to insert one guide ring (17) along its vertical guide post (7) vertical direction round post (17) and insert one and have one to locate in the fixed round post (17) respectively, the circular groove (17) diapire vertical fixation is equipped with first spring (10), and first spring (10) upper end fixed connection is in guide post (7) lower extreme, press actuating mechanism including rocker (3) lower part one side vertical fixation's sleeve (11), sleeve (11) lower extreme slip is inserted and is equipped with jack-up post (14), is equipped with elasticity in sleeve (11) and supports tight piece, and jack-up post (14) one side upper portion level is fixed with horizontal round pin (12), and horizontal round pin (12) are kept away from jack-up post (14) one end rotation and are equipped with gyro wheel (13), gyro wheel (13) and keep off ring (4) upper portion and support tight contact.

2. A portable coffee grinder according to claim 1, wherein the lower part of the fixed disc (9) is fixedly connected with a plurality of L-shaped columns (8) along one circle thereof, the other ends of the L-shaped columns (8) are fixedly connected to the inner wall of the grinding barrel (1), the upper part of the fixed disc (9) is in a conical surface structure, one circle of the lower part of the inner wall of the sliding sleeve (15) is in an inclined surface structure, and an annular feeding channel is formed between one side of the inclined surface after the sliding sleeve (15) moves upwards and the fixed disc (9).

3. A portable coffee grinder according to claim 2, wherein the upper end of the grinding barrel (1) is provided with a ring groove (6) along one circle thereof, the inner bottom surface of the ring groove (6) is divided into a deep groove part and a shallow groove part, and the lower end of the top column (14) is slidably arranged in the ring groove (6).

4. A portable coffee grinder according to claim 3, wherein the elastic abutting member comprises a second spring (18) fixedly connected to the inner top wall of the sleeve (11), the lower end of the second spring (18) is fixedly connected to the upper end of the top column (14), and the elastic force of the second spring (18) is greater than that of the first spring (10).

5. A portable coffee grinder according to claim 3, wherein the elastic abutting member comprises a top wall inside the sleeve (11) and magnetic blocks (19) fixedly arranged at the upper ends of the jacking posts (14), the two magnetic blocks (19) are magnetically repulsive, and the repulsive force of the two magnetic blocks (19) is larger than the elastic force of the first spring (10).

6. A method of grinding a portable coffee grinder according to claim 3, comprising the steps of:

s1: holding the grinding barrel and shaking the rocker, detecting whether the rotating shaft rotates normally, distinguishing whether the internal grinding mechanism rotates normally through sound, lifting the rocker up and down, and observing whether the rocker rotates normally along the rotating shaft;

s2: the material receiving cup at the part is disassembled, a proper amount of coffee beans are poured into the material receiving cup, and then the coffee beans are poured into the opening in the middle of the sliding sleeve by using the material receiving cup, so that the coffee beans are accommodated between the inner wall of the sliding sleeve and the upper part of the fixed disc;

s3: further, the rocking bar is manually rocked to drive the rotating shaft to rotate, the rotating shaft drives the grinding mechanism in the grinding barrel to perform grinding operation, the sliding sleeve slides up and down in the rotating process of the rocking bar, and coffee beans enter the grinding barrel in batches and sequentially;

s4: after the whole blanking and grinding of the coffee beans contained in the sliding sleeve are finished, the receiving cup at the detached part is detached again, and whether the ground coffee powder is not completely ground into larger particles or not is observed by using fingers;

s5: if larger particles exist, the coffee powder in the receiving cup needs to be poured into the sliding sleeve again, and the coffee powder is fed and ground again until the coffee powder is completely crushed into powder, and finally the coffee powder is taken out and the coffee machine is cleaned.