Powder pressing equipment and powder pressing method

Abstract

The invention discloses powder pressing equipment and a powder pressing method.The powder pressing method comprises the following steps that when a first powder pressing gear is started, a powder pressing wheel rotates at a first moving position at a first rotating speed in the first direction for a first preset time, and the powder pressing wheel rotates at a second moving position at a second rotating speed in the first direction; the coffee powder which is intensively placed in the powder receiving container is pressed and swung to be flat; the stirring gear is started, the powder pressing wheel rotates for a second preset time in the second direction at a second rotating speed at the first moving position, and due to the fact that the density of the compressed coffee powder is large, and the compressed coffee powder has certain elasticity, after the powder pressing wheel is removed, the compressed coffee powder can generate certain expansion; and the powder pressing wheel pushes the coffee powder to move to other positions in the powder receiving container in the second direction, so that the coffee powder is pushed to other positions in the powder receiving container, the coffee powder in the concentrated position in the powder receiving container is prevented from being repeatedly pressed, and the effect of uniformly distributing the coffee powder in the powder receiving container is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of coffee making processes, and particularly to a powder pressing device and a powder pressing method. Background Art

[0002] In the field of coffee grinders and powder presses, automatic grinding and powder pressing systems driven by motors are increasingly used due to their simple operation. In the prior art, such products generally include a grinder, a powder press, and a powder receiving container. The grinder grinds coffee beans into coffee powder, which flows into the powder receiving container, and the powder press compresses the coffee powder in the powder receiving container.

[0003] However, the coffee powder compacted by the powder press is unevenly distributed in the powder receiving container; when the coffee powder is unevenly distributed, water will flow through the path with less resistance, forming "channels", resulting in the water flow being concentrated in certain areas, while the coffee powder in other areas cannot be fully extracted. This uneven extraction will cause the coffee to taste sour or bitter, affecting the overall taste. Summary of the Invention

[0004] The purpose of the present invention is to improve the problem that the existing powder pressing method will cause uneven distribution of coffee powder in the powder receiving container, and to provide a powder pressing device and a powder pressing method.

[0005] The technical solutions to achieve the above purpose include the following:

[0006] A powder pressing method for a powder pressing device, the powder pressing device having a first powder pressing gear and a stirring gear, the powder pressing device having a powder receiving container and a rotatable powder pressing wheel, the powder pressing wheel being arranged in the powder receiving container, and the powder pressing wheel having at least a first moving position and a second moving position;

[0007] The powder pressing method includes the following steps:

[0008] Step 1: Start the first powder pressing gear, and control the powder pressing wheel to rotate at a first speed in a first direction for a first preset time at the first moving position;

[0009] Step 2: Start the stirring gear, and control the powder pressing wheel to rotate at a second speed in a second direction for a second preset time at the first moving position;

[0010] Step 3: Start the first powder pressing gear again until the powder pressing wheel moves from the first moving position to the second moving position;

[0011] The first speed of the powder pressing wheel is greater than the second speed of the powder pressing wheel.

[0012] In one embodiment, the powder pressing wheel has a powder pressing surface and a pushing surface. When the powder pressing wheel rotates in the first direction, the powder pressing surface of the powder pressing wheel contacts the coffee powder in the powder receiving container;

[0013] When the powder pressing wheel rotates in the second direction, both the powder pressing surface and the pushing surface of the powder pressing wheel are in contact with the coffee powder in the powder receiving container.

[0014] In one embodiment, the powder pressing device further has a second powder pressing gear. Before restarting the first powder pressing gear, the second powder pressing gear is started, and the powder pressing wheel is controlled to rotate at a third rotational speed in the first moving position and along the first direction;

[0015] The first rotational speed of the powder pressing wheel is greater than the third rotational speed of the powder pressing wheel.

[0016] In one embodiment, the powder pressing device forms a single powder pressing cycle period under the operations of the first powder pressing gear, the stirring gear, the second powder pressing gear, and the first powder pressing gear in sequence;

[0017] The powder pressing device further has a photoelectric switch, and the powder pressing wheel further has a third moving position. After the powder pressing device goes through multiple powder pressing cycle periods until the powder pressing wheel moves to the third moving position and triggers the photoelectric switch, the powder pressing wheel is controlled to stop operating.

[0018] In one embodiment, both the first preset time and the second preset time are 4.50 to 6.55 seconds; in the second powder pressing gear, the running time of the powder pressing wheel is 3.55 to 4.50 seconds;

[0019] The gear interval time between the first powder pressing gear and the stirring gear, between the stirring gear and the second powder pressing gear, and between the second powder pressing gear and the first powder pressing gear is less than 1 second.

[0020] In one embodiment, in the first powder pressing gear, a pushing mode and a powder pressing mode are further provided, and the rotational speed in the pushing mode is less than the rotational speed in the powder pressing mode.

[0021] The present invention also provides a powder pressing device, including a grinder, a housing, and a powder press. The powder press has a driving component, a powder pressing wheel, a powder pressing shaft, and a powder receiving container. The grinder is installed at the upper end of the housing, the driving component is installed at the lower end of the housing, the powder pressing wheel is installed at the first end of the powder pressing shaft, the second end of the powder pressing shaft is installed on the output end of the driving component, and a control terminal. The powder pressing method as described above runs on the control terminal;

[0022] The powder receiving container is detachably fitted with the housing. The powder pressing wheel is located in the powder receiving container, and the powder receiving container is communicated with the grinder.

[0023] In one embodiment, the powder pressing wheel has a powder pressing surface and a pushing surface. The powder pressing surface is located at the bottom of the powder pressing wheel, and the pushing surface is located on the side wall of the powder pressing wheel. The powder pressing surface and the pushing surface are provided at the same end of the powder pressing wheel, and the powder pressing surface is adjacent to the pushing surface.

[0024] In one embodiment, the powder pressing wheel includes a connecting body and at least two wheel bodies. The two wheel bodies are installed on the outer wall of the connecting body, and the connecting body is installed at the first end of the powder pressing shaft.

[0025] Each wheel body includes a powder pressing end and an avoidance end. The powder pressing end of one wheel body is close to the avoidance end of another wheel body, and there is a gap between the powder pressing end and the avoidance end.

[0026] On the powder pressing end, the bottom of the wheel body forms the powder pressing surface, and the side wall of the wheel body forms the pushing surface.

[0027] The wheel body is in an inclined plate-like structure. The avoidance end is located at the highest point of the wheel body, the powder pressing end is located at the lowest point of the wheel body, the bottom of the wheel body is concave, and the bottom of the wheel body has an arc surface.

[0028] In one embodiment, the powder pressing device further has a photoelectric switch. The photoelectric switch is installed in the housing. The photoelectric switch includes a transmitting element and a receiving element. The outer wall of the powder pressing shaft has a light passing groove, and the light passing groove extends along the circumferential direction of the powder pressing shaft.

[0029] The transmitting element has a signal light ray, and the light passing groove allows the signal light ray to pass through so that the receiving element can obtain the signal light ray.

[0030] The technical solution provided by the present invention has the following advantages and effects:

[0031] When the powder pressing device starts the first powder pressing gear, the powder pressing wheel rotates at the first rotation speed in the first moving position and along the first direction, pushing the coffee powder centrally placed in the powder receiving container to other positions in the powder receiving container, and pressing and leveling the coffee powder centrally placed in the powder receiving container; when starting the stirring gear, the powder pressing wheel rotates at the second rotation speed in the first moving position and along the second direction. Since the density of the coffee powder is high after being pressed and the pressed coffee powder has a certain elasticity, when the powder pressing wheel is removed, the pressed coffee powder will expand to a certain extent. The powder pressing wheel will push the coffee powder to move to other positions in the powder receiving container in the second direction, so that the coffee powder is pushed to the remaining positions in the powder receiving container, avoiding the repeated pressing of the coffee powder at the central position in the powder receiving container. In this way, the uniform distribution effect of the coffee powder in the powder receiving container can be achieved; then start the first powder pressing gear again. Since the coffee powder in the powder receiving container is evenly distributed, the coffee powder in the powder receiving container is pressed by the powder pressing wheel, and the powder pressing wheel moves from the first moving position to the second moving position, realizing the uniform pressing of the coffee powder in the powder receiving container and avoiding the channel effect of the coffee powder during subsequent brewing. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings here show specific examples of the technical solutions of the present invention and form a part of the specification together with the specific embodiments, and are used to explain the technical solutions, principles and effects of the present invention.

[0033] Unless otherwise specified or defined, in different drawings, the same reference numerals represent the same or similar technical features. For the same or similar technical features, different reference numerals may also be used for representation.

[0034] Figure 1 is a schematic flow chart of the powder pressing method in an embodiment of the present invention;

[0035] Figure 2 is a schematic diagram of the powder pressing device in an embodiment of the present invention;

[0036] Figure 3 is a schematic diagram of the powder pressing wheel pressing powder in an embodiment of the present invention;

[0037] Figure 4 is a schematic diagram of the photoelectric switch in an embodiment of the present invention;

[0038] Figure 5 is a schematic structure diagram of the powder pressing wheel in an embodiment of the present invention Figure 1 ;

[0039] Figure 6 is a schematic structure diagram of the powder pressing wheel in an embodiment of the present invention Figure 2 ;

[0040] Figure 7 is a schematic connection diagram of the driving component and the powder pressing wheel in an embodiment of the present invention;

[0041] Description of reference numerals:

[0042] 100. Powder pressing equipment; 1. Grinder; 11. Powder receiving pipeline; 2. Powder pressing device; 21. Powder pressing wheel; 211. Wheel body; 2111. Avoidance end; 2112. Powder pressing end; 2113. Pushing surface; 2114. Gap; 2115. Powder pressing surface; 212. Connecting body; 22. Driving assembly; 221. Driving member; 2211. Output end; 222. Driving wheel; 223. Transmission shaft; 224. First transmission wheel; 225. Second transmission wheel; 23. Powder pressing shaft; 231. Third transmission wheel; 232. Light-through slot; 24. Photoelectric switch; 241. Transmitting element; 242. Receiving element; 3. Powder receiving container; 31. Powder receiving chamber; 4. Coffee powder; 5. Casing. DETAILED DESCRIPTION

[0043] In order to facilitate the understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0044] Unless otherwise specified or defined, the "first, second..." used in this article is merely used to distinguish names and does not represent a specific quantity or order.

[0045] Unless specifically stated or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0046] It should be noted that when a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there can be a central component; when an component is considered to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time; when an component is considered to be "installed on" another component, it can be directly installed on the other component or there can be a central component at the same time. When an component is considered to be "set on" another component, it can be directly set on the other component or there can be a central component at the same time.

[0047] Through research by the inventor, it is found that: during the powder pressing process, since the coffee powder 4 flows into the powder receiving container 3 in a directional and fixed-point manner, the position where the coffee powder 4 flows into the powder receiving container 3 is relatively concentrated. When the powder pressing wheel 21 of the powder pressing device 100 squeezes the coffee powder 4, it will push the coffee powder 4 at the concentrated point to other positions of the powder receiving container 3. The coffee powder 4 concentratedly placed in the powder receiving container 3 will be first compacted by the powder pressing wheel 21, while the coffee powder 4 at the remaining positions in the powder receiving container 3 can only be compacted when it accumulates to a certain thickness. Therefore, the coffee powder 4 concentratedly placed in the powder receiving container 3 will be continuously squeezed by the powder pressing wheel 21, resulting in a relatively large density of the concentratedly placed coffee powder 4, while the coffee powder 4 at the remaining positions in the powder receiving container 3 has a relatively small density, thus causing the coffee powder 4 in the powder receiving container 3 to be unevenly distributed after being compacted, and generating a channel effect during the subsequent extraction of the coffee powder 4.

[0048] For this reason, the present invention proposes a powder pressing method for a powder pressing device 100. As Figures 1 to 7 shown, the powder pressing device 100 has a first powder pressing gear and a stirring gear. The powder pressing device 100 has a powder receiving container 3 and a rotatable powder pressing wheel 21. The powder pressing wheel 21 is arranged in the powder receiving container 3, and the powder pressing wheel 21 has at least a first moving position and a second moving position;

[0049] The powder pressing method includes the following steps:

[0050] Step 1: Start the first powder pressing gear. The powder pressing wheel 21 rotates at a first rotational speed in the first moving position and rotates in the first direction for a first preset time;

[0051] Step 2: Start the stirring gear. The powder pressing wheel 21 rotates at a second rotational speed in the first moving position and rotates in the second direction for a second preset time;

[0052] Step 3: Start the first powder pressing gear again until the powder pressing wheel 21 moves from the first moving position to the second moving position;

[0053] The first rotational speed of the powder pressing wheel 21 is greater than the second rotational speed of the powder pressing wheel 21.

[0054] Specifically, when the powder pressing device 100 starts the first powder pressing gear, the powder pressing wheel 21 rotates at the first rotation speed in the first moving position and along the first direction, pushing the coffee powder 4 centrally placed in the powder receiving container 3 to other positions of the powder receiving container 3, and pressing and leveling the coffee powder 4 centrally placed in the powder receiving container 3; when starting the stirring gear, the powder pressing wheel 21 rotates at the second rotation speed in the first moving position and along the second direction. Since the density of the coffee powder 4 is high after being pressed, the pressed coffee powder 4 has a certain elasticity. When the powder pressing wheel 21 is removed, the pressed coffee powder 4 will expand to a certain extent. The powder pressing wheel 21 will push the coffee powder 4 to move to other positions in the powder receiving container 3 in the second direction, so that the coffee powder 4 is pushed to the remaining positions of the powder receiving container 3, avoiding the coffee powder 4 at the central position in the powder receiving container 3 from being repeatedly pressed, thus achieving the uniform distribution effect of the coffee powder 4 in the powder receiving container 3; then start the first powder pressing gear again. Since the coffee powder 4 in the powder receiving container 3 is evenly distributed, the coffee powder 4 in the powder receiving container 3 is pressed by the powder pressing wheel 21 until the powder pressing wheel 21 moves from the first moving position to the second moving position, realizing that the coffee powder 4 in the powder receiving container 3 is evenly pressed, and avoiding the channel effect of the coffee powder 4 during subsequent brewing.

[0055] Furthermore, the first rotation speed of the powder pressing wheel 21 is greater than the second rotation speed of the powder pressing wheel 21. The rotation speed of the powder pressing wheel 21 in the first direction is relatively fast. The powder pressing wheel 21 acts on the coffee powder 4 in the powder receiving container 3 at a high speed and high frequency, so that the coffee powder 4 is pressed. While the rotation speed of the powder pressing wheel 21 in the second direction is relatively slow, and the powder pressing wheel 21 has the function of pushing the coffee powder 4, pushing the coffee powder 4 at the central position to the remaining positions of the powder receiving container 3, achieving the effect of uniform distribution of the coffee powder 4 in the powder receiving container 3. In this embodiment, the first direction is the clockwise direction and the second direction is the counterclockwise direction.

[0056] Preferably, the powder pressing wheel 21 has a powder pressing surface 2115 and a pushing surface 2113. When the powder pressing wheel 21 rotates in the first direction, the powder pressing surface 2115 of the powder pressing wheel 21 contacts the coffee powder 4 in the powder receiving container 3; when the powder pressing wheel 21 rotates in the second direction, both the powder pressing surface 2115 and the pushing surface 2113 of the powder pressing wheel 21 contact the coffee powder 4 in the powder receiving container 3. Specifically, the powder pressing wheel 21 has different effects when rotating at different speeds in different directions. Therefore, only by controlling the rotation direction of the powder pressing wheel 21 and the rotation speed in different directions, the powder pressing wheel 21 can press the coffee powder 4 or stir the coffee powder 4. Moreover, there is no technical difficulty in operating the rotation direction of the powder pressing wheel 21. Therefore, this powder pressing method is very convenient to operate.

[0057] It should be noted that when the powder pressing wheel 21 rotates in the first direction, the powder pressing surface 2115 of the powder pressing wheel 21 has a pressing effect, and its pushing surface 2113 cannot directly act on the coffee powder 4; when the powder pressing wheel 21 rotates in the second direction, the powder pressing surface 2115 of the powder pressing wheel 21 does not have a pressing effect, and its pushing surface 2113 directly acts on the coffee powder 4, having the effect of shaving off the protruding coffee powder 4.

[0058] Preferably, the powder pressing device 100 further has a second powder pressing gear. After the stirring gear of the powder pressing device 100 ends, the second powder pressing gear is started. The powder pressing wheel 21 rotates in the first direction at a third rotational speed at the first moving position, and the coffee powder 4 on the powder pressing wheel 21 drops into the powder receiving container 3; the first powder pressing gear is started again; the first rotational speed of the powder pressing wheel 21 is greater than the third rotational speed of the powder pressing wheel 21.

[0059] Specifically, when the powder pressing device 100 stirs the coffee powder 4 in the powder receiving container 3 through the stirring gear, since the second rotational speed of the powder pressing wheel 21 in the stirring gear is relatively low, therefore, during the stirring process of the powder pressing wheel 21, a part of the coffee powder 4 will adhere to the powder pressing wheel 21. For this reason, the powder pressing device 100 further has a second powder pressing gear. By starting the second powder pressing gear, the powder pressing wheel 21 rotates in the first direction at a third rotational speed at the first moving position, so that the coffee powder 4 on the powder pressing wheel 21 drops into the powder receiving container 3. The first rotational speed of the powder pressing wheel 21 is greater than the third rotational speed of the powder pressing wheel 21. In the state of the third rotational speed, the powder pressing wheel 21 can evenly throw off the coffee powder 4 on the powder pressing wheel 21 into the powder receiving container 3. Then, the powder pressing device 100 starts the first powder pressing gear again to realize the powder pressing wheel 21 pressing the evenly distributed coffee powder 4 tightly.

[0060] Preferably, the powder pressing device 100 forms a single powder pressing cycle period under the operations of the first powder pressing gear, the stirring gear, the second powder pressing gear, and the first powder pressing gear in sequence; within the single powder pressing cycle period, the powder pressing wheel 21 tightly presses the coffee powder 4 in the powder receiving container 3 evenly. Within the single powder pressing cycle period, since the coffee powder 4 in the powder receiving container 3 has a certain thickness after being pressed tightly, the coffee powder 4 will push the powder pressing wheel 21 to move from the first moving position to the second moving position after being pressed tightly.

[0061] Further, the powder pressing device 100 further includes a photoelectric switch 24, and the powder pressing wheel 21 further has a third moving position. After the powder pressing device 100 undergoes multiple powder pressing cycle periods until the powder pressing wheel 21 moves to the third moving position and triggers the photoelectric switch 24, the photoelectric switch 24 controls the powder pressing wheel 21 to stop operating. Specifically, after the powder pressing device 100 undergoes multiple powder pressing cycle periods, the powder pressing wheel 21 moves to the third moving position and triggers or activates the induction switch 4; when the powder pressing wheel 21 moves to the third moving position, it means that the coffee powder 4 in the powder receiving container 3 is pressed by the powder pressing wheel 21 to a certain thickness, and the coffee powder 4 in the powder receiving container 3 can undergo the next extraction process. Therefore, by moving the position of the powder pressing wheel 21 to trigger the photoelectric switch 24, the photoelectric switch 24 generates an electrical signal and controls the powder pressing wheel 21 to stop operating, so as to achieve uniform pressing of the coffee powder 4 in the powder receiving container 3 quantitatively and realize automated operation.

[0062] Preferably, both the first preset time and the second preset time are 4.50 to 6.55 seconds; in the second powder pressing gear position, the running time of the powder pressing wheel 21 is 3.55 to 4.50 seconds; the gear interval time between the first powder pressing gear position and the stirring gear position, between the stirring gear position and the second powder pressing gear position, and between the second powder pressing gear position and the first powder pressing gear position is less than 1 second. Specifically, in the first powder pressing gear position of the powder pressing device 100, the running time of the powder pressing wheel 21 is 5 seconds, and the powder pressing wheel 21 rotates clockwise at a high speed, which can press the coffee powder 4 centrally placed in the powder receiving container 3 and push most of the coffee powder 4 to other positions of the powder receiving container 3; in the stirring gear position of the powder pressing device 100, the running time of the powder pressing wheel 21 is 5 seconds, and the powder pressing wheel 21 rotates counterclockwise at a low speed, which can push the coffee powder 4 centrally placed in the powder receiving container 3 to other positions of the powder receiving container 3, avoiding excessive density of the coffee powder 4 centrally placed in the powder receiving container 3 and further realizing uniform pressing of the coffee powder 4 in the powder receiving container 3.

[0063] Preferably, in the first powder pressing gear position, there are also a pushing mode and a powder pressing mode, and the rotation speed in the pushing mode is less than that in the powder pressing mode. Specifically, when the powder pressing wheel 21 is in the pushing mode, the powder pressing wheel 21 has a fourth rotation speed in the first direction, and the speed of the fourth rotation speed is less than the first rotation speed in the powder pressing mode. Therefore, the speed of the fourth rotation speed is slower, and it can push the centrally placed coffee powder 4 to the remaining positions in the powder receiving container 3. However, due to the special structure of the powder pressing wheel 21, the powder pressing wheel 21 has a relatively obvious extrusion effect when rotating in the first direction, and the effect of the powder pressing wheel 21 pushing the coffee powder 4 at the fourth speed is limited. Therefore, in the pushing mode, the powder pressing wheel 21 can play a certain pushing role and cannot completely achieve uniform distribution of the coffee powder 4 in the powder receiving container 3.

[0064] Further, first adopt the pushing mode to push the coffee powder 4 to the remaining positions in the powder receiving container 3 to prepare for the upcoming powder pressing mode.

[0065] The present invention also provides a powder pressing device 100, which includes a grinder 1, a housing 5, and a powder pressing device 2. The powder pressing device 2 has a driving component 22, a powder pressing wheel 21, a powder pressing shaft 23, and a powder receiving container 3. The grinder 1 is installed at the upper end of the housing 5, the driving component 22 is installed at the lower end of the housing 5, the powder pressing wheel 21 is installed at the first end of the powder pressing shaft 23, and the second end of the powder pressing shaft 23 is installed on the output end 2211 of the driving component 22. There is a control terminal on which the above-mentioned powder pressing method runs; the powder receiving container 3 is detachably matched with the housing 5, the powder pressing wheel 21 is located in the powder receiving cavity 31 of the powder receiving container 3, and the powder receiving container 3 is communicated with the grinder 1.

[0066] Specifically, the grinder 1 is used to grind coffee beans into coffee powder 4. Since the grinder 1 has a powder receiving pipe 12 which is communicated with the powder receiving container 3, the coffee powder 4 ground by the grinder 1 is centrally discharged into the powder receiving container 3. The driving component 22 is used to drive the powder pressing shaft 23 to rotate, and the powder pressing shaft 23 drives the powder pressing wheel 21 to rotate in the powder receiving container 3. When the powder pressing device 100 starts the first powder pressing gear, the powder pressing shaft 23 rotates in the first direction to compact the coffee powder 4 in the powder receiving container 3; when the powder pressing device 100 starts the stirring gear, the powder pressing shaft 23 rotates in the second direction to push the coffee powder 4 in the powder receiving container 3, so that the coffee powder 4 in the powder receiving container 3 is evenly distributed.

[0067] Preferably, the powder pressing wheel 21 has a powder pressing surface 2115 and a pushing surface 2113. The powder pressing surface 2115 is located at the bottom of the powder pressing wheel 21, and the pushing surface 2113 is located on the side wall of the powder pressing wheel 21. The powder pressing surface 2115 and the pushing surface 2113 are arranged at the same end of the powder pressing wheel 21, and the powder pressing surface 2115 and the pushing surface 2113 are adjacent to each other. Specifically, the powder pressing wheel 21 has a powder pressing surface 2115 and a pushing surface 2113. When the powder pressing wheel 21 rotates in the first direction, the powder pressing surface 2115 of the powder pressing wheel 21 extrudes the coffee powder 4 in the powder receiving container 3 to achieve a compacting effect; when the powder pressing wheel 21 rotates in the second direction, the pushing surface 2113 of the powder pressing wheel 21 has the effect of stirring the coffee powder 4, so that the coffee powder 4 in the powder receiving container 3 is evenly distributed; since both the powder pressing surface 2115 and the pushing surface 2113 are located at the same end of the powder pressing wheel 21 and the powder pressing surface 2115 and the pushing surface 2113 are adjacent to each other, in use, the special structure of the powder pressing wheel 21 can achieve extruding the coffee powder 4 when rotating clockwise and stirring the coffee powder 4 when the powder pressing wheel 21 rotates counterclockwise.

[0068] Preferably, the powder pressing wheel 21 includes a connecting body 212 and at least two wheel bodies 211. The two wheel bodies 211 are installed on the outer wall of the connecting body 212, and the connecting body 212 is installed at the first end of the powder pressing shaft 23; each wheel body 211 includes a powder pressing end 2112 and an avoidance end 2111. The powder pressing end 2112 of one wheel body 211 is close to the avoidance end 2111 of the other wheel body 211, and there is a gap 2114 between the powder pressing end 2112 and the avoidance end 2111; on the powder pressing end 2112, the bottom of the wheel body 211 forms a powder pressing surface 2115, and the side wall of the wheel body 211 forms a pushing surface 2113.

[0069] Specifically, when the powder pressing shaft 23 drives the connecting body 212 to rotate, the connecting body 212 drives the two wheel bodies 211 to rotate. The powder pressing ends 2112 of the wheel bodies 211 act on the coffee powder 4 in the powder receiving container 3 to further compact the coffee powder 4; when the coffee powder 4 of the grinder 1 moves to the powder receiving container 3 through the powder receiving pipe 12, the coffee powder 4 generally drops onto the powder pressing wheel 21. When the coffee powder 4 accumulates to a certain height, it will fall into the gap 2114 along the upper surface of the powder pressing wheel 21 and move to the lower part of the powder pressing wheel 21 through the gap 2114. Since on the powder pressing end 2112, the side wall of the wheel body 211 forms a pushing surface 2113, when the powder pressing wheel 21 rotates in the second direction, the pushing surface 2113 of the powder pressing wheel 21 pushes the coffee powder 4, so that the coffee powder 4 moves along the rotation path direction of the powder pressing wheel 21 and is evenly distributed into the powder receiving container 3; in addition, the coffee powder 4 will also move from the gap 2114 to the upper surface of the powder pressing wheel 21; when the powder pressing wheel 21 rotates in the first direction, the coffee powder 4 on the upper surface of the powder pressing wheel 21 will also move to the bottom of the powder pressing wheel 21 due to the centrifugal force.

[0070] Preferably, the wheel body 211 is in an inclined plate-like structure. The avoidance end 2111 is located at the highest point of the wheel body 211, the powder pressing end 2112 is located at the lowest point of the wheel body 211, the bottom of the wheel body 211 is concave, and the bottom of the wheel body 211 has an arc surface. Specifically, due to the inclined plate-like structure of the wheel body 211 and the arc surface at the bottom of the wheel body 211, when the wheel body 211 rotates, the powder pressing surface 2115 (arc surface) of the wheel body 211 acts on the bottom of the powder receiving container 3, and the lowest point of the wheel body 211 will directly contact the bottom surface of the powder receiving container 3 to further grind and compact the coffee powder 4, while the arc surface away from the lowest point of the wheel body 211 will push the coffee powder 4 to move to the remaining positions of the powder receiving container 3.

[0071] Preferably, the powder pressing device 100 further includes a photoelectric switch 24. The photoelectric switch 24 is installed in the housing 5. The photoelectric switch 24 includes a transmitting element 241 and a receiving element 242. The outer wall of the powder pressing shaft 23 has a light passing groove 232. The light passing groove 232 extends along the circumferential direction of the powder pressing shaft 23. The transmitting element 241 has a signal light ray. The signal light ray passes through the light passing groove 232 so that the receiving element 242 can obtain the signal light ray. Specifically, when the coffee powder 4 in the powder receiving container 3 undergoes multiple powder pressing cycle periods, the coffee powder 4 in the powder receiving container 3 is compacted, and the coffee powder 4 in the powder receiving container 3 accumulates to a certain height, causing the powder pressing wheel 21 and the powder pressing shaft 23 to move upward. When the powder pressing shaft 23 moves to the moving height, the light passing groove 232 of the powder pressing shaft 23 moves between the transmitting element 241 and the receiving element 242. The signal light ray generated by the transmitting element 241 passes through the light passing groove 232 and is incident on the receiving element 242. The receiving element 242 obtains the signal light ray and controls the driving assembly 22 to stop rotating through the control circuit board, realizing the single quantitative powder pressing of the coffee powder 4.

[0072] Further, when the coffee powder 4 in the powder receiving container 3 is brewed and discarded, the powder receiving container 3 is inserted into the housing 5. The powder pressing wheel 21 automatically moves to the bottom of the powder receiving container 3 due to its own weight, and the light passing groove 232 moves out of the position between the transmitting element 241 and the receiving element 242. The outer wall of the powder pressing shaft 23 blocks the transmission of the signal light ray, and the receiving element 242 cannot obtain the signal light ray. The driving assembly 22 continuously operates to drive the powder pressing wheel 21 to compact the coffee powder 4 in the powder receiving container 3.

[0073] In this embodiment, the driving assembly 22 includes a driving member 221, a driving wheel 222, a transmission shaft 223, a first transmission wheel 224, a second transmission wheel 225, and a third transmission wheel 231. The driving member 221 is installed in the housing 5. The driving wheel 222 is installed at the output end 2211 of the driving member 221. The transmission shaft 223 is rotatably installed in the housing 5. The first transmission wheel 224 is installed at the first end of the transmission shaft 223. The second transmission wheel 225 is installed at the second end of the transmission shaft 223. The first transmission wheel 224 meshes with the driving wheel 222. The third transmission wheel 231 is installed at the second end of the powder pressing shaft 23. The third transmission wheel 231 is adhered to the second transmission wheel 225. Specifically, when the driving member 221 is started, the driving member 221 drives the driving wheel 222 to rotate. The driving wheel 222 drives the transmission shaft 223 and the second transmission wheel 225 to rotate through the first transmission wheel 224. The second transmission wheel 225 drives the third transmission wheel 231 to rotate, thereby realizing the rotation of the powder pressing shaft 23. The powder pressing shaft 23 further drives the powder pressing wheel 21 to rotate.

[0074] When referring to the drawings, new features that appear are described. To avoid the description being less concise due to repeated reference to the drawings, features that have been described clearly are not referred to in the drawings one by one.

[0075] The purpose of the above embodiments is to exemplarily reproduce and deduce the technical solutions of the present invention, and to completely describe the technical solutions, purposes and effects of the present invention. The purpose is to enable the public to understand the disclosed content of the present invention more thoroughly and comprehensively, and it does not limit the protection scope of the present invention hereby.

[0076] The above embodiments are not an exhaustive list based on the present invention. In addition, there may be multiple other embodiments not listed. Any substitution and improvement made on the basis of not violating the concept of the present invention fall within the protection scope of the present invention.

Claims

1. A powder pressing method of a powder pressing device, characterized in that: The powder pressing device has a first powder pressing gear and a stirring gear, the powder pressing device has a powder receiving container and a rotatable powder pressing wheel, the powder pressing wheel is arranged in the powder receiving container, and the powder pressing wheel has at least a first moving position and a second moving position; The powder pressing method comprises the following steps: Starting the first powder compacting gear, controlling the powder compacting wheel to rotate at a first speed and in a first direction at a first moving position for a first preset time; Starting the stirring gear to control the powder pressing wheel to rotate at a second speed and in a second direction for a second preset time at the first moving position; The first powder compacting gear is started again until the powder compacting wheel moves from the first moving position to the second moving position; The first rotation speed of the powder compacting wheel is greater than the second rotation speed of the powder compacting wheel.

2. The powder pressing method of the powder pressing device according to claim 1, characterized in that: The powder pressing wheel has a powder pressing surface and a pushing surface. When the powder pressing wheel rotates in a first direction, the powder pressing surface of the powder pressing wheel contacts the coffee powder in the powder receiving container. When the powder pressing wheel rotates in the second direction, both the powder pressing surface and the pushing surface of the powder pressing wheel are in contact with the coffee powder in the powder receiving container.

3. The powder pressing method of the powder pressing device according to claim 1, characterized in that: The powder pressing device further has a second powder pressing gear. Before the first powder pressing gear is started again, the second powder pressing gear is started to control the powder pressing wheel to rotate at a third speed and in the first direction at the first moving position; The first rotation speed of the powder compacting wheel is greater than the third rotation speed of the powder compacting wheel.

4. The powder pressing method of the powder pressing device according to claim 3, characterized in that: The powder compacting device is operated in sequence at the first powder compacting gear, the stirring gear, the second powder compacting gear, and the first powder compacting gear to form a single powder compacting cycle; The powder pressing device also has a photoelectric switch, and the powder pressing wheel also has a third moving position. After the powder pressing device goes through multiple powder pressing cycles, the powder pressing wheel moves to the third moving position and triggers the photoelectric switch to control the powder pressing wheel to stop operating.

5. The powder pressing method of the powder pressing device according to claim 3, characterized in that: The first preset time and the second preset time are both 4.50 to 6.55 seconds; at the second powder compacting gear, the running time of the powder compacting wheel is 3.55 to 4.50 seconds; The gear interval time between the first powder pressing gear and the stirring gear, between the stirring gear and the second powder pressing gear, and between the second powder pressing gear and the first powder pressing gear is less than 1 second.

6. The powder pressing method of the powder pressing device according to claim 1, characterized in that: In the first powder pressing gear, a pushing mode and a powder pressing mode are further provided, and the rotation speed of the pushing mode is lower than the rotation speed of the powder pressing mode.

7. A powder pressing device, characterized in that: The invention comprises a grinder, a housing, and a powder press, wherein the powder press has a driving assembly, a powder pressing wheel, a powder pressing shaft, and a powder receiving container, wherein the grinder is mounted on the upper end of the housing, the driving assembly is mounted on the lower end of the housing, the powder pressing wheel is mounted on the first end of the powder pressing shaft, and the second end of the powder pressing shaft is mounted on the output end of the driving assembly, and a control terminal, wherein the powder pressing method according to any one of claims 1 to 6 is run on the control terminal; The powder receiving container is detachably matched with the outer shell, the powder pressing wheel is located in the powder receiving container, and the powder receiving container is communicated with the grinder.

8. The powder pressing device according to claim 7, characterized in that The powder pressing wheel has a powder pressing surface and a pushing surface, wherein the powder pressing surface is located at the bottom of the powder pressing wheel, and the pushing surface is located at the side wall of the powder pressing wheel. The powder pressing surface and the pushing surface are arranged at the same end of the powder pressing wheel, and the powder pressing surface is arranged adjacent to the pushing surface.

9. The powder pressing device according to claim 8, characterized in that The powder pressing wheel comprises a connecting body and at least two wheel bodies, the two wheel bodies are mounted on the outer wall of the connecting body, and the connecting body is mounted on the first end of the powder pressing shaft; Each wheel body comprises a powder pressing end and an avoidance end, wherein the powder pressing end of one wheel body is close to the avoidance end of another wheel body, and there is a gap between the powder pressing end and the avoidance end; On the powder pressing end, the bottom of the wheel body forms the powder pressing surface, and the side wall of the wheel body forms the pushing surface; The wheel body is an inclined plate-like structure, the avoidance end is located at the highest point of the wheel body, the powder pressing end is located at the lowest point of the wheel body, the bottom of the wheel body is concave, and the bottom of the wheel body has a curved surface.

10. The powder pressing device according to claim 7, characterized in that The powder pressing device further comprises a photoelectric switch, which is installed in the housing. The photoelectric switch comprises a transmitting element and a receiving element. The outer wall of the powder pressing shaft comprises a light-through groove, which is arranged to extend along the circumference of the powder pressing shaft. The transmitting element has a signal light, and the light-passing slot allows the signal light to pass through, so that the receiving element can obtain the signal light.

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