Coffee powder pressing device, powder pressing machine and coffee machine

Abstract

The utility model discloses a coffee powder pressing device, a powder pressing machine and a coffee machine. The coffee powder pressing device comprises a shell, a vertical powder pressing channel is arranged in the shell, a screw is arranged in the powder pressing channel, a driving device is arranged outside the powder pressing channel, and the driving device is in driving connection with the screw to drive the screw to rotate. A receiving hopper is arranged at the tail end of the powder pressing channel; the driving device comprises a motor; the screw is sleeved with a screw disc, a screw hole matched with the screw is formed in the middle of the screw disc, and the screw disc is driven by the screw to move up and down in a reciprocating mode. A plurality of guide through holes are formed in the screw disc around the periphery of the screw hole, a plurality of guide columns downwards penetrate through the guide through holes, limiting parts with the diameter larger than that of the through holes are arranged at the upper ends of the guide columns, powder pressing parts are installed at the lower ends of the guide columns, and the shape of the powder pressing parts is matched with that of the powder pressing channels; a pressure spring is sleeved outside the guide post; the spiral disc rotates and pushes the powder pressing part through the guide column and the pressure spring, and the elasticity of the pressure spring ensures that the powder pressing force is basically constant, so that the taste effect of brewed coffee is better.

Description

Technical Field

[0001] The utility model belongs to the field of coffee machines, and in particular relates to a coffee powder pressing device, a coffee powder pressing machine and a coffee machine. Background Art

[0002] Coffee powder pressing is one of the key steps in the coffee preparation process, mainly used to make espresso. Pressing technology is particularly important in the production of espresso. Traditionally, in the production process of espresso, a special powder press, called a "coffee grinder" or "coffee press", is used to manually compact the ground coffee powder and then brew it with (hot) water to extract the taste and aroma of the coffee. The main purpose of pressing is to ensure close contact between the coffee powders so that water can evenly penetrate and extract the taste of the coffee. Pressing also helps to adjust the concentration and taste. Due to the different types of coffee beans and the coarseness of the grinding, the force of pressing must be strictly controlled during pressing to ensure that the coffee made each time has consistent quality and taste. Therefore, it is particularly important to control the pressure during pressing. The pressing devices in the prior art are all manually pressed, and automatic pressing cannot be achieved. In addition, there are problems such as large differences, instability and uncontrollability in the pressing force during the pressing process, which affect the quality and taste of the coffee.

[0003] The Chinese patent with publication number CN 208692997U discloses a portable coffee extraction device, which is mainly intended to ensure that coffee powder residue does not leak out of the powder bin and enter the coffee liquid to affect the taste, but does not solve the problem of automatic powder pressing and powder pressing force.

[0004] Therefore, in view of the problems existing in the prior art, it is urgently necessary to provide a coffee powder pressing device, a coffee powder pressing machine and a coffee machine to solve the problems existing in the prior art. Summary of the invention

[0005] In response to the problems in the related technology, the utility model proposes a coffee powder pressing device, which drives the screw disk to rotate and move by driving the screw rod, and utilizes the connection relationship between the screw disk and the powder pressing part through the guide column and the compression spring to realize automatic rotation and push the powder pressing part to press the powder. The elastic force of the compression spring ensures that the powder pressing force is basically constant, thereby improving the taste of the brewed coffee.

[0006] The utility model is achieved in this way:

[0007] A coffee powder pressing device comprises a housing, a vertical pressing channel is arranged in the housing, a screw is arranged in the pressing channel, a driving device is arranged outside the pressing channel, the driving device is connected to the screw to drive the screw to rotate; a receiving hopper is arranged at the end of the pressing channel, and the driving device comprises a motor;

[0008] The outer sleeve of the screw rod is provided with a screw disk, and a screw hole matching the screw rod is provided in the middle of the screw disk. The screw disk moves back and forth up and down under the drive of the screw rod; a plurality of guide through holes are provided on the screw disk around the circumference of the screw hole, and a plurality of guide posts pass downward through the guide through holes. A limiting portion with a diameter larger than the through hole is provided at the upper end of the guide post, and a powder pressing portion is installed at the lower end of the guide post, and the shape of the powder pressing portion matches the powder pressing channel; a compression spring is provided on the outer sleeve of the guide post.

[0009] The screw rod and the screw disk are connected through threaded fitting.

[0010] Preferably, the powder pressing channel is a circular channel; it also includes a cylinder connected to the powder pressing part, the cylinder extends upward to cover the guide column; a plurality of annular grooves are provided on the outer wall of the cylinder, and friction rings are installed in the grooves. When the powder is pressed, the friction ring and the inner wall of the powder pressing channel generate circumferential and axial sliding friction.

[0011] Specifically, the friction ring is mainly used to form appropriate friction between the barrel and the outer shell. The powder pressing part is connected to the barrel as a whole, so the two will move synchronously. When the screw rotates, the screw disk and the barrel will rotate at the same time due to the connection with the guide column. The friction force can make the screw disk and the screw form relative rotation, preventing the screw disk from rotating in place with the screw, thereby realizing the up and down movement of the screw disk; that is, the cooperation between the screw and the screw disk. When the screw rotates, the screw disk will move linearly along the axis of the screw, so the screw can drive the screw disk to rotate.

[0012] Preferably, the powder pressing part has a powder pressing plane formed as a surface of a powder pressing plate fixed to the lower end of the powder pressing part.

[0013] Specifically, the powder pressing plate rotates and moves along with the powder pressing part, and the coffee powder is pressed by the powder pressing plate, and the coffee powder is pressed and flattened during the rotation and advancement process.

[0014] Preferably, the limiting portion is located on the circumferential side of the disk surface of the screw disk close to the driving device, the guide through hole is located in the limiting portion, and a screw is provided in the limiting portion, which is connected with the guide column through the screw.

[0015] Specifically, through the connection between the screw and the guide column, the screw disk can be restricted so that it can rotate and move within the length of the guide column to prevent the screw disk from moving out of the guide column; that is, the screw disk can move within the column body of the guide column, and the powder pressing part can be driven to move by the compression spring. The elastic force of the compression spring is relatively stable, thereby forming a stable force to press the powder downward.

[0016] Preferably, a plurality of guide grooves are provided on one side of the powder pressing part connected to the guide pillar, the guide grooves are adapted to the guide pillars, and the guide pillars are fixed to the powder pressing part through the guide grooves;

[0017] The compression spring is pressed between the screw disk and the powder pressing part along the guide column.

[0018] Specifically, guide post holes are provided at both ends of the guide post, and the guide post is fixed in the guide groove through the guide post holes, and rotates and moves synchronously with the powder pressing part; that is, the guide post and the powder pressing part rotate and move synchronously; the guide groove is provided with a hole, and the guide post can be fixed in the guide groove by a screw.

[0019] Preferably, the size of the powder pressing plate is adapted to the size of the lower end of the powder pressing part, and a connecting hole is provided in the middle of the powder pressing plate, through which the powder pressing plate is fixed to the lower end of the powder pressing part.

[0020] Specifically, the powder pressing plate and the powder pressing part rotate and move synchronously.

[0021] Preferably, a discharge port is connected to the side wall of the compressed powder channel, and the height of the compressed powder channel where the discharge port is located is lower than the height of the compressed powder channel where the powder pressing part is located.

[0022] Specifically, the coffee powder enters the powder pressing channel along the discharge port and falls into the receiving hopper, and the powder pressing part directly presses the coffee powder in the receiving hopper along the powder pressing channel;

[0023] Specifically, a dense grid is provided in the receiving hopper, a handle is connected to the outside of the receiving hopper, and the powder pressing part presses and distributes the coffee powder in the receiving hopper along the powder pressing channel. After the powder pressing is completed, the receiving hopper can be directly used to brew coffee to avoid powder dropping during the pressing process. An arc groove is provided under the receiving hopper, and a cup is placed under the arc groove, and the brewed coffee can flow into the cup through the arc groove.

[0024] Preferably, the driving device further comprises a transmission wheel, a driven wheel and a main driving wheel which are sequentially connected through gear meshing, the transmission wheel is connected to the motor, and the main driving wheel is connected to the screw.

[0025] Specifically, the transmission wheel, the driven wheel and the main driving wheel are meshed with each other to achieve speed change to increase the torque. The motor drives the transmission wheel to rotate, the transmission wheel drives the driven wheel to rotate, and then the driven wheel drives the main driving wheel to rotate. The main driving wheel drives the screw to rotate, thereby realizing the rotation and propulsion of the screw disk, guide column, powder pressing part and compression spring.

[0026] A coffee powder pressing machine uses a coffee powder pressing device as described in any one of the above.

[0027] A coffee machine employs a coffee powder pressing device as described in any one of the above.

[0028] Compared with the prior art, the utility model achieves the following beneficial effects:

[0029] The utility model provides a coffee powder pressing device, in which a motor provides power to drive a driving device to rotate a screw, and the screw drives a screw disk to rotate and advance along a guide column. The guide column is fixedly connected to a powder pressing part, so that the powder pressing part rotates, and the screw disk can push the powder pressing part to rotate and advance through a compression spring. During the rotation and advancement process, the coffee powder is automatically rotated and pressed flat. Since the elastic force of the compression spring is basically constant and continuous, the force of pressing the powder is within a controllable range, so that the coffee powder is prevented from being pressed too tightly or loosely, thereby affecting the effect of brewing coffee, and at the same time improving the taste of the brewed coffee. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of a coffee powder pressing device in an embodiment of the utility model;

[0031] Figure 2 It is a schematic diagram of an explosion of a coffee powder pressing device in an embodiment of the utility model;

[0032] Figure 3 This is one of the cross-sectional schematic diagrams of a coffee powder pressing device in an embodiment of the utility model;

[0033] Figure 4 This is a second cross-sectional schematic diagram of a coffee powder pressing device in an embodiment of the utility model;

[0034] Figure 5 It is a schematic structural diagram of a powder pressing part and a cylinder of a coffee powder pressing device in an embodiment of the utility model;

[0035] Figure 6 This is a schematic diagram of the spiral disc structure of a coffee powder pressing device in an embodiment of the utility model;

[0036] Figure 7 The present invention is a schematic diagram of a guide column structure of a coffee powder pressing device in an embodiment of the present invention.

[0037] Reference numerals:

[0038] 101, housing; 102, screw; 103, guide post; 104, guide post hole; 105, compression spring;

[0039] 201, powder pressing part; 202, annular groove; 203, friction ring; 204, guide groove; 205, cylinder

[0040] 301, screw disk; 302, guide through hole; 303, limit portion;

[0041] 401, powder pressing plate;

[0042] 501, powder pressing channel; 502, discharge port;

[0043] 601, receiving hopper; 602, handle;

[0044] 701, driving device; 702, transmission wheel; 703, driven wheel; 704, main driving wheel; 705, motor. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] Example:

[0047] like Figures 1 to 7 A coffee powder pressing device comprises a housing 101, a vertical pressing passage 501 is arranged in the housing 101, a screw 102 is arranged in the pressing passage 501, a driving device 701 is arranged outside the pressing passage 501, the driving device 701 is connected to the screw 102 to drive the screw 102 to rotate; a receiving hopper 601 is arranged at the end of the pressing passage 501, and the driving device 701 comprises a motor 705;

[0048] The screw 102 is provided with a screw disk on its outer sleeve, and a screw hole matching the screw 102 is provided in the middle of the screw disk. The screw disk moves back and forth up and down under the drive of the screw 102; a plurality of guide through holes 302 are provided on the screw disk around the screw hole, and a plurality of guide pillars 103 pass downward through the guide through holes 302. A limiting portion 303 with a diameter larger than the through hole is provided at the upper end of the guide pillar 103, and a powder pressing portion 201 is installed at the lower end of the guide pillar 103, and the shape of the powder pressing portion 201 matches the powder pressing channel 501; a compression spring 105 is provided on the outer sleeve of the guide pillar 103.

[0049] The screw rod 102 and the screw disk are connected by threaded engagement.

[0050] The powder pressing channel 501 is a circular channel; it also includes a cylinder connected to the powder pressing part 201, and the cylinder extends upward to cover the guide column 103; a plurality of annular grooves 202 are provided on the outer wall of the cylinder, and friction rings 203 are installed in the grooves. When the powder is pressed, the friction rings 203 and the inner wall of the powder pressing channel 501 generate circumferential and axial sliding friction forces.

[0051] The friction ring 203 is mainly used to form appropriate friction between the barrel and the outer shell 101. The powder pressing part 201 is connected to the barrel as a whole, so the two will move synchronously. When the screw 102 rotates, the screw disk and the barrel will rotate at the same time due to the connection with the guide column 103. The friction force can make the screw disk and the screw 102 form relative rotation, avoiding the screw disk from rotating in place with the screw 102, thereby realizing the up and down movement of the screw disk; that is, the cooperation between the screw 102 and the screw disk, when the screw 102 rotates, the screw disk will move linearly along the axis of the screw 102, so the screw 102 can drive the screw disk to rotate.

[0052] The powder pressing part 201 has a powder pressing plane formed as a surface of a powder pressing plate 401 fixed to the lower end of the powder pressing part 201 .

[0053] The powder pressing plate 401 rotates and moves along with the powder pressing part 201, and the coffee powder is pressed by the powder pressing plate 401, and the coffee powder is pressed and flattened during the rotation and advancement process.

[0054] The limiting portion 303 is located on the circumferential side of the screw disk near the driving device 701 , and the guide through hole 302 is located in the limiting portion 303 . A screw is provided in the limiting portion 303 , and the limiting portion 303 is connected with the guide column 103 through the screw.

[0055] By connecting the screw to the guide column 103, the screw disk can be restricted so that it can rotate and move within the length of the guide column 103, thereby preventing the screw disk from moving out of the guide column 103; that is, the screw disk can move within the column range of the guide column 103, and the powder pressing part 201 can be driven to move by the compression spring 105. The elastic force of the compression spring 105 is relatively stable, thereby forming a stable force to press the powder downward.

[0056] A plurality of guide grooves 204 are provided on one side where the powder pressing part 201 is connected to the guide pillar 103. The guide grooves 204 are adapted to the guide pillar 103, and the guide pillar 103 and the powder pressing part 201 are fixed by the guide grooves 204.

[0057] The compression spring 105 is pressed between the screw disk and the powder pressing portion 201 along the guide column 103 .

[0058] The guide post 103 is provided with guide post holes 104 at both ends, and the guide post 103 is fixed in the guide groove 204 through the guide post holes 104, and rotates and moves synchronously with the powder pressing part 201; that is, the guide post 103 and the powder pressing part 201 rotate and move synchronously; the guide groove 204 is provided with holes, and the guide post 103 can be fixed in the guide groove 204 by screws.

[0059] The size of the powder pressing plate 401 is adapted to the size of the lower end of the powder pressing part 201 . A connecting hole is provided in the middle of the powder pressing plate 401 , and the powder pressing plate 401 is fixed to the lower end of the powder pressing part 201 through the connecting hole.

[0060] The powder compacting plate 401 rotates and moves in synchronization with the powder compacting portion 201 .

[0061] The side wall of the compressed powder channel 501 is connected with a discharge port 502 , and the height of the compressed powder channel 501 where the discharge port 502 is located is lower than the height of the compressed powder channel 501 where the powder pressing part 201 is located.

[0062] The coffee powder enters the powder pressing channel 501 along the discharge port 502 and falls into the receiving hopper 601. The powder pressing unit 201 directly presses the coffee powder in the receiving hopper 601 along the powder pressing channel 501.

[0063] The receiving hopper 601 is provided with a dense grid inside, and a handle 602 is connected to the outside of the receiving hopper 601. The powder pressing part 201 presses and distributes the coffee powder in the receiving hopper 601 along the powder pressing channel 501. After the powder pressing is completed, the receiving hopper 601 can be directly used to brew coffee to avoid powder dropping during the pressing process. An arc groove is provided under the receiving hopper 601, and a cup is placed under the arc groove, and the brewed coffee can flow into the cup through the arc groove.

[0064] The driving device 701 further comprises a transmission wheel 702, a driven wheel 703 and a main driving wheel 704 which are connected in sequence through gear meshing, the transmission wheel 702 is connected to a motor 705, and the main driving wheel 704 is connected to the screw 102. The transmission wheel 702, the driven wheel 703 and the main driving wheel 704 are meshed and connected to achieve speed change to increase torque, the motor 705 drives the transmission wheel 702 to rotate, the transmission wheel 702 drives the driven wheel 703 to rotate, and then the driven wheel 703 drives the main driving wheel 704 to rotate, and the main driving wheel 704 drives the screw 102 to rotate, thereby realizing the rotation and propulsion of the screw disk, the guide column 103, the powder pressing part 201 and the compression spring 105.

[0065] A coffee powder pressing machine uses the coffee powder pressing device as described above.

[0066] A coffee machine uses the coffee powder pressing device as described above.

[0067] The utility model provides a coffee powder pressing device, the principle of which is that a driving device 701 drives the screw 102 to rotate, and the spiral disk on the screw 102 can rotate and move along the screw 102, and the spiral disk drives the powder pressing part 201 to rotate through the guide column 103, and at the same time, the elastic force of the compression spring 105 pushes the powder pressing part 201 to move and press the powder, and the compression spring 105 is located between the nut and the cylinder body and is in a spring-pressed state, and the spiral disk drives the powder pressing part 201 to rotate and push toward the coffee powder in the receiving hopper 601 along the powder pressing channel 501 through the guide column 103 and the compression spring 105, and the coffee powder is rotated and pressed flat during the rotation and pushing process, and the elastic force of the compression spring 105 makes the powder pressing force basically constant and can be continuous, so as to avoid that the powder pressing force is too large or too small, which affects the taste of the coffee brewing, thereby achieving the effect of automatic and uniform powder pressing; after the powder pressing is completed, the receiving hopper 601 can be directly used to brew coffee, and the problems of powder dropping and uneven powder pressing in the middle of the pressing process are also avoided.

[0068] According to the disclosure and teaching of the above specification, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A coffee powder pressing device, comprising a housing, a vertical pressing channel provided in the housing, a screw provided in the pressing channel, a driving device provided outside the pressing channel, the driving device being connected to the screw to drive the screw to rotate; a receiving hopper is provided at the end of the pressing channel, characterized in that: The driving device comprises a motor; The outer sleeve of the screw rod is provided with a screw disk, and a screw hole matching the screw rod is provided in the middle of the screw disk. The screw disk moves back and forth up and down under the drive of the screw rod; a plurality of guide through holes are provided on the screw disk around the circumference of the screw hole, and a plurality of guide posts pass downward through the guide through holes. A limiting portion with a diameter larger than the through hole is provided at the upper end of the guide post, and a powder pressing portion is installed at the lower end of the guide post, and the shape of the powder pressing portion matches the powder pressing channel; a compression spring is provided on the outer sleeve of the guide post.

2. The coffee powder pressing device according to claim 1, characterized in that: The powder pressing channel is a circular channel; it also includes a cylinder connected to the powder pressing part, which extends upward to cover the guide column; a plurality of annular grooves are provided on the outer wall of the cylinder, and friction rings are installed in the grooves. When the powder is pressed, the friction rings and the inner wall of the powder pressing channel generate circumferential and axial sliding friction forces.

3. The coffee powder pressing device according to claim 1, characterized in that: The powder pressing part has a powder pressing plane formed as a surface of a powder pressing plate fixed to the lower end of the powder pressing part.

4. The coffee powder pressing device according to claim 1, characterized in that: The limiting part is located on the circumferential side of the disk surface of the screw disk close to the driving device, the guide through hole is located in the limiting part, and a screw is arranged in the limiting part, which is connected with the guide column through the screw.

5. The coffee powder pressing device according to claim 1, characterized in that: A plurality of guide grooves are provided on one side where the powder pressing part and the guide pillar meet, and the guide grooves are adapted to the guide pillars, and the guide pillars and the powder pressing part are fixed by the guide grooves; The compression spring is pressed between the screw disk and the powder pressing part along the guide column.

6. The coffee powder pressing device according to claim 3, characterized in that: The size of the powder pressing plate is adapted to the size of the lower end of the powder pressing part. A connecting hole is provided in the middle of the powder pressing plate, and the powder pressing plate is fixed to the lower end of the powder pressing part through the connecting hole.

7. The coffee powder pressing device according to claim 1, characterized in that: A discharge port is connected to the side wall of the powder compression channel, and the height of the discharge port at the compressed powder channel is lower than the height of the compressed powder channel at the powder compression part.

8. The coffee powder pressing device according to claim 1, characterized in that: The driving device also includes a transmission wheel, a driven wheel and a main driving wheel which are sequentially connected through gear meshing. The transmission wheel is connected to the motor, and the main driving wheel is connected to the screw.

9. A powder pressing machine, characterized in that: A coffee powder pressing device as described in any one of claims 1 to 8 is used.

10. A coffee machine, characterized in that: A coffee powder pressing device as described in any one of claims 1 to 8 is used.

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