Extraction device, coffee machine and judgment method

Abstract

The invention provides an extraction device, a coffee machine and a judgment method. The extraction device comprises a bracket; the powder receiving cylinder assembly is connected with the support, and the powder receiving cylinder assembly is used for containing raw materials; the powder pressing cylinder assembly is connected with the bracket and comprises an extraction sleeve and an extraction head; the extraction sleeve is movably arranged so as to extrude raw materials in the powder receiving cylinder assembly; an extraction channel for raw materials to enter the extraction sleeve is arranged in the extraction sleeve; when the extraction sleeve extrudes the raw materials, the extraction head and the extraction sleeve are movably arranged relatively; the first sensing module is used for sensing the position of the extraction sleeve; and the second sensing module is used for sensing the stroke of the extraction head. The technical problems that a sensor for controlling the amount of coffee powder in a grinding mechanism is large in size and occupies a large space are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of coffee machines, and in particular to an extraction device, a coffee machine and a determination method. Background Art

[0002] In the prior art, the Italian-style fully automatic coffee machine controls the amount of coffee powder by mostly relying on a time-controlled grinding mechanism or adding a weight sensor at the bottom of the powder receiving tube.

[0003] However, relying on the time-controlled grinding mechanism to control the amount of coffee powder will result in large deviations in the amount of coffee powder, and the amount of powder output is not accurate, making it difficult to accurately control the concentration of the desired flavor of coffee. Although adding a weight sensor at the bottom of the powder receiving tube solves the problem of inaccurate powder output, the unit of coffee powder is usually 0.1g, and the weight sensor with an accuracy of 0.1g is relatively expensive, and the sensor is relatively large in size, occupying more space.

[0004] Therefore, the prior art needs to be further developed. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and provide an extraction device, a coffee machine and a determination method to solve the technical problem in the related art that the sensor for controlling the amount of coffee powder in the grinding mechanism is relatively large in size and occupies a relatively large space.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: an extraction device is provided, comprising: an extraction device, including a bracket; a powder receiving barrel assembly, connected to the bracket, and used to hold raw materials in the powder receiving barrel assembly; a powder pressing barrel assembly, connected to the bracket, and the powder pressing barrel assembly includes an extraction sleeve and an extraction head; the extraction sleeve is movably arranged to squeeze the raw materials in the powder receiving barrel assembly; an extraction channel is arranged in the extraction sleeve for the raw materials to enter the extraction sleeve; when the extraction sleeve squeezes the raw materials, the extraction head and the extraction sleeve are movably arranged relative to each other; a first sensing module, the first sensing module is used to sense the position of the extraction sleeve; and a second sensing module, the second sensing module is used to sense the stroke of the extraction head.

[0007] Furthermore, the extraction device includes a moving part, which is connected to the extraction sleeve; the first sensing module includes a first micro switch arranged on the bracket; the moving part and the first micro switch are arranged correspondingly, so that the extraction sleeve drives the moving part to move to the first preset position, thereby triggering the first micro switch.

[0008] Furthermore, the extraction head includes a slide rod inserted in the extraction channel, and the slide rod is movably arranged in the extraction channel; a first sealing ring is arranged between the slide rod and the extraction channel.

[0009] Furthermore, the extraction channel includes a first extraction channel and a second extraction channel arranged at intervals, the slide bar includes a first slide bar inserted in the first extraction channel and a second slide bar inserted in the second extraction channel; and the moving part is arranged between the first slide bar and the second slide bar.

[0010] Furthermore, the extraction sleeve includes a first mounting groove and a second mounting groove which are arranged at intervals; a first elastic member is arranged in the first mounting groove, one end of the first elastic member is connected to the extraction sleeve, and the other end of the first mounting groove is connected to the extraction head; a second elastic member is arranged in the second mounting groove, one end of the second elastic member is connected to the extraction sleeve, and the other end of the second elastic member is connected to the extraction head; the moving member is located between the first elastic member and the second elastic member.

[0011] Furthermore, the extraction device includes: a driving motor, a driving tooth is provided on the output shaft of the driving motor; an output gear, the output gear is meshed with the driving tooth, so as to drive the output gear to rotate, thereby driving the powder cylinder assembly to move; wherein, the second sensing module includes a second micro switch, and the second micro switch is arranged corresponding to the output gear, so as to trigger the second micro switch by driving the output gear to rotate to a second preset position.

[0012] Furthermore, a first guide groove is provided on the bracket, and the first guide groove extends along the moving direction of the extraction head. A connecting block is provided on the extraction head, and the connecting block is movably arranged in the first guide groove.

[0013] Furthermore, the extraction device also includes a rotating component, which includes: a rotating shaft, the output gear is provided with a connecting shaft, the connecting shaft passes through the bracket and is connected to the rotating shaft; a slider, the slider is arranged at an interval from the rotating shaft; a second guide groove is provided on the extraction head, and the slider is movably arranged in the second guide groove to drive the extraction head to move by driving the rotating component to rotate.

[0014] Furthermore, the powder receiving barrel assembly includes a accommodating chamber for accommodating raw materials, the accommodating chamber is a cylindrical structure, the extraction sleeve has an extruded shell with a cylindrical structure, a second sealing ring is provided on the extruded shell, and the second sealing ring abuts against the inner wall of the accommodating chamber; and / or, a filter screen for blocking the extraction channel is provided at the opening of the extraction channel, and an extraction hole is provided on the filter screen, and the extraction hole is provided through the filter screen.

[0015] A coffee machine comprises an extraction device, wherein the extraction device is the extraction device mentioned above.

[0016] A determination method is applicable to the above-mentioned extraction device, and the determination method includes: driving the extraction head of the extraction device to move, and driving the extraction sleeve to squeeze the raw material in the powder tube assembly; if the first sensing module and the second sensing module both receive signals, it is determined that the amount of the raw material meets the requirements; if the first sensing module receives a signal and the second sensing module does not receive a signal, it is determined that the amount of the raw material exceeds the standard; if the first sensing module does not receive a signal and the second sensing module receives a signal, it is determined that the amount of the raw material is insufficient.

[0017] Beneficial effects:

[0018] 1. The micro switch combined with the spring compression distance is used to automatically detect the amount of coffee powder in the powder tube, solving the problem of too much or too little coffee powder during extraction.

[0019] 2. Only the extraction device of this solution needs to be installed to control the amount of coffee powder in the coffee machine, without adding a weight sensor, which occupies a small space and has low cost.

[0020] 3. The coffee powder quantity control method of this scheme is simple to operate and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a cross-sectional view of an extraction device according to an embodiment of the present invention;

[0022] Figure 2 is a cross-sectional view of a powder pressing cartridge assembly in one direction according to an embodiment of the present invention;

[0023] Figure 3 is a schematic diagram of the explosion structure of an extraction device according to an embodiment of the present invention;

[0024] Figure 4 is an exploded structural diagram of a powder pressing cartridge assembly according to an embodiment of the present invention;

[0025] Figure 5 is a cross-sectional view of the powder cartridge assembly in another direction of the embodiment of the present invention;

[0026] Figure 6 2 is a schematic structural diagram of a powder receiving cylinder assembly of an extraction device according to an embodiment of the present invention;

[0027] Figure 7 is a schematic structural diagram of a powder pressing cartridge assembly according to an embodiment of the present invention;

[0028] Figure 8 is a flow chart of a determination method according to an embodiment of the present invention.

[0029] The above drawings include the following reference numerals:

[0030] 1. bracket; 11. first guide groove; 17. bracket cover; 18. limiting column; 2. powder receiving cylinder assembly; 21. accommodating chamber; 3. pressed powder cylinder assembly; 31. extraction sleeve; 311. extraction channel; 3111. first extraction channel; 3112. second extraction channel; 313. first mounting groove; 314. second mounting groove; 315. first elastic member; 316. second elastic member; 317. extrusion shell; 318. second sealing ring; 31 9. Filter; 32. Extraction head; 321. Slide bar; 3211. First slide bar; 3212. Second slide bar; 322. Connecting block; 323. Second guide groove; 33. First sealing ring; 4. First sensing module; 41. First micro switch; 5. Second sensing module; 51. Second micro switch; 6. Moving part; 7. Driving motor; 8. Output gear; 81. Connecting shaft; 9. Rotating part; 91. Rotating shaft; 92. Sliding block. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0032] According to an embodiment of the present invention, an extraction device is provided. Figures 1 to 8 , including: a bracket 1; a powder receiving barrel assembly 2, connected to the bracket 1, and used to hold raw materials in the powder receiving barrel assembly 2; a powder pressing barrel assembly 3, connected to the bracket 1, and the powder pressing barrel assembly 3 includes an extraction sleeve 31 and an extraction head 32; the extraction sleeve 31 is movably arranged to squeeze the raw materials in the powder receiving barrel assembly 2; an extraction channel 311 for the raw materials to enter the extraction sleeve 31 is arranged in the extraction sleeve 31; when the extraction sleeve 31 squeezes the raw materials, the extraction head 32 is movably arranged relative to the extraction sleeve 31; a first sensing module 4, the first sensing module 4 is used to sense the position of the extraction sleeve 31; a second sensing module 5, the second sensing module 5 is used to sense the stroke of the extraction head 32. In this way, when the extraction head 32 moves, it drives the extraction sleeve 31 to move, and the extraction sleeve 31 squeezes the raw material in the powder receiving barrel assembly 2, and the raw material enters the extraction channel 311. The reaction force of the raw material in the powder receiving barrel assembly 2 on the pressed powder barrel assembly 3 causes the extraction sleeve 41 to rise to a sufficient position distance, at which time the first sensing module 4 is triggered, but the pressed powder barrel assembly 3 has not moved into place, so the pressed powder barrel assembly 3 continues to move downward. When the second sensing module 5 is triggered, it means that the pressed powder barrel assembly 3 has also moved into place. At this time, the raw material in the powder receiving barrel assembly 2 is of a value that meets the extraction requirements.

[0033] Specifically, according to the above-mentioned embodiments, the extraction device of the present application can effectively control the amount of coffee powder, make the output amount accurate, and solve the technical problem that the sensor is relatively large in size and occupies a lot of space.

[0034] Specifically, see Figure 2 , Figure 3 The extraction device of this embodiment includes a moving part 6, which is connected to the extraction sleeve 31; the first sensing module 4 includes a first micro switch 41 arranged on the bracket 1; the moving part 6 and the first micro switch 41 are arranged correspondingly, so that the extraction sleeve 31 drives the moving part 6 to move to the first preset position, thereby triggering the first micro switch 41. In this way, when the extraction head 32 drives the extraction sleeve 31 to move, the extraction sleeve 31 squeezes the raw material in the powder receiving tube assembly 2 so that the raw material enters the extraction channel 311. At the same time, the extraction sleeve 31 is stopped from moving due to the resistance of the raw material. At this time, the height of the raw material is determined by measuring the stroke of the extraction head 32, thereby determining whether the raw material is too little. Afterwards, the extraction head 32 continues to move, while the extraction sleeve 31 stops moving, and then the extraction sleeve 31 drives the moving part 6 to move to the first preset position, thereby triggering the first micro switch 41, and then judging whether there are too many raw materials. This arrangement ensures that the amount of coffee powder is always the same as the volume in the extraction channel 311, and remains constant, effectively controlling the amount of coffee powder and avoiding the problem of too much or too little powder. There is no need to set a weighing sensor, which solves the problem of too much or too little coffee powder during extraction.

[0035] Specifically, see Figure 1 , Figure 2 The extraction head 32 of this embodiment includes a slide bar 321 inserted in the extraction channel 311, and the slide bar 321 is movably arranged in the extraction channel 311; a first sealing ring 33 is arranged between the slide bar 321 and the extraction channel 311. When the extraction head 32 moves, the slide bar 321 and the raw material entering the extraction channel 311 squeeze each other. Since the slide bar 321 is movably arranged in the extraction channel 311, and the first sealing ring 33 is arranged between the slide bar 321 and the extraction channel 311 to block the movement track of the raw material, the raw material blocks the movement of the extraction sleeve 31. Therefore, the arrangement of the slide bar 321 and the first sealing ring 33 can make the raw material more smoothly and well sealed during the extraction process.

[0036] Specifically, see Figure 1 , Figure 2The extraction channel 311 of this embodiment includes a first extraction channel 3111 and a second extraction channel 3112 arranged at intervals, and the slide bar 321 includes a first slide bar 3211 inserted in the first extraction channel 3111 and a second slide bar 3212 inserted in the second extraction channel 3112; the moving member 6 is arranged between the first slide bar 3211 and the second slide bar 3212. When the raw material enters the first extraction channel 3111 and the second extraction channel 3112, since the slide bar 321 is a movable setting, the raw material blocks the movement of the extraction sleeve 31, and the first slide bar 3211 and the second slide bar 3212 continue to move, thereby making the moving member 6 approach the first preset position, and after reaching the first preset position, the first micro switch 41 is triggered. The setting of two groups of channels and two groups of slide bars increases the force area relative to the setting of one group of slide bars, allowing the raw material to exert a greater force, thereby triggering the first micro switch 41. Through the force exerted by the raw materials on the slide bar 321, the extraction device of this embodiment can make the moving part 6 trigger the first micro switch 41 to control the amount of coffee powder without installing a high-power motor.

[0037] Specifically, see Figure 5 , the extraction sleeve 31 includes a first installation groove 313 and a second installation groove 314 which are arranged at intervals; a first elastic member 315 is arranged in the first installation groove 313, one end of the first elastic member 315 is connected to the extraction sleeve 31, and the other end of the first installation groove 313 is connected to the extraction head 32; a second elastic member 316 is arranged in the second installation groove 314, one end of the second elastic member 316 is connected to the extraction sleeve 31, and the other end of the second elastic member 316 is connected to the extraction head 32; the moving member 6 is located between the first elastic member 315 and the second elastic member 316. When the extraction head 32 drives the extraction sleeve 31 to move, and the raw material enters the extraction channel 311, the extraction sleeve 31 squeezes the raw material, and the raw material also exerts a force on the extraction sleeve 31, squeezing the first elastic member 315 in the first installation groove 313 and the second elastic member 316 in the second installation groove 314, so that the extraction sleeve 31 and the moving member 6 move relative to the extraction head 32, and the moving member 6 triggers the first micro switch 41 when it reaches the first preset position. The arrangement of the two sets of mounting grooves and the two sets of elastic parts only requires the reaction force of the raw material on the spring to realize the function that the extraction sleeve 31 and the moving part 6 in the extraction device of this embodiment can move relative to the extraction head 32, which is light and convenient, and saves the manufacturing cost of the extraction device of this embodiment.

[0038] Specifically, see Figure 3The extraction device of this embodiment includes: a driving motor 7, on the output shaft of which a driving tooth is provided; an output gear 8, which is meshed with the driving tooth to drive the output gear 8 to rotate, thereby driving the powder pressing cylinder assembly 3 to move; wherein the second sensing module 5 includes a second micro switch 51, which is provided corresponding to the output gear 8, so as to trigger the second micro switch 51 by driving the output gear 8 to rotate to the second preset position. At the beginning of extraction, the driving motor 7 runs and drives the output gear 8 to rotate with the driving tooth, and when the output gear 8 rotates to the second preset position, the second micro switch 51 is triggered. This setting can fix the rotation stroke of the output gear 8 by triggering the second micro switch 51, and then fix the movement stroke of the powder pressing cylinder assembly 3. By judging whether the second micro switch 51 and the first micro switch 41 are triggered or not, it is obtained whether the amount of coffee powder is standard, and the amount of coffee powder is more accurately controlled.

[0039] Specifically, see Figure 3 The bracket 1 is provided with a first guide groove 11, which extends along the moving direction of the extraction head 32. The extraction head 32 is provided with a connecting block 322, which is movably arranged in the first guide groove 11. In this way, the extraction head 32 can move downward relative to the powder pressing cylinder assembly 2 in the first guide groove 11 through the connecting block 322, driving the extraction sleeve 31 to make the raw materials in the powder receiving cylinder assembly 2 enter the extraction channel 311. This arrangement is small in size and saves production costs.

[0040] Specifically, see Figure 3 , Figure 4 The extraction device of this embodiment further includes a rotating component 9, which includes: a rotating shaft 91, an output gear 8 is provided with a connecting shaft 81, and the connecting shaft 81 passes through the bracket 1 and is connected to the rotating shaft 91; a slider 92, and the slider 92 is arranged at intervals from the rotating shaft 91; a second guide groove 323 is provided on the extraction head 32, and the slider 92 is movably arranged in the second guide groove 323, so as to drive the rotating component 9 to rotate, thereby driving the extraction head 32 to move. The driving motor 7 is started, driving the output gear 8 to rotate, and the output gear 8 drives the rotating shaft 91 to rotate through the connecting shaft 81, and the rotating shaft 9 drives the slider 9 to slide through the rotating component 9, thereby driving the extraction head 32 to move. This connection arrangement makes the distribution of various structures in the extraction device more reasonable without affecting the function, and the volume occupied is small, saving production costs.

[0041] Specifically, see Figure 2 , Figure 6 , Figure 7The powder receiving barrel assembly 2 of this embodiment includes a receiving chamber 21 for receiving raw materials. The receiving chamber 21 is a cylindrical structure. The extraction sleeve 31 has an extrusion shell 317 of a cylindrical structure. The extrusion shell 317 is sleeved with a second sealing ring 318, and the second sealing ring 318 abuts against the inner wall of the receiving chamber 21; and / or, a filter screen 319 for blocking the extraction channel 311 is provided at the opening of the extraction channel 311. The filter screen 319 is provided with extraction holes, and the extraction holes are provided through the filter screen 319. The extraction head 32 drives the extrusion shell 317 on the extraction sleeve 31 to move and enter the receiving chamber 21. The extrusion shell 317 extrudes the raw materials. The second sealing ring 318 abuts against the inner wall of the receiving chamber 21 and moves with the extrusion shell 317. At this time, the raw materials in the receiving chamber 21 enter the extraction channel 311 through the extraction holes on the filter screen 319. This arrangement ensures the sealing of the extraction process and realizes the function of filtering coffee powder.

[0042] Specifically, a coffee machine includes an extraction device, and the extraction device is the extraction device in the above embodiment.

[0043] Specifically, the extraction device of the coffee machine of the present application adopts a solution of utilizing a micro switch in combination with a spring compression distance to realize automatic detection of the amount of coffee powder in the powder collecting tube, thereby avoiding excessive or insufficient coffee during extraction causing the coffee to be too bitter or too sour, and improving the user experience.

[0044] Specifically, see Figure 8 A determination method is applicable to the extraction device of the above embodiment, and the determination method includes: the driving motor 7 drives the extraction head 32 of the extraction device to move, and drives the extraction sleeve 31 to squeeze the raw materials in the powder receiving cylinder assembly 2, and the coffee powder has a reaction force on the powder pressing cylinder assembly 3, squeezing the spring of the powder pressing cylinder assembly 3.

[0045] If both the first sensing module 4 and the second sensing module 5 receive signals, it means that when the first microswitch 41 is triggered first, the reaction force of the coffee powder in the powder receiving tube assembly 2 on the powder pressing tube assembly 3 causes the extraction sleeve 41 to rise to a sufficient position distance, while the powder pressing tube assembly 3 has not moved into place and continues to move downward, the spring continues to be compressed, and then the second microswitch 51 is triggered, and the powder pressing tube assembly 3 also moves into place. At this time, the amount of coffee powder in the powder receiving tube assembly 2 meets the extraction requirements, and it is determined that the amount of raw materials meets the requirements.

[0046] If the first sensing module 4 receives a signal and the second sensing module 5 does not receive a signal, it means that when the first microswitch 41 is triggered first, and when the powder pressing cylinder assembly 3 cannot continue to move downward, the spring has reached the compression limit, and it is detected that the drive motor 7 is blocked. At this moment, the second microswitch 51 is not triggered, indicating that the powder pressing cylinder assembly 3 has not moved into place, proving that the amount of coffee powder in the powder receiving cylinder assembly 2 is too much, and it is determined that the amount of raw materials exceeds the standard.

[0047] If the first sensing module 4 does not receive a signal but the second sensing module 5 receives a signal, it means that when the second microswitch 51 is triggered first, the powder pressing cylinder assembly 3 has moved into place, but the reaction force of the coffee powder in the powder receiving cylinder assembly 2 on the powder pressing cylinder assembly 3 does not cause the extraction sleeve 31 to rise to a sufficient position distance, and the first microswitch 41 is not triggered. At this time, it is proved that the amount of coffee powder in the powder receiving cylinder assembly 2 is insufficient or lacking coffee powder, and it is determined that the amount of raw materials is insufficient.

[0048] Specifically, the determination method of this embodiment can effectively detect whether the amount of coffee powder in the powder receiving tube is appropriate, thereby avoiding the problem of excessive bitterness or sourness of coffee caused by excessive or insufficient extraction of coffee.

[0049] The method of fixing the powder cylinder assembly 3 of this embodiment is as follows:

[0050] The powder cylinder assembly 3 is fixed in the first guide groove 11 of the bracket 1 and the slide groove of the bracket cover 17 through two connecting blocks 322. The rotating shaft 91 is fixed with two sliders 92, and the sliders 92 are fixed on the second guide groove 323 of the extraction head 32. The two outwardly protruding shafts of the rotating shaft 91 are inserted into the shaft holes of the bracket 1 and the bracket cover 17. The upper end of the rotating shaft 40 is limited by the limit column 18 of the bracket 1 in the lower movable space, and the output gear 8 and the rotating shaft 91 are fixed to the bracket 1 by screws on one side of the bracket 1. The bracket cover 17 and the bracket 1 are fixed together by screws.

[0051] The second micro switch 51 is mounted on the bracket 1 and fixed by screws. The driving motor 7 drives the output gear 8 to rotate, and the output gear 8 triggers the second micro switch 51 .

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0053] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0054] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0055] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0056] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An extraction device, characterized in that: include: Bracket (1); A powder receiving cylinder assembly (2) is connected to the bracket (1), and the powder receiving cylinder assembly (2) is used to contain raw materials; A powder pressing cylinder assembly (3) is connected to the support (1), and the powder pressing cylinder assembly (3) comprises an extraction sleeve (31) and an extraction head (32); the extraction sleeve (31) is movably arranged to squeeze the raw material in the powder receiving cylinder assembly (2); an extraction channel (311) is arranged in the extraction sleeve (31) for the raw material to enter the extraction sleeve (31); when the extraction sleeve (31) squeezes the raw material, the extraction head (32) and the extraction sleeve (31) are movably arranged relative to each other; A first sensing module (4), the first sensing module (4) being used to sense the position of the extraction sleeve (31); A second sensing module (5), the second sensing module (5) is used to sense the travel of the extraction head (32).

2. The extraction device according to claim 1, characterized in that The extraction device comprises a moving part (6), and the moving part (6) is connected to the extraction sleeve (31); the first sensing module (4) comprises a first micro switch (41) arranged on the bracket (1); the moving part (6) and the first micro switch (41) are arranged correspondingly, so that the extraction sleeve (31) drives the moving part (6) to move to a first preset position, thereby triggering the first micro switch (41).

3. The extraction device according to claim 2, characterized in that: The extraction head (32) comprises a sliding rod (321) inserted into the extraction channel (311), and the sliding rod (321) is movably arranged in the extraction channel (311); a first sealing ring (33) is arranged between the sliding rod (321) and the extraction channel (311).

4. The extraction device according to claim 3, characterized in that: The extraction channel (311) comprises a first extraction channel (3111) and a second extraction channel (3112) which are arranged at intervals; the sliding rod (321) comprises a first sliding rod (3211) inserted in the first extraction channel (3111) and a second sliding rod (3212) inserted in the second extraction channel (3112); and the moving part (6) is arranged between the first sliding rod (3211) and the second sliding rod (3212).

5. The extraction device according to claim 3, characterized in that: The extraction sleeve (31) comprises a first mounting groove (313) and a second mounting groove (314) which are arranged at intervals; a first elastic member (315) is arranged in the first mounting groove (313), one end of the first elastic member (315) is connected to the extraction sleeve (31), and the other end of the first mounting groove (313) is connected to the extraction head (32); a second elastic member (316) is arranged in the second mounting groove (314), one end of the second elastic member (316) is connected to the extraction sleeve (31), and the other end of the second elastic member (316) is connected to the extraction head (32); the moving member (6) is located between the first elastic member (315) and the second elastic member (316).

6. The extraction device according to claim 1, characterized in that: The extraction device comprises: A driving motor (7), wherein the output shaft of the driving motor (7) is provided with driving teeth; An output gear (8), the output gear (8) being meshed with the driving teeth, so as to drive the output gear (8) to rotate, thereby driving the powder cylinder assembly (3) to move; The second sensing module (5) comprises a second micro switch (51), and the second micro switch (51) is arranged corresponding to the output gear (8) so as to trigger the second micro switch (51) by driving the output gear (8) to rotate to a second preset position.

7. The extraction device according to claim 6, characterized in that The bracket (1) is provided with a first guide groove (11), the first guide groove (11) extending along the moving direction of the extraction head (32), and the extraction head (32) is provided with a connecting block (322), the connecting block (322) being movably arranged in the first guide groove (11).

8. The extraction device according to claim 7, characterized in that The extraction device further comprises a rotating component (9), wherein the rotating component (9) comprises: A rotating shaft (91), the output gear (8) being provided with a connecting shaft (81), the connecting shaft (81) passing through the bracket (1) and being connected to the rotating shaft (91); A slider (92), the slider (92) being arranged at a distance from the rotating shaft (91); a second guide groove (323) being arranged on the extraction head (32), the slider (92) being movably arranged in the second guide groove (323) so as to drive the extraction head (32) to move by driving the rotating component (9) to rotate.

9. The extraction device according to claim 1, characterized in that: The powder receiving cylinder assembly (2) comprises a containing chamber (21) for containing the raw material, the containing chamber (21) is a cylindrical structure, the extraction sleeve (31) comprises an extrusion shell (317) of a cylindrical structure, a second sealing ring (318) is sleeved on the extrusion shell (317), and the second sealing ring (318) abuts against the inner wall of the containing chamber (21); and / or, A filter screen (319) for blocking the extraction channel (311) is provided at the opening of the extraction channel (311), and an extraction hole is provided on the filter screen (319), and the extraction hole is provided through the filter screen (319).

10. A coffee machine, comprising an extraction device, characterized in that: The extraction device is the extraction device according to any one of claims 1 to 9.

11. A determination method, applicable to the extraction device according to any one of claims 1 to 9, characterized in that: The determination method comprises: driving the extraction head (32) of the extraction device to move, and driving the extraction sleeve (31) to squeeze the raw materials in the powder receiving cylinder assembly (2); If both the first sensing module (4) and the second sensing module (5) receive signals, it is determined that the amount of the raw material meets the requirements; If the first sensing module (4) receives a signal and the second sensing module (5) does not receive a signal, it is determined that the amount of the raw material exceeds the standard; If the first sensing module (4) does not receive a signal but the second sensing module (5) receives a signal, it is determined that the amount of the raw material is insufficient.

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