An extraction device for a coffee machine based on rotational speed regulation

Abstract

The application discloses a kind of extraction devices for coffee machine based on speed regulation, it is related to coffee machine technical field, including outer shell, the automatic extraction component, grinder, extrusion component, water injector, cleaning assembly and automatic feeding assembly are arranged in the outer shell, the automatic extraction component includes first motor and extraction cup, the first motor drives extraction cup rotation, the grinder grinds raw materials, the extrusion component compacts powder, the water injector top is connected with electric heating water pipe, the cleaning assembly is cleaned to extraction cup, the automatic feeding assembly is used to add filter paper, by the setting of gas-liquid supply component, both can accelerate extraction effect, high-pressure water can be provided to extraction cup simultaneously and cleaned, the function of automatic cleaning is realized, reaches the effect of automatic coffee extraction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coffee machines, in particular to an extraction device for a coffee machine based on speed regulation. BACKGROUND

[0002] The working principle of a coffee machine usually relies on the action of heated water and pressure. The coffee machine first heats the water to an appropriate temperature. When the hot water passes through the coffee powder bed, the water comes into contact with the coffee powder, extracting the soluble substances in the coffee, such as caffeine, oil, aroma substances, and other flavor components. The extracted coffee liquid flows out through a filter screen or metal sieve into a coffee cup. A cup of extracted coffee is ready. Existing coffee machines can also intelligently adjust the particle size of the ground coffee raw material according to the user's selected taste, to achieve the adjustment of the taste of the coffee.

[0003] The filter screen or metal sieve through which the coffee liquid passes is actually an extraction cup loaded with coffee powder. The extraction cup is a separable part that needs to be operated by the user to perform the operations of receiving ground powder, compacting, and installing under the extraction device. After the extraction is completed, the extraction cup also needs to be cleaned. Coffee machine design engineers have realized that this is relatively troublesome to use. Therefore, they have developed preloaded coffee capsules to extract coffee by injecting hot water into the capsules through pressure, thereby eliminating the need to clean or install the extraction cup. However, the non-recyclability of coffee capsules has caused certain environmental impact, and there is a certain waste of resources. Therefore, from the perspective of sustainable development and utilization, the use of extraction cups is the best choice, and therefore there is a lack of coffee machines with automatic cleaning. SUMMARY

[0004] The present application aims to provide an extraction device for a coffee machine based on speed regulation to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: an extraction device for a coffee machine based on speed regulation, comprising an outer shell, an automatic extraction assembly, a grinder, a pressing assembly, a water injector, a cleaning assembly, and an automatic feeding assembly are arranged inside the outer shell. The automatic extraction assembly comprises a first motor and an extraction cup. The first motor drives the extraction cup to rotate. The grinder grinds the raw material. The pressing assembly compacts the powder. The water injector is connected with an electric heating water pipe at the top. The cleaning assembly cleans the extraction cup. The automatic feeding assembly is used to add filter paper.

[0006] Further, the top of the grinder penetrates the outer shell, the extrusion assembly is located on one side of the grinder, and the extrusion assembly comprises a second electric push rod and a compaction block arranged on the piston rod of the second electric push rod. The user puts the coffee raw material into the grinder, and after starting the device, the device grinds the raw material into corresponding granularity according to the user's selection. The ground coffee raw material falls into the extraction cup. The first motor drives the first rotating arm to rotate, and the first rotating arm drives the extraction cup to move below the extrusion assembly. The second electric push rod drives the compaction block to move downward, and the ground coffee raw material in the extraction cup is compacted by force. After the raw material is compacted, the extraction of coffee can be started.

[0007] Further, the automatic extraction assembly further comprises a first rotating arm, the first rotating arm is installed on the first motor, and a servo motor is arranged at the end of the first rotating arm away from the first motor. The motor shaft of the servo motor is connected with the extraction cup. The first motor moves the extraction cup below the water injector through the first rotating arm. Water is delivered to the electric heating water pipe to be heated. Hot water flows into the extraction cup through the water injector. Then, the extracted coffee liquid flows out from the bottom of the extraction cup. The user uses a cup to receive the extracted coffee liquid. When a certain flow rate is reached, the control system stops adding water to the electric heating water pipe, and the extraction stops.

[0008] Further, the cleaning assembly comprises a water receiving tray, a residue discharge pipe, a top cover body and a pair of multi-stage electric push rods. The pair of multi-stage electric push rods are installed upside down on the inner wall of the outer shell. The piston rods of the pair of multi-stage electric push rods are connected with the top cover body. The water receiving tray is located below the top cover body. The residue discharge pipe is connected to the bottom of the water receiving tray. The bottom of the residue discharge pipe penetrates the outer shell. When a round of extraction is completed, the first motor moves the extraction cup above the water receiving tray through the first rotating arm. The multi-stage electric push rods move the top cover body downward to cover the entire extraction cup. The servo motor first drives the extraction cup to rotate rapidly to use centrifugal force to throw out the residue in the extraction cup. The spray head sprays water downward. The servo motor drives the extraction cup to rotate slowly to clean the extraction cup, and the residue thrown onto the top cover body is also flushed down. The residue is discharged through the residue discharge pipe at the bottom of the water receiving tray. After cleaning is completed, the servo motor drives the extraction cup to rotate rapidly again to throw out residual water. The multi-stage electric push rods raise the top cover body upward. Through the cooperation of the cleaning assembly and the automatic extraction assembly, the automatic cleaning of the extraction cup is realized, and the trouble of manual cleaning is eliminated.

[0009] Further, the automatic feeding assembly comprises a third motor, a second rotating arm, a first electric push rod and an electric suction cup, the third motor is installed upside down on the inner wall of the outer shell, the second rotating arm is connected to the motor shaft of the third motor, the first electric push rod is installed at the end of the second rotating arm away from the third motor, and the electric suction cup is installed on the piston rod of the first electric push rod. The first motor moves the extraction cup above the vacuum machine through the first rotating arm, and the vacuum machine performs air suction. Since the bottom of the extraction cup is not sealed, the air pressure in the vacuum machine will not decrease, and the pressure sensor at this time cannot detect the decrease of the air pressure.

[0010] Further, the automatic feeding assembly further comprises a vacuum machine and a filter paper box, the vacuum machine is internally provided with a pressure sensor, the pressure sensor is connected with the control system through a circuit, and the filter paper box is slidably connected with the outer shell. The inside of the filter paper box is placed with filter paper, the filter paper box penetrates through the outer shell, a handle is installed on the side of the filter paper box extending out of the outer shell, and the user places the filter paper in the filter paper box in advance. The filter paper is placed into the outer shell, the third motor drives the first electric push rod to move above the filter paper box through the second rotating arm, the first electric push rod pushes the electric suction cup downward, so that the electric suction cup contacts the filter paper and sucks the filter paper, then the first electric push rod lifts the filter paper and moves above the extraction cup, and the filter paper is placed into the extraction cup. The filter paper has sealing property during movement, and after the filter paper seals the bottom of the extraction cup, the pressure sensor detects the decrease of the air pressure due to the sudden decrease of the air pressure in the vacuum machine, and the detection paper is placed in place. The coffee raw material can be ground, the vacuum machine stops working, and the first motor drives the extraction cup to move away through the first rotating arm.

[0011] Further, the outer shell is provided with a gas-liquid supply assembly in the middle, the gas-liquid supply assembly comprises a second motor, a first compressed leather case, a second compressed leather case and a partition plate, the second motor is fixedly installed with the partition plate, the first compressed leather case and the second compressed leather case are respectively arranged on the two sides of the partition plate, and one end of the first compressed leather case and the second compressed leather case is fixedly installed on the partition plate.

[0012] Further, the first dial plate is rotatably installed on one side of the first compression suitcase, the second dial plate is rotatably installed on one side of the second compression suitcase, reset coil springs are arranged at the transition of the first dial plate and the second dial plate and the partition plate, the other end of the first compression suitcase is connected with the first dial plate, the other end of the second compression suitcase is connected with the second dial plate, the first dial plate and the second dial plate are simultaneously rotated by the second motor, when the second motor rotates in the positive direction, the elastic ratchet on the first dial plate is in contact with the telescopic wedge block on the first dial plate, the elastic ratchet abuts against the telescopic wedge block, the first dial plate is rotated by the telescopic wedge block, when the first dial plate is rotated, the first compression suitcase is compressed, the elastic ratchet on the second dial plate on the other side is in contact with the telescopic wedge block on the second dial plate, the elastic ratchet is deflected and does not abut against the telescopic wedge block, but passes the telescopic wedge block, and the second dial plate remains stationary.

[0013] When the second motor reverses, the elastic ratchet on the second dial plate abuts against the telescopic wedge block on the second dial plate, the second dial plate is rotated, the second compression suitcase is compressed, the elastic ratchet on the first dial plate on the other side is deflected and passes the telescopic wedge block on the second dial plate, and the first dial plate remains stationary.

[0014] Further, the first dial plate and the second dial plate are slidably installed with telescopic wedge blocks away from the partition plate, springs are arranged between the two telescopic wedge blocks and the first dial plate and the second dial plate, the inclined surfaces of the two telescopic wedge blocks face opposite directions, the first dial plate and the second dial plate are respectively arranged with first dial plates and second dial plates away from the partition plate, the first dial plate and the second dial plate are connected with the motor shaft of the second motor, when the first compression suitcase is compressed to the limit position, the telescopic wedge block is forced to be retracted into the first dial plate, until the telescopic wedge block is completely retracted into the first dial plate, the elastic ratchet passes the telescopic wedge block, under the action of the reset coil spring, the first dial plate is rapidly rotated, the first compression suitcase is again pulled open, the telescopic wedge block is retracted under the action of the spring, until the elastic ratchet abuts against the telescopic wedge block again, and the first compression suitcase is compressed.

[0015] When the second motor reverses, the second dial plate also repeatedly compresses the second compression suitcase by the second dial plate.

[0016] Further, the first rotary disc and the second rotary disc are provided with elastic ratchets on the outer contour, the rotating directions of the two elastic ratchets are opposite, the first compression leather suitcase is provided with an air inlet and an air inlet pipe, one end of the air inlet pipe is connected with a water injector, one end of the second compression leather suitcase is connected with a water source pipe and a water inlet pipe, a shower head is installed in the top cover body, one end of the water inlet pipe is connected with the shower head, the first compression leather suitcase is repeatedly compressed to press air into the water injector through the air inlet pipe, so that hot water rapidly penetrates into the compressed raw material particles, and the extraction effect is accelerated, when the second compression leather suitcase is compressed, water is pressed into the shower head through the water inlet pipe, when the second compression leather suitcase is reset, water is sucked through the water source pipe, and the next compression is waited, through the arrangement of the gas-liquid supply assembly, the extraction effect can be accelerated, and high-pressure water can be provided to clean the extraction cup, the automatic cleaning function is realized, and the automatic coffee extraction effect is achieved.

[0017] Compared with the prior art, the beneficial effects of the present application are:

[0018] The servo motor drives the extraction cup to rotate rapidly at first, the centrifugal force throws out the slag in the extraction cup, the shower head sprays water downward, the servo motor drives the extraction cup to rotate slowly, the extraction cup is cleaned, and the slag thrown onto the top cover body is also flushed down, after cleaning, the servo motor drives the extraction cup to rotate rapidly again, and the residual water is thrown out, through the cooperation of the cleaning assembly and the automatic extraction assembly, the automatic cleaning of the extraction cup is realized, and the trouble of manual cleaning is avoided; through the arrangement of the gas-liquid supply assembly, the extraction effect can be accelerated, and high-pressure water can be provided to clean the extraction cup, the automatic cleaning function is realized, and the automatic coffee extraction effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall appearance structure diagram of the present application Figure One ;

[0020] Figure 2 It is the overall appearance structure diagram of the present application Figure Two ;

[0021] Figure 3 It is the internal structure diagram of the present application Figure One ;

[0022] Figure 4 It is the internal structure diagram of the present application Figure Two ;

[0023] Figure 5 It is the internal structure diagram of the present application Figure Three ;

[0024] Figure 6 It is the structure diagram of the gas-liquid supply assembly of the present application Figure One;

[0025] Figure 7 This is a schematic diagram of the gas-liquid supply component of the present invention. Figure Two ;

[0026] Figure 8 This is a schematic diagram of the cleaning assembly of the present invention.

[0027] In the diagram: 1. Outer shell; 2. First motor; 3. First rotating arm; 5. Extraction cup; 6. Grinder; 7. Water injector; 8. Electric hot water pipe; 9. Air inlet pipe; 10. Water receiving tray; 11. Slag discharge pipe; 12. Top cover; 13. Spray head; 14. Multi-stage electric actuator; 15. Water inlet pipe; 16. Second motor; 17. First compression tank; 18. Second compression tank; 19. Divider plate; 20. First dial; 21. Second dial; 22. Telescopic wedge; 23. First turntable; 24. Second turntable; 25. Elastic ratchet; 26. Third motor; 27. Second rotating arm; 28. First electric actuator; 29. ​​Electric suction cup; 30. Vacuum machine; 31. Filter paper box; 32. Second electric actuator; 33. Compactor block. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example: Figures 1-8 As shown, the present invention provides a technical solution: an extraction device for a coffee machine based on speed control, comprising a housing 1, an automatic extraction component, a grinder 6, an extrusion component, a water injector 7, a cleaning component, and an automatic feeding component. The automatic extraction component includes a first motor 2 and an extraction cup 5. The first motor 2 drives the extraction cup 5 to rotate. The grinder 6 grinds the raw materials, the extrusion component compacts the powder, the top of the water injector 7 is connected to an electric hot water pipe 8, the cleaning component cleans the extraction cup 5, and the automatic feeding component is used to add filter paper.

[0030] The top of the grinder 6 penetrates the outer shell 1, and the extrusion assembly is located on one side of the grinder 6, which comprises a second electric push rod 32 and a compaction block 33 arranged on the piston rod of the second electric push rod 32, and the automatic extraction assembly further comprises a first rotating arm 3 installed on the first motor 2, and a servo motor is arranged at the end of the first rotating arm 3 away from the first motor 2, and the motor shaft of the servo motor is connected with the extraction cup 5, the user puts the coffee raw materials into the grinder 6, and after starting the device, the device grinds the raw materials into corresponding particle sizes according to the selection of the user, the ground coffee raw materials fall into the extraction cup 5, the first motor 2 drives the first rotating arm 3 to rotate, the first rotating arm 3 drives the extraction cup 5 to move below the extrusion assembly, the second electric push rod 32 drives the compaction block 33 to move downward, and the ground particle raw materials in the extraction cup 5 are compacted by force, and after the raw materials are compacted, the extraction of coffee can be started, the first motor 2 moves the extraction cup 5 below the water injector 7 through the first rotating arm 3, water is transported into the electric heating water pipe 8 to be heated, hot water flows into the extraction cup 5 through the water injector 7, and then the extracted coffee liquid flows out from the bottom of the extraction cup 5, the user uses a cup to receive the extracted coffee liquid, and when a certain flow is reached, the control system stops adding water to the electric heating water pipe 8, and the extraction is stopped.

[0031] The cleaning assembly comprises a water receiving tray 10, a residue discharge pipe 11, a top cover 12 and a pair of multi-stage electric push rods 14, the pair of multi-stage electric push rods 14 are installed in an inverted manner on the inner wall of the outer shell 1, the top cover 12 is connected to the piston rod of the pair of multi-stage electric push rods 14, the water receiving tray 10 is located below the top cover 12, and the residue discharge pipe 11 is connected to the bottom of the water receiving tray 10 and penetrates the outer shell 1, when a round of extraction is completed, the first motor 2 moves the extraction cup 5 above the water receiving tray 10 through the first rotating arm 3, the multi-stage electric push rod 14 moves the top cover 12 downward to cover the entire extraction cup 5, the servo motor first drives the extraction cup 5 to rotate rapidly, the centrifugal force is used to throw out the residues in the extraction cup 5, the spray head 13 sprays water downward, and the servo motor drives the extraction cup 5 to rotate slowly, the extraction cup 5 is cleaned, and the residues thrown onto the top cover 12 are also flushed down, the residues are discharged through the residue discharge pipe 11 at the bottom of the water receiving tray 10, after cleaning, the servo motor drives the extraction cup 5 to rotate rapidly again, the residual moisture is thrown out, and the multi-stage electric push rod 14 lifts the top cover 12 upward, through the cooperation between the cleaning assembly and the automatic extraction assembly, the automatic cleaning of the extraction cup 5 is realized, and the trouble of manual cleaning is avoided.

[0032] The automatic feeding assembly comprises a third motor 26, a second rotating arm 27, a first electric push rod 28 and an electric suction cup 29. The third motor 26 is installed upside down on the inner wall of the outer shell 1. The second rotating arm 27 is connected to the motor shaft of the third motor 26. The first electric push rod 28 is installed at the end of the second rotating arm 27 away from the third motor 26. The electric suction cup 29 is installed on the piston rod of the first electric push rod 28. The automatic feeding assembly further comprises a vacuum machine 30 and a filter paper box 31. The vacuum machine 30 is internally provided with a pressure sensor connected to the control system through an electric circuit. The filter paper box 31 is slidingly connected to the outer shell 1. Filter paper is placed in the filter paper box 31. The filter paper box 31 penetrates the outer shell 1. A handle is installed on the side of the filter paper box 31 extending out of the outer shell 1. The user places the filter paper in the filter paper box 31 in advance. The filter paper is placed in the outer shell 1. The first motor 2 moves the extraction cup 5 above the vacuum machine 30 through the first rotating arm 3. The vacuum machine 30 performs air suction. Since the bottom of the extraction cup 5 is not sealed, the air pressure in the vacuum machine 30 will not decrease. At this time, the pressure sensor cannot detect the decrease in air pressure. The third motor 26 drives the first electric push rod 28 to move above the filter paper box 31 through the second rotating arm 27. The first electric push rod 28 pushes the electric suction cup 29 downward, so that the electric suction cup 29 contacts the filter paper and sucks up the filter paper. Then the first electric push rod 28 lifts the filter paper and moves above the extraction cup 5, and places the filter paper into the extraction cup 5. The filter paper has sealing property during movement. After the filter paper seals the bottom of the extraction cup 5, the air pressure in the vacuum machine 30 drops suddenly. After the pressure sensor detects the decrease in air pressure, it is indicated that the detection paper has been placed in position and can be used to grind coffee raw materials. The vacuum machine 30 stops working. The first motor 2 drives the extraction cup 5 to move away through the first rotating arm 3.

[0033] The middle part of the shell body 1 is provided with a gas-liquid supply assembly, which comprises a second motor 16, a first compression leather box 17, a second compression leather box 18 and a partition plate 19. The second motor 16 is fixedly installed on the partition plate 19. The first compression leather box 17 and the second compression leather box 18 are respectively arranged on the two sides of the partition plate 19. One end of the first compression leather box 17 and the second compression leather box 18 is fixedly installed on the partition plate 19. A first dial 20 is rotatably installed on one side of the partition plate 19 where the first compression leather box 17 is installed. A second dial 21 is rotatably installed on one side of the partition plate 19 where the second compression leather box 18 is installed. A reset coil spring is arranged at the transition of the first dial 20 and the second dial 21 and the partition plate 19. The other end of the first compression leather box 17 is connected with the first dial 20. The other end of the second compression leather box 18 is connected with the second dial 21. The second motor 16 drives the first dial 23 and the second dial 24 to rotate simultaneously. When the second motor 16 rotates forward, the elastic ratchet 25 on the first dial 23 is in contact with the telescopic wedge block 22 on the first dial 20. The elastic ratchet 25 abuts against the telescopic wedge block 22, and the first dial 20 is driven to rotate through the telescopic wedge block 22. When the first dial 20 is driven to rotate, the first compression leather box 17 is compressed. The elastic ratchet 25 on the other side of the second dial 24 is in contact with the telescopic wedge block 22 on the second dial 21. The elastic ratchet 25 is deflected and does not abut against the telescopic wedge block 22, but passes the telescopic wedge block 22. The second dial 21 remains stationary. When the second motor 16 reverses, the elastic ratchet 25 on the second dial 24 abuts against the telescopic wedge block 22 on the second dial 21. The second dial 21 is driven to rotate, and the second compression leather box 18 is compressed. The elastic ratchet 25 on the other side of the first dial 23 is deflected and passes the telescopic wedge block 22 on the second dial 21. The first dial 20 remains stationary.

[0034] The telescopic wedge block 22 is slidably installed on the side of the first dial 20 and the second dial 21 away from the partition plate 19. The spring is arranged between the two telescopic wedge blocks 22 and the first dial 20 and the second dial 21. The inclined surfaces of the two telescopic wedge blocks 22 face opposite directions. The first dial 23 and the second dial 24 are respectively arranged on the side of the first compression leather box 17 and the second compression leather box 18 away from the partition plate 19. The first dial 23 and the second dial 24 are connected with the motor shaft of the second motor 16. The elastic ratchet 25 is rotatably arranged on the outer contour of the first dial 23 and the second dial 24. The rotating directions of the two elastic ratchets 25 are opposite. The air inlet and the air inlet pipe 9 are arranged on the first compression leather box 17. One end of the air inlet pipe 9 is connected with the water injector 7. The water source pipe and the water inlet pipe 15 are connected with one end of the second compression leather box 18. The spray head 13 is installed in the top cover body 12. One end of the water inlet pipe 15 is in communication with the spray head 13.

[0035] When the first compression leather box 17 is compressed to the limit position, the elastic ratchet 25 and the extrusion force of the telescopic wedge 22 increase, the sliding between the inclined surface of the telescopic wedge 22 and the elastic ratchet 25 occurs, the telescopic wedge 22 is forced to retract into the first dial 20, until the telescopic wedge 22 is completely retracted into the first dial 20, the elastic ratchet 25 rotates over the telescopic wedge 22, under the action of the reset coil spring, the first dial 20 quickly rotates, the first compression leather box 17 is pulled open again, the telescopic wedge 22 is also extended under the action of the spring, until the elastic ratchet 25 again abuts against the telescopic wedge 22, and the first compression leather box 17 is compressed, when the second motor 16 reverses, the second rotating disc 24 also repeatedly compresses the second compression leather box 18 by using the second dial 21, the first compression leather box 17 is repeatedly compressed to press the gas into the water injector 7 by using the air inlet pipe 9, so that the hot water rapidly penetrates into the compressed raw material particles, to speed up the extraction effect, when the second compression leather box 18 is compressed, the water is pressed into the spray head 13 through the water inlet pipe 15, when the second compression leather box 18 resets, the water is sucked through the water source pipe, waiting for the next compression, through the arrangement of the gas-liquid supply assembly, the extraction effect can be speeded up, and high-pressure water can be provided to clean the extraction cup 5, the automatic cleaning function is realized, and the automatic coffee extraction effect is achieved.

[0036] The working principle of the present application is as follows: the user puts the coffee raw material into the grinder 6, starts the device, and the device grinds the raw material into corresponding particle size according to the user's selection, the ground coffee raw material falls into the extraction cup 5, the first motor 2 drives the first rotating arm 3 to rotate, the first rotating arm 3 drives the extraction cup 5 to move below the extrusion assembly, the second electric push rod 32 drives the compaction block 33 to move downward, and the ground particle raw material in the extraction cup 5 is compacted by force, and after the raw material is compacted, the coffee extraction work can be started, the first motor 2 moves the extraction cup 5 below the water injector 7 through the first rotating arm 3, the water is transported into the electric heating water pipe 8 and heated, the hot water flows into the extraction cup 5 through the water injector 7, and then the extracted coffee liquid flows out from the bottom of the extraction cup 5, the user uses a cup to receive the extracted coffee liquid, and when a certain flow is reached, the control system stops adding water to the electric heating water pipe 8, and the extraction stops.

[0037] When a round of extraction is completed, the first motor 2 moves the extraction cup 5 above the water tray 10 through the first rotating arm 3, and the multi-stage electric push rod 14 moves the top cover 12 downward to cover the entire extraction cup 5. The servo motor first drives the extraction cup 5 to rotate rapidly, uses the centrifugal force to throw out the slag in the extraction cup 5, and the spray head 13 sprays water downward. The servo motor then drives the extraction cup 5 to rotate slowly to clean the extraction cup 5, and the slag thrown onto the top cover 12 is also washed down. The slag is discharged through the slag discharge pipe 11 at the bottom of the water tray 10. After cleaning, the servo motor drives the extraction cup 5 to rotate rapidly again to throw out the residual water. The multi-stage electric push rod 14 raises the top cover 12 upward. Through the cooperation of the cleaning assembly and the automatic extraction assembly, the automatic cleaning of the extraction cup 5 is realized, and the trouble of manual cleaning is avoided.

[0038] The user places the filter paper in the filter paper box 31 in advance. The filter paper box 31 is placed in the shell 1. The first motor 2 moves the extraction cup 5 above the vacuum machine 30 through the first rotating arm 3. The vacuum machine 30 performs air suction. Since the bottom of the extraction cup 5 is not sealed, the air pressure in the vacuum machine 30 will not decrease. At this time, the pressure sensor cannot detect the decrease in air pressure. The third motor 26 drives the first electric push rod 28 to move above the filter paper box 31 through the second rotating arm 27. The first electric push rod 28 pushes the electric suction cup 29 downward, so that the electric suction cup 29 contacts the filter paper and sucks up the filter paper. Then, the first electric push rod 28 lifts and moves the filter paper above the extraction cup 5, and places the filter paper in the extraction cup 5. The filter paper has sealing properties during movement. After the filter paper seals the bottom of the extraction cup 5, the air pressure in the vacuum machine 30 drops sharply. After the pressure sensor detects the decrease in air pressure, it indicates that the detection paper has been placed in position and can be used to grind coffee raw materials. The vacuum machine 30 stops working. The first motor 2 moves the extraction cup 5 away through the first rotating arm 3.

[0039] The second motor 16 drives the first rotating disc 23 and the second rotating disc 24 to rotate simultaneously. When the second motor 16 rotates forward, the elastic ratchet 25 on the first rotating disc 23 contacts the telescopic wedge block 22 on the first dial 20. The elastic ratchet 25 abuts against the telescopic wedge block 22, and drives the first dial 20 to rotate through the telescopic wedge block 22. When the first dial 20 is driven to rotate, the first compression suitcase 17 is compressed. On the other side, the elastic ratchet 25 on the second rotating disc 24 contacts the telescopic wedge block 22 on the second dial 21. The elastic ratchet 25 can be deflected and will not abut against the telescopic wedge block 22, but will pass the telescopic wedge block 22. The second dial 21 remains stationary. When the second motor 16 reverses, the elastic ratchet 25 on the second rotating disc 24 abuts against the telescopic wedge block 22 on the second dial 21. The second dial 21 is driven to rotate, and the second compression suitcase 18 is compressed. On the other side, the elastic ratchet 25 on the first rotating disc 23 is deflected and passes the telescopic wedge block 22 on the second dial 21. The first dial 20 remains stationary.

[0040] When the first compression leather box 17 is compressed to the limit position, with the increase of the extrusion force of the elastic ratchet 25 and the telescopic wedge 22, the sliding between the inclined surface of the telescopic wedge 22 and the elastic ratchet 25 occurs, the telescopic wedge 22 is forced to retract into the first dial 20, until the telescopic wedge 22 is completely retracted into the first dial 20, the elastic ratchet 25 turns over the telescopic wedge 22, under the action of the reset coil spring, the first dial 20 quickly rotates, the first compression leather box 17 is pulled open again, the telescopic wedge 22 is also extended under the action of the spring, until the elastic ratchet 25 again abuts against the telescopic wedge 22, and the first compression leather box 17 is compressed, when the second motor 16 reverses, the second dial 24 also repeatedly compresses the second compression leather box 18 by using the second dial 21, the first compression leather box 17 is repeatedly compressed to press the gas into the water injector 7 by using the air inlet pipe 9, so that the hot water rapidly penetrates into the compressed raw material particles, to accelerate the extraction effect, when the second compression leather box 18 is compressed, the water is pressed into the spray head 13 by using the water inlet pipe 15, when the second compression leather box 18 resets, the water is sucked by using the water source pipe, waiting for the next compression, through the setting of the gas-liquid supply assembly, the extraction effect can be accelerated, and the high-pressure water can be provided to clean the extraction cup 5, the automatic cleaning function is realized, and the automatic coffee extraction effect is achieved.

[0041] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present examples are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the scope of the claims.

Claims

1. An extraction device for a coffee machine based on speed control, characterized in that: The device includes an outer shell (1), inside which are arranged an automatic extraction component, a grinder (6), an extrusion component, a water injector (7), a cleaning component, and an automatic feeding component. The automatic extraction component includes a first motor (2) and an extraction cup (5). The first motor (2) drives the extraction cup (5) to rotate. The grinder (6) grinds the raw material. The extrusion component compacts the powder. The top of the water injector (7) is connected to an electric hot water pipe (8). The cleaning component cleans the extraction cup (5). The automatic feeding component is used to add filter paper. A gas-liquid supply assembly is provided in the middle of the outer shell (1). The gas-liquid supply assembly includes a second motor (16), a first compression tank (17), a second compression tank (18), and a partition plate (19). The second motor (16) is fixedly installed on the partition plate (19). The first compression tank (17) and the second compression tank (18) are respectively located on both sides of the partition plate (19). One end of the first compression tank (17) and the second compression tank (18) is fixedly installed on the partition plate (19). The first dial (20) is rotatably mounted on the side of the partition plate (19) where the first compression case (17) is installed, and the second dial (21) is rotatably mounted on the side of the partition plate (19) where the second compression case (18) is installed. The first dial (20) and the second dial (21) are provided with a return coil spring at the junction with the partition plate (19). The other end of the first compression case (17) is connected to the first dial (20), and the other end of the second compression case (18) is connected to the second dial (21). Telescopic wedges (22) are slidably installed on the side of the first dial (20) and the second dial (21) away from the partition plate (19). A spring is provided between the two telescopic wedges (22) and the first dial (20) and the second dial (21). The inclined surfaces of the two telescopic wedges (22) face opposite directions. A first turntable (23) and a second turntable (24) are respectively provided on the side of the first compression box (17) and the second compression box (18) away from the partition plate (19). The first turntable (23) and the second turntable (24) are both provided with elastic ratchet teeth (25) on their outer contours. The two elastic ratchet teeth (25) rotate in opposite directions. The first compression box (17) is provided with an air inlet and an air inlet pipe (9). One end of the second compression box (18) is connected to a water source pipe and a water inlet pipe (15).

2. The extraction device for a coffee machine based on speed control according to claim 1, characterized in that: The top of the grinder (6) extends through the outer shell (1), and the extrusion assembly is located on one side of the grinder (6). The extrusion assembly includes a second electric push rod (32) and a compaction block (33), and the compaction block (33) is disposed on the piston rod of the second electric push rod (32).

3. The extraction device for a coffee machine based on speed control according to claim 1, characterized in that: The automatic extraction assembly also includes a first rotating arm (3), which is mounted on a first motor (2). A servo motor is provided at the end of the first rotating arm (3) away from the first motor (2), and the motor shaft of the servo motor is connected to the extraction cup (5).

4. The extraction device for a coffee machine based on speed control according to claim 1, characterized in that: The cleaning assembly includes a water receiving tray (10), a slag discharge pipe (11), a top cover (12), and a pair of multi-stage electric actuators (14). The pair of multi-stage electric actuators (14) are installed upside down on the inner wall of the outer shell (1). The piston rods of the pair of multi-stage electric actuators (14) are connected to the top cover (12). The water receiving tray (10) is located below the top cover (12). The slag discharge pipe (11) is connected to the bottom of the water receiving tray (10), and the bottom of the slag discharge pipe (11) penetrates the outer shell (1).

5. The extraction device for a coffee machine based on speed control according to claim 4, characterized in that: The automatic feeding assembly includes a third motor (26), a second rotating arm (27), a first electric push rod (28), and an electric suction cup (29). The third motor (26) is installed upside down on the inner wall of the outer casing (1). The second rotating arm (27) is connected to the motor shaft of the third motor (26). The first electric push rod (28) is installed at the end of the second rotating arm (27) away from the third motor (26). The electric suction cup (29) is installed on the piston rod of the first electric push rod (28).

6. The extraction device for a coffee machine based on speed control according to claim 5, characterized in that: The automatic feeding assembly also includes a vacuum machine (30) and a filter paper box (31). The vacuum machine (30) is equipped with a pressure sensor, which is connected to the control system via a circuit. The filter paper box (31) is slidably connected to the outer shell (1). Filter paper is placed inside the filter paper box (31). The filter paper box (31) penetrates the outer shell (1). A handle is installed on the side of the filter paper box (31) that extends out of the outer shell (1).

7. The extraction device for a coffee machine based on speed control according to claim 1, characterized in that: The first turntable (23) and the second turntable (24) are both connected to the motor shaft of the second motor (16).

8. The extraction device for a coffee machine based on speed control according to claim 4, characterized in that: One end of the air inlet pipe (9) is connected to the water injector (7), and a spray head (13) is installed inside the top cover (12). One end of the water inlet pipe (15) is connected to the spray head (13).

Images