A device for preparing coffee or beverages

Abstract

The present invention provides a device for preparing coffee or beverage, which belongs to the technical field of beverage brewing devices. The device for preparing coffee or beverage comprises a bracket structure, the bracket structure comprising a left side plate, a right side plate, an upper support plate and a lower support plate, the upper support plate and the lower support plate are fixedly connected to the adjacent ends of the left side plate and the right side plate, and the upper support plate is located on the upper side of the lower support plate; a transmission structure, the transmission structure comprises a transmission joint, a transmission screw, a transmission screw nut, a transmission brewing tube bracket, a transmission joint fixing pin, a first bearing, a second bearing, and a first motion guide rail, by using the transmission structure of the device to drive the extraction and brewing structure to perform a powder pressing operation on the coffee powder or beverage powder in the brewing chamber, and at the same time, after brewing is completed, the residue in the brewing chamber is cleaned by the slag removing and discharging structure of the device. Compared with other brewers, since the brewing tube adopts an upright up and down movement, the powder pressing force is more precise and the product speed is better; the movement speed is faster, and the time required for product is less.

Description

Technical Field

[0001] The present invention belongs to the technical field of beverage brewing equipment, and in particular relates to an equipment for preparing coffee or beverages. Background Art

[0002] Nowadays, there are more and more types of instant coffee or beverages. Instant coffee is easy to use and can be brewed into coffee beverages by just brewing with water. When brewing coffee or beverages, a brewing machine is used to brew the beverage, which is simpler and more convenient to operate.

[0003] Publication number "CN214433704U" discloses "a beverage brewing machine," comprising a kettle body, a power base, a main control circuit board, and a heating device. The kettle body is provided with a brewing chamber, the brewing chamber being provided with a maximum water level line, the brewing chamber being provided with a water supply device and a brewing container, the water supply device being located below the brewing container, the water supply device comprising a flow guide hood, an agitator, and a drive device for rotating the agitator, the flow guide hood comprising a flow guide chamber and a positioning ring supporting the flow guide chamber, the flow guide chamber being provided with a guide outlet at the top, an opening at the bottom, the agitator comprising a stirring blade, a rotating wheel, and a bracket, the stirring blade being located within the flow guide chamber, a water retaining ring being provided between the stirring blade and the opening, and a water inlet hole being provided in the middle of the water retaining ring. The beverage brewing machine of the present invention has high water supply efficiency, good brewing effect, low noise, low cost, and good visual effect when brewing various beverages.

[0004] The above patent has high water supply efficiency, good brewing effect, low noise, low cost, and good visual effect when brewing various beverages; however, the above patent cannot achieve pressed powder brewing of beverages when brewing beverages. At the same time, after the brewing is completed using the above device, the beverage residue remaining in the device is not easy to clean, and the device needs to be disassembled and cleaned one by one. Summary of the Invention

[0005] The object of the present invention is to provide a device for preparing coffee or beverages, aiming to solve the problem in the prior art that the above-mentioned patent cannot achieve the compressed powder brewing of beverages when brewing beverages. At the same time, after the brewing is completed, the beverage residue remaining in the device is inconvenient to clean and the device needs to be disassembled and cleaned one by one.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An apparatus for preparing coffee or a beverage, comprising:

[0008] A bracket structure, the bracket structure comprising a left side plate, a right side plate, an upper support plate and a lower support plate, the upper support plate and the lower support plate are both fixedly connected to adjacent ends of the left side plate and the right side plate, and the upper support plate is located above the lower support plate;

[0009] The transmission structure includes a transmission joint, a transmission screw, a transmission screw nut, a transmission brewing tube bracket, a transmission joint fixing pin, a first bearing, a second bearing, a first moving guide rail and a second moving guide rail, wherein a plurality of transmission joint fixing pins are provided, the first bearing and the second bearing are both fixedly connected to the upper support plate, the transmission screw is rotatably connected to the circumferential inner wall of the first bearing and the second bearing, the transmission screw is rotatably connected to the lower support plate, the first moving guide rail and the second moving guide rail are both fixedly connected to the adjacent ends of the upper support plate and the lower support plate, the transmission brewing tube bracket is slidably connected to the circumferential surface of the first moving guide rail and the second moving guide rail, the transmission screw nut is fixedly connected to the transmission brewing tube bracket through a plurality of transmission joint fixing pins, the transmission screw nut is threadedly connected to the circumferential surface of the transmission screw, and the transmission joint is fixedly connected to the upper part of the circumferential surface of the transmission screw;

[0010] The extraction brewing structure includes an upper brewing head, a brewing cylinder, a lower brewing head, a water inlet connector, and a water inlet pipe. The upper brewing head is arranged in the upper support plate, the brewing cylinder is fixedly connected to the upper end of the transmission brewing cylinder bracket, the lower brewing head is slidably connected in the brewing cylinder, the water inlet connector is fixedly connected to one side end of the right side plate, one end of the water inlet pipe is connected to the water inlet connector, and the other end of the water inlet pipe is connected to the brewing cylinder.

[0011] a powder guide funnel, the powder guide funnel being rotatably connected to adjacent ends of the left plate and the right plate; and

[0012] The slag removing and discharging structure includes a lower brewing head push-pull rod, a lower brewing head permanent magnet, a push-pull rod bracket, a slag removing rod, a slag removing rod spring, a push-pull rod bracket fixed shaft and a slag removing assembly, the lower brewing head push-pull rod is fixedly connected to the lower end of the lower brewing head, the lower brewing head permanent magnet is fixedly connected to the lower end of the lower brewing head push-pull rod, the push-pull rod bracket is rotatably connected to the lower support plate through the push-pull rod bracket fixed shaft, the slag removing rod is slidably connected to the left side plate, the slag removing rod spring is sleeved on the circumferential surface of the slag removing rod, and the slag removing assembly is connected to the brewing cylinder.

[0013] As a preferred solution of the present invention, the slag removing assembly includes a slag removing rod rotatably connected to the brewing cylinder, the slag removing rod spring is sleeved on the surface of the slag removing rod, the slag removing rod spring is connected to the brewing cylinder, and the slag removing rod fixing ring is fixedly connected to the lower surface of the slag removing rod.

[0014] As a preferred solution of the present invention, a second bearing gasket and a first bearing gasket are fixedly connected in the upper support plate, the first bearing gasket is arranged on the upper side of the first bearing, the first bearing gasket is arranged on the lower side of the second bearing, and the second bearing gasket and the first bearing gasket are both arranged on the circumferential surface of the transmission screw.

[0015] As a preferred solution of the present invention, the upper end of the upper support plate is slidably connected to an upper brewing head fixing card, the upper brewing head fixing card is connected to the upper brewing head, the circumferential surface of the upper brewing head is sleeved with an upper brewing head sealing ring, and the lower end of the upper brewing head is fixedly connected to an upper brewing head filter.

[0016] As a preferred solution of the present invention, the lower brewing head push-pull rod is slidably connected to the brewing cylinder, the lower end of the lower brewing head is provided with a lower brewing head watertight seal ring, and the circumferential surface of the lower brewing head is sleeved with a lower brewing head sealing ring.

[0017] As a preferred solution of the present invention, a torque spring is provided at the connection between the powder guiding funnel and the right side plate.

[0018] As a preferred solution of the present invention, a slag push rod clamping ring is provided on the circumferential surface of the slag push rod spring, and the slag push rod clamping ring is provided on the lower side of the slag push rod spring.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In this solution, the transmission structure of the device is used to drive the extraction and brewing structure to press the coffee powder or beverage powder in the brewing chamber. At the same time, after brewing is completed, the residue in the brewing chamber is cleaned by the residue removal structure of the device. Compared with traditional beverage brewing machines, it is easier to clean the residue and reduce the residual residue of coffee powder or beverage powder brewing.

[0021] 2. In this solution, the lower brewing head permanent magnet at the lower end of the push-pull rod of the lower brewing head contacts the push-pull rod bracket, pushing the lower brewing head together. At this time, the brewing cylinder continues to move downward, and the lower brewing head gradually moves to the upper part of the lower brewing head cavity until it moves to the top, completely pushing the coffee grounds cake out of the cavity of the brewing cylinder; after the coffee grounds cake is pushed out of the brewing cylinder, the brewing cylinder continues to move downward, pushing the push-pull rod bracket to move downward, and the other end is tilted to push the grounds push rod to move upward, and the grounds push rod pushes the grounds push rod to rotate, pushing out the grounds cake pushed out of the upper part of the brewing cylinder. After the grounds are removed, the brewing cylinder moves upward, and after the grounds push rod rotates, it is reset by the grounds push rod spring.

[0022] 3. This solution adopts a transmission structure design that can be quickly removed. When cleaning or maintenance is required, it can be directly removed without disassembling the entire coffee machine.

[0023] 4. In this solution, since the brewing cylinder adopts an upright up and down linear motion mode, there is no card point during the movement, and the transmission structure can operate quickly, driving the brewing cylinder to move up and down quickly, saving the time of the brewing cylinder moving up and down during the brewing process. Compared with other brewing equipment, the brewing cylinder needs to be rotated back and forth, which saves more time, has a faster product speed, and has fewer failures and lower maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 A perspective view of the present invention;

[0026] Figure 2 An exploded view of the present invention;

[0027] Figure 3 is a first cross-sectional view of the present invention;

[0028] Figure 4 It is a first partial stereoscopic view of the present invention;

[0029] Figure 5 It is a second partial stereoscopic view of the present invention;

[0030] Figure 6 is a second cross-sectional view of the present invention;

[0031] Figure 7 This is an exploded view of the slag removing assembly described in the present invention.

[0032] In the figure: 1. Left side plate; 2. Right side plate; 3. Upper support plate; 4. Lower support plate; 5. Transmission joint; 6. Transmission screw; 7. Transmission screw nut; 8. Transmission brewing tube bracket; 9. Transmission joint fixing pin; 10. First bearing; 11. Second bearing; 12. First bearing gasket; 13. Second bearing gasket; 14. Bearing retaining ring; 15. Powder guide funnel; 16. Upper brewing head; 17. Upper brewing head filter; 18. Upper brewing head sealing ring; 19. Upper brewing head fixing card; 20. Brewing tube; 2 1. Lower brewing group; 22. Lower brewing group filter; 23. Lower brewing group sealing ring; 24. Lower brewing group watertight ring; 25. Lower brewing group push-pull rod; 26. Lower brewing group permanent magnet; 27. Push-pull rod bracket; 28. Water inlet connector; 29. ​​Water inlet pipe; 30. Slag prying rod; 31. Slag prying rod spring; 32. Slag prying rod; 33. Slag prying rod spring; 34. Slag prying rod fixing ring; 35. Slag prying rod push-rod fixing ring; 37. Push-pull rod bracket fixing shaft; 38. First moving guide rail; 39. Second moving guide rail. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0034] See also Figure 1-Figure 7 , the present invention provides the following technical solutions:

[0035] An apparatus for preparing coffee or a beverage, comprising:

[0036] The bracket structure includes a left side plate 1, a right side plate 2, an upper support plate 3 and a lower support plate 4. The upper support plate 3 and the lower support plate 4 are fixedly connected to the adjacent ends of the left side plate 1 and the right side plate 2, and the upper support plate 3 is located on the upper side of the lower support plate 4;

[0037] The transmission structure includes a transmission joint 5, a transmission screw 6, a transmission screw nut 7, a transmission brewing tube bracket 8, a transmission joint fixing pin 9, a first bearing 10, a second bearing 11, a first motion guide rail 38 and a second motion guide rail 39. There are multiple transmission joint fixing pins 9. The first bearing 10 and the second bearing 11 are both fixedly connected to the upper support plate 3. The transmission screw 6 is rotatably connected to the circumferential inner walls of the first bearing 10 and the second bearing 11. The transmission screw 6 is rotatably connected to the lower support plate 4. The first motion guide rail 38 and the second motion guide rail 39 are both fixedly connected to the adjacent ends of the upper support plate 3 and the lower support plate 4. The transmission brewing tube bracket 8 is slidably connected to the circumferential surfaces of the first motion guide rail 38 and the second motion guide rail 39. The transmission screw nut 7 is fixedly connected to the transmission brewing tube bracket 8 through multiple transmission joint fixing pins 9. The transmission screw nut 7 is threadedly connected to the circumferential surface of the transmission screw 6. The transmission joint 5 is fixedly connected to the upper circumferential surface of the transmission screw 6.

[0038] The extraction brewing structure includes an upper brewing head 16, a brewing cylinder 20, a lower brewing head 21, a water inlet connector 28, and a water inlet pipe 29. The upper brewing head 16 is arranged in the upper support plate 3, the brewing cylinder 20 is fixedly connected to the upper end of the transmission brewing cylinder bracket 8, the lower brewing head 21 is slidably connected to the brewing cylinder 20, the water inlet connector 28 is fixedly connected to one side end of the right side plate 2, one end of the water inlet pipe 29 is connected to the water inlet connector 28, and the other end of the water inlet pipe 29 is connected to the brewing cylinder 20.

[0039] The powder guiding funnel 15 is rotatably connected to the adjacent ends of the left plate 1 and the right plate 2; and a slag removing and discharging structure, which includes a lower brewing head push-pull rod 25, a lower brewing head permanent magnet 26, a push-pull rod bracket 27, a slag removing push rod 30, a slag removing push rod spring 31, a push-pull rod bracket fixed shaft 37 and a slag removing assembly, the lower brewing head push-pull rod 25 is fixedly connected to the lower end of the lower brewing head 21, the lower brewing head permanent magnet 26 is fixedly connected to the lower end of the lower brewing head push-pull rod 25, the push-pull rod bracket 27 is rotatably connected to the lower support plate 4 through the push-pull rod bracket fixed shaft 37, the slag removing push rod 30 is slidably connected to the left plate 1, the slag removing push rod spring 31 is sleeved on the circumferential surface of the slag removing push rod 30, and the slag removing assembly is connected to the brewing cylinder 20.

[0040] In a specific embodiment of the present invention, a rectangular hole is opened on the surface of the right side plate 2 in the bracket structure for the water inlet pipe 29 to pass through. The water inlet pipe 29 is a hose. When the transmission brewing tube bracket 8 moves up and down, the water inlet pipe 29 will not be separated from the brewing tube 20. The front part of the left side plate 1 is provided with two rod-shaped parts connected to the slag push rod 30. The transmission joint 5 in the transmission structure is connected to the driving device. The operation of the driving device drives the transmission joint 5 to rotate. The transmission joint 5 drives the transmission screw 6 to rotate. When the transmission screw 6 rotates, it drives the transmission brewing tube bracket 8 to slide on the surface of the first motion guide rail 38 and the second motion guide rail 39. The first motion guide rail 38 and the second motion guide rail 39 play a role of limiting. The upper brewing head 16 in the extraction brewing structure is used to output brewing. After the brewed beverage and the powder pressing operation, the lower brewing head 21 is slidably connected in the brewing cylinder 20, and the lower brewing head 21 is closed with the brewing cylinder 208 through the lower brewing head water sealing ring 24. The water inlet joint 28 inputs hot water into the brewing cylinder 20 through the water inlet pipe 29. The water inlet joint 28 is connected to the water pump, and the coffee powder or beverage powder in the brewing cylinder 20 is brewed by the pressure pumped by the water pump. The powder guide funnel 15 is rotatably connected to the left plate 1 and the right plate 2. The powder guide funnel 15 is used to add coffee powder or beverage powder. The coffee powder or beverage powder slides along the inner wall of the powder guide funnel 15 into the brewing cylinder 20; after the coffee powder or beverage powder is added to the brewing cylinder 20, the transmission structure is controlled to drive the brewing cylinder 20 to move upward, and the lower brewing head 21 and the upper brewing head 16 are used to press the coffee powder or beverage powder in the brewing cylinder 20. The powder is compacted to complete the powder pressing operation. The upper brewing head 16 and the lower brewing head 21 are located in the brewing cylinder 20, so that a closed chamber is formed in the brewing cylinder 20. At this time, the water inlet joint 28 and the water inlet pipe 29 are controlled to fill hot water into the lower brewing head 21 to brew the powder. The lower brewing head permanent magnet 26 connected to the lower end of the lower brewing head push-pull rod 25 in the slag removal structure contacts and adsorbs the push-pull rod bracket 27, and the push-pull rod bracket 27 is rotatably connected to the lower support plate 4 through the push-pull rod bracket fixed shaft 37. The push-pull rod bracket 27 rotates with the push-pull rod bracket fixed shaft 37. When the connection part between the push-pull rod bracket 27 and the lower brewing head permanent magnet 26 is tilted upward, the lower brewing head permanent magnet 26 and the lower brewing head push-pull rod 25 are driven to move upward, and the lower brewing head push-pull rod 25 pushes The lower brewing head 21 moves upward in the brewing cylinder 20. At this time, the lower brewing head watertight sealing ring 24 is no longer connected to the brewing cylinder 20. Under the action of the transmission structure, the transmission screw 6 rotates in the opposite direction, driving the brewing cylinder 20 to move downward. When the brewing cylinder 20 and the powder guiding funnel 15 are no longer in contact, the powder guiding funnel 15 returns to its original position under the action of the torque spring, preparing for the next powder receiving and guiding. The brewing cylinder 20 continues to move downward, and the lower brewing head permanent magnet 26 at the lower end of the lower brewing head push-pull rod 25 contacts the push-pull rod bracket 27, pushing the lower brewing head 21 together. At this time, the brewing cylinder 20 continues to move downward, and the lower brewing head 21 gradually moves to the upper part of the lower brewing head 21 cavity until it moves to the top, completely pushing the coffee grounds cake out of the cavity of the brewing cylinder 20.After the coffee grounds cake is pushed out of the brewing cylinder 20, the brewing cylinder 20 drives the lower brewing head push-pull rod 25 to continue moving downward. Through the seesaw effect, the grounds push rod 30 moves upward, pushing the grounds lever 32 to rotate, peeling off the coffee grounds and dropping them into the waste grounds box. The grounds cake pushed out from the upper part of the brewing cylinder 20 is pushed out. After the grounds lever 32 rotates, it is reset by the grounds lever spring 33, which is also a torque spring.

[0041] Preferably, a bearing snap ring 14 is provided at the upper end of the upper support plate 3 , and the bearing snap ring 14 is connected to the transmission screw 6 to serve as a limit.

[0042] For details, please refer to Figure 1-Figure 7 The slag removing assembly includes a slag removing rod 32 rotatably connected to the brewing cylinder 20 , a slag removing rod spring 33 sleeved on the surface of the slag removing rod 32 , the slag removing rod spring 33 is connected to the brewing cylinder 20 , and a slag removing rod fixing ring 34 is fixedly connected to the lower surface of the slag removing rod 32 .

[0043] In this embodiment: the slag prying rod 32 is rotatably connected to the brewing cylinder 20, one end of the slag prying rod spring 33 is fixed to the slag prying rod 32, and the other end is connected to the brewing cylinder 20, which plays a reset role, and the slag prying rod fixing ring 34 is fixed to the lower end of the slag prying rod 32, and the slag prying rod spring 33 is located inside the slag prying rod 32.

[0044] For details, please refer to Figure 1-Figure 7 The second bearing gasket 13 and the first bearing gasket 12 are fixedly connected to the upper support plate 3. The first bearing gasket 12 is arranged on the upper side of the first bearing 10, and the first bearing gasket 12 is arranged on the lower side of the second bearing 11. The second bearing gasket 13 and the first bearing gasket 12 are both arranged on the circumferential surface of the transmission screw 6.

[0045] In this embodiment, the second bearing washer 13 and the first bearing washer 12 serve to limit the first bearing 10 and the second bearing 11 .

[0046] For details, please refer to Figure 1-Figure 7 The upper end of the upper support plate 3 is slidably connected to the upper brewing head fixing card 19, the upper brewing head fixing card 19 is connected to the upper brewing head 16, the circumferential surface of the upper brewing head 16 is sleeved with an upper brewing head sealing ring 18, and the lower end of the upper brewing head 16 is fixedly connected to the upper brewing head filter 17.

[0047] In this embodiment, the upper brewing head fixing card 19 serves to limit the upper brewing head 16, and the upper brewing head sealing ring 18 is used to improve the sealing performance of the connection between the upper brewing head 16 and the brewing cylinder 20. When the upper brewing head 16 outputs the brewed coffee or beverage, the upper brewing head filter 17 filters the coffee or beverage to prevent coffee grounds or beverage grounds from being output through the channel in the upper brewing head 16.

[0048] For details, please refer to Figure 1-Figure 7 The lower brewing head push-pull rod 25 is slidably connected to the transmission brewing tube bracket 8. The lower end of the lower brewing head 21 is provided with a lower brewing head watertight ring sealing ring 24, and the circumferential surface of the lower brewing head 21 is sleeved with a lower brewing head sealing ring 23.

[0049] In this embodiment, a sealing hole matching the lower brewing head watertight ring sealing ring 24 is opened in the brewing cylinder 20. The lower brewing head sealing ring 23 is used to improve the sealing performance between the lower brewing head 21 and the brewing cylinder 20. The lower brewing head watertight ring sealing ring 24 is used to connect with and seal the sealing hole.

[0050] Preferably, the upper end of the lower brewing head 21 is fixedly connected to a lower brewing head filter 22 for filtering.

[0051] For details, please refer to Figure 1-Figure 7 A torque spring is provided at the connection between the powder guide funnel 15 and the right side plate 2.

[0052] In this embodiment, the torque spring is used to reset the powder guiding funnel 15 after rotation.

[0053] For details, please refer to Figure 1-Figure 7 A slag push rod snap ring 35 is provided on the circumferential surface of the slag push rod spring 31 , and the slag push rod snap ring 35 is provided on the lower side of the slag push rod spring 31 .

[0054] In this embodiment, the slag push rod clamping ring 35 matches the slag push rod spring 31 to prevent the lower end of the slag push rod spring 31 from deforming and affecting its use.

[0055] The working principle and use process of the present invention:

[0056] 1. Powder receiving stage: When receiving powder, it is the default initial state of the brewer. At this time, the brewing cylinder 20 is driven by the transmission brewing cylinder bracket 8 to move to the bottom of the powder guide funnel 15. Moreover, the lower brewing head 21 is attracted by the end in contact with the push-pull rod bracket 27 under the suction force of the lower brewing head push-pull rod 25 and the lower brewing head permanent magnet 26 below, pulling the lower brewing head 21 to the bottom of the brewing cylinder 20. At this time, the brewing cylinder 20 and the lower brewing head 21 form a cavity with an open top. Coffee powder or ground tea leaves fall into the cavity of the brewing cylinder 20 through the powder guide funnel 15. After the coffee powder is loaded into the cavity, the powder receiving stage is completed;

[0057] 2. Powder pressing stage: The cavity with the upper opening of the brewing cylinder 20 after receiving the coffee powder moves upward under the action of the transmission structure. At this time, the lower brewing head permanent magnet 26 and the push-pull rod bracket 27 are separated. Since they are attracted by magnetic force, no other action is required to separate them. The right side of the brewing cylinder 20 slides relative to the right side of the powder guide funnel 15, pushing the powder guide funnel 15 away from the top of the brewing cylinder 20, so that the brewing cylinder 20 will not hit the powder guide funnel 15 when it continues to move upward, and there is no The brewing cylinder 20 moves upward while pushing away the powder guide funnel 15, reaching the position of contacting the upper brewing head 16. The upper brewing head 16 enters the cavity above the brewing cylinder 20, and together with the lower brewing head 21 and the brewing cylinder 20, forms a sealed brewing cavity. The brewing cylinder 20 continues to move upward, compacting the loose coffee powder or other beverage in the brewing cylinder 20. In addition, the lower brewing head watertight ring 24 of the lower brewing head 21 and the bottom of the brewing cylinder 20 are completely sealed.

[0058] 3. Brewing stage: The hot water required for brewing coffee, under the action of the water pump, passes through the water inlet connector 28 and the water inlet pipe 29, and enters the lower brewing head 21 from the inlet below the brewing cylinder 20. After passing through the lower brewing head 21, it evenly enters the compacted coffee powder through the pores of the lower brewing head filter 22. Under the action of the water pump pressure, the hot water passes through the coffee powder, extracting the required substances contained in the coffee powder. After passing through the upper brewing head filter 17, it comes out through the coffee outlet of the upper brewing head 16 and reaches the beverage outlet of the coffee machine through the corresponding pipeline. Since the transmission screw 6 has a self-locking feature, the brewing cylinder 20 will not automatically move downward during the brewing process.

[0059] 4. Slag discharge stage: Slag discharge is divided into two steps.

[0060] Pushing the grounds, pushing the extracted coffee powder out of the brewing cylinder. Under the action of the transmission structure, the transmission screw 6 rotates in the opposite direction to drive the brewing cylinder 20 to move downward. When the brewing cylinder 20 and the powder guiding funnel 15 are no longer in contact, the powder guiding funnel 15 returns to its original position under the action of the torque spring, preparing for the next powder receiving and guiding. The brewing cylinder 20 continues to move downward, and the lower brewing head permanent magnet 26 of the lower brewing head push-pull rod 25 contacts the push-pull rod bracket 27 and pushes the lower brewing head 21 together. At this time, the brewing cylinder 20 continues to move downward, and the lower brewing head 21 gradually moves to the upper part of the brewing cylinder 20 cavity until it moves to the top, completely pushing the coffee grounds cake out of the brewing cylinder 20 cavity.

[0061] The coffee grounds are removed from the brewing cylinder 20 by removing the pushed-out coffee grounds. The pushed-out coffee grounds cake has now left the brewing cylinder 20 and is above the lower brewing head 21. At this time, the brewing cylinder 20 continues to move downward with the lower brewing head push-pull rod 25 and the lower brewing head permanent magnet 26. Since the push-pull rod bracket 27 and the lower support plate 4 are in a seesaw structure, the lower brewing head permanent magnet 26 moves downward to tilt the other end of the push-pull rod bracket 27, and the other end pushes the prying rod 30 to move upward. The prying rod 30 contacts the inclined surface of the edge of the prying rod 32, converting the upward movement into a rotational movement. A fixed snap ring is provided under the shaft of the prying rod 32, which prevents the prying rod 32 from moving up and down. Under the upward force of the prying rod 30, the prying rod 32 rotates, pushing the coffee grounds cake off from above the lower brewing head 21 and dropping it to the discharge port of the coffee machine. In the box, during the process of removing the grounds, the transmission structure drives the brewing chamber to continue to move downward. Since the permanent magnet 26 of the lower brewing head is in contact with the bottom end of the brewing cylinder 20, the lower brewing head 21 is flush with the upper outlet of the brewing cylinder 20 and does not continue to protrude. In order to enable the lower brewing head 21 to completely push out the coffee grounds cake, the force of the grounds push rod spring 31 is greater than the friction between the coffee grounds cake and the inner wall of the brewing cylinder 20. Therefore, the lower brewing head sealing ring 23 and the inside of the brewing cylinder 20 are only in contact, preventing the coffee grounds from falling to the bottom of the brewing cylinder 20 with only a small resistance. The entire seesaw structure is the core part of this design. The beveled end of the seesaw moves downward, driving the bevel of the grounds push rod 32 to ensure that the movement distance of the push rod can continue to increase during the downward movement, thereby being able to continue to drive the grounds push rod 32 to move and remove the coffee grounds cake;

[0062] 5. Restoring the initial state: After the slag removal is completed, the brewing cylinder 20 moves upward, and the slag removal rod 32 returns to its initial position under the action of the slag removal rod spring 33. The push-pull rod bracket 27 returns to a horizontal state under the action of the slag removal push rod spring 31 and the slag removal push rod 30. At this time, the contact surface between the lower brewing head permanent magnet 26 and one end of the push-pull rod bracket 27 is the largest, and the suction force is the largest. The brewing cylinder 20 continues to move upward, and the lower brewing head push-pull rod 25 drives the lower brewing head 21 to return to the bottom end of the inner cavity of the brewing cylinder 20. When the brewing cylinder 20 moves to the powder receiving position, the equipment returns to the initial state.

[0063] The transmission structure of the device drives the extraction and brewing structure to press the coffee powder or beverage powder in the brewing chamber. At the same time, after brewing is completed, the residue in the brewing chamber is cleaned by the residue removal structure of the device. Compared with traditional beverage brewing machines, it is easier to clean the residue and reduce the residual residue of coffee powder or beverage powder brewing.

[0064] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A device for preparing coffee, characterized in that include: A bracket structure, the bracket structure comprising a left side plate, a right side plate, an upper support plate and a lower support plate, the upper support plate and the lower support plate are both fixedly connected to adjacent ends of the left side plate and the right side plate, and the upper support plate is located above the lower support plate; The transmission structure includes a transmission joint, a transmission screw, a transmission screw nut, a transmission brewing tube bracket, a transmission joint fixing pin, a first bearing, a second bearing, a first moving guide rail and a second moving guide rail, wherein a plurality of transmission joint fixing pins are provided, the first bearing and the second bearing are both fixedly connected to the upper support plate, the transmission screw is rotatably connected to the circumferential inner wall of the first bearing and the second bearing, the transmission screw is rotatably connected to the lower support plate, the first moving guide rail and the second moving guide rail are both fixedly connected to the adjacent ends of the upper support plate and the lower support plate, the transmission brewing tube bracket is slidably connected to the circumferential surface of the first moving guide rail and the second moving guide rail, the transmission screw nut is fixedly connected to the transmission brewing tube bracket through a plurality of transmission joint fixing pins, the transmission screw nut is threadedly connected to the circumferential surface of the transmission screw, and the transmission joint is fixedly connected to the upper part of the circumferential surface of the transmission screw; The extraction brewing structure includes an upper brewing head, a brewing cylinder, a lower brewing head, a water inlet connector and a water inlet pipe. The upper brewing head is arranged in the upper support plate, the brewing cylinder is fixedly connected to the upper end of the transmission brewing cylinder bracket, the lower brewing head is slidably connected in the brewing cylinder, the water inlet connector is fixedly connected to one side end of the right side plate, the water inlet connector is connected to the water pump, one end of the water inlet pipe is connected to the water inlet connector, and the other end of the water inlet pipe is connected to the brewing cylinder. The powder guiding funnel is rotatably connected to the adjacent ends of the left plate and the right plate; and a slag removing and discharging structure, which includes a lower brewing head push-pull rod, a lower brewing head permanent magnet, a push-pull rod bracket, a slag removing rod, a slag removing rod spring, a push-pull rod bracket fixed shaft and a slag removing assembly, the lower brewing head push-pull rod is fixedly connected to the lower end of the lower brewing head, the lower brewing head permanent magnet is fixedly connected to the lower end of the lower brewing head push-pull rod, the push-pull rod bracket is rotatably connected to the lower support plate through the push-pull rod bracket fixed shaft, the slag removing rod is slidably connected to the left plate, the slag removing rod spring is sleeved on the circumferential surface of the slag removing rod, and the slag removing assembly is connected to the brewing cylinder.

2. The device for preparing coffee according to claim 1, characterized in that: The slag removing assembly includes a slag removing rod rotatably connected to the brewing cylinder, a slag removing rod spring sleeved on the surface of the slag removing rod, the slag removing rod spring is connected to the brewing cylinder, and the slag removing rod fixing clamp is fixedly connected to the lower surface of the slag removing rod.

3. The device for preparing coffee according to claim 2, characterized in that: The upper support plate is fixedly connected with a second bearing gasket and a first bearing gasket. The first bearing gasket is arranged on the upper side of the first bearing, and the first bearing gasket is arranged on the lower side of the second bearing. The second bearing gasket and the first bearing gasket are both arranged on the circumferential surface of the transmission screw.

4. The device for preparing coffee according to claim 3, characterized in that: The upper end of the upper support plate is slidably connected to an upper brewing head fixing card, the upper brewing head fixing card is connected to the upper brewing head, the circumferential surface of the upper brewing head is sleeved with an upper brewing head sealing ring, and the lower end of the upper brewing head is fixedly connected to an upper brewing head filter.

5. The device for preparing coffee according to claim 4, characterized in that: The lower brewing head push-pull rod is slidably connected to the transmission brewing tube bracket, the lower end of the lower brewing head is provided with a lower brewing head watertight ring, and the circumferential surface of the lower brewing head is sleeved with a lower brewing head sealing ring.

6. The device for preparing coffee according to claim 5, characterized in that: A torque spring is provided at the connection between the powder guiding funnel and the right side plate.

7. The device for preparing coffee according to claim 6, characterized in that A slag push rod clamping ring is provided on the circumferential surface of the slag push rod spring, and the slag push rod clamping ring is arranged on the lower side of the slag push rod spring.

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