A high-pressure swing-stirring beverage extraction device

Abstract

The present invention discloses a beverage extraction device with high-pressure swinging and stirring, wherein a stirring extraction device, a high-pressure extraction device, and an automatic water outlet device are provided in a shell. The middle portion of the driving stirring rod is fixedly mounted on a flexible sealing connector, the upper portion of the driving stirring rod extends into the extraction cup assembly and is fixedly connected to the barrel, the lower end of the driving stirring rod is transmission-connected to the eccentric connector, and the barrel rotates around the axial direction with the flexible sealing connector as a fulcrum; the first end of the water outlet lever is transmission-connected to the water outlet cylinder, and the second end is transmission-connected to the water outlet check valve; one end of the water outlet solenoid valve is connected to the water outlet cylinder, and the other end is connected to the high-pressure extraction device; the water outlet lever is driven by the water outlet cylinder and pushes the water outlet check valve to move, so that the water outlet check valve opens or seals the water outlet hole. The device simulates manual stirring action, improves the uniformity of the extraction process, further increases the cold extraction speed, fully extracts the extract, and improves the taste of the beverage.

Description

Technical Field

[0001] The present invention relates to the technical field of beverage extraction equipment, in particular to a high-pressure swinging and stirring beverage extraction equipment. Background Art

[0002] Coffee powder and tea leaves need to be obtained through brewing. In order to accelerate the fusion of coffee powder and tea leaves with water, hot water is often used for brewing. Therefore, only hot coffee and hot tea can be drunk when drinking. If cold drinks such as cold coffee and cold tea with different tastes are needed, they need to be cooled and refrigerated, but this method will cause the drinks to be in contact with air for a long time, affecting the taste. Or ice cubes can be added directly, but as the ice cubes melt, the drinks will be diluted, which will also affect the taste. For this reason, people use room temperature water or cold water to cold-brew coffee powder or tea leaves, and cold brew coffee and cold brew tea are born.

[0003] Since extraction with room temperature water or cold water often requires an extraction process of 7 to 12 hours, resulting in a long production time and low efficiency. In addition, during the extraction process, it is also exposed to the air for a long time, which is prone to oxidation, resulting in a change in taste. The Chinese invention patent: CN202310330905.4, a high-pressure vibration extraction beverage equipment and an extraction method thereof, drives a barrel filled with coffee powder or tea leaves to vibrate through a vibration extraction device, and repeatedly vacuums and inflates the extraction chamber through the high-pressure extraction device, so that water repeatedly impacts the coffee powder or tea leaves to increase the cold extraction speed. Since the barrel in this patent vibrates only under the drive of the vibration extraction device, its amplitude is small and it is difficult to cover the water in the entire extraction chamber. Therefore, the water concentration close to the barrel is high, and the water concentration far away from the barrel is low. In addition, the high-concentration water repeatedly impacts the coffee powder or tea leaves, while the low-concentration liquid has difficulty entering the barrel to impact and dissolve the coffee powder or tea leaves. This results in that when the water concentration near the barrel reaches the equilibrium point, the extraction speed decreases or even stops, and the coffee powder or tea leaves cannot be completely extracted, the extraction degree is insufficient, and thus the taste is affected.

[0004] On the other hand, after the extraction is completed, this patent requires the entire machine to be picked up and the drink to be poured out, which is very inconvenient to operate. At the same time, when cleaning, the entire machine also needs to be picked up for cleaning, which is easy to be invaded by liquid, causing the electronic components installed inside to be prone to short circuits and failures. Therefore, it is necessary to improve it. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a high-pressure swinging and stirring beverage extraction equipment to simulate manual stirring action, improve the uniformity of the extraction process, further increase the cold extraction speed, fully extract the extract, and improve the taste of the beverage.

[0006] To achieve the above-mentioned object, the technical solution adopted by the present invention is: a high-pressure swing stirring beverage extraction device, comprising a housing and an extraction installation tank with an upward opening provided on the upper portion of the housing, a water receiving box provided below the front side of the extraction installation tank, and a stirring extraction device, a high-pressure extraction device and an automatic water discharge device provided in the housing.

[0007] The stirring extraction device includes an extraction cup assembly, a stirring extraction mechanism and a barrel for containing the material to be extracted. The outer wall of the barrel is provided with a plurality of filtering holes. The extraction cup assembly is movably mounted in the extraction mounting groove, and the barrel is arranged in the extraction cup assembly.

[0008] The stirring extraction mechanism includes a drive motor, an eccentric connector, a drive stirring rod, and a flexible sealing connector. A mounting hole is provided at the bottom of the extraction cup assembly, the flexible sealing connector is disposed in the mounting hole, the drive motor is fixedly mounted below the flexible sealing connector, the eccentric connector is eccentrically mounted on the output shaft of the drive motor, the middle portion of the drive stirring rod is fixedly mounted on the flexible sealing connector, the upper portion of the drive stirring rod extends into the extraction cup assembly and is fixedly connected to the barrel, the lower end of the drive stirring rod is transmission-connected to the eccentric connector, and the barrel rotates around the axial direction with the flexible sealing connector as a fulcrum;

[0009] The high-pressure extraction device includes a positive-pressure airway, a negative-pressure airway, and a high-pressure power assembly. The first ends of the positive-pressure airway and the negative-pressure airway are respectively connected to the extraction cup assembly, and the second ends of the positive-pressure airway and the negative-pressure airway are respectively connected to the high-pressure power assembly.

[0010] The automatic water outlet device includes a water outlet solenoid valve, a water outlet one-way valve, a water outlet lever and a water outlet cylinder. A water outlet hole is provided on the front side of the bottom of the extraction cup assembly. The water outlet one-way valve is provided in the water outlet hole. The water outlet lever is swingably installed under the extraction cup assembly. The first end of the water outlet lever is transmission-connected to the water outlet cylinder, and the second end is transmission-connected to the water outlet one-way valve. One end of the water outlet solenoid valve is connected to the water outlet cylinder, and the other end is connected to the positive-pressure airway and / or the negative-pressure airway. The water outlet lever is driven by the water outlet cylinder and pushes the water outlet one-way valve to move, so that the water outlet one-way valve opens the water outlet hole or seals the water outlet hole.

[0011] In a further technical solution, a transmission groove with an opening facing upward is provided on the upper part of the eccentric connecting piece, and a connecting hole is provided on the lower part of the eccentric connecting piece. The connecting hole is eccentrically arranged, and the output shaft of the driving motor is inserted in the connecting hole. The lower end part of the driving stirring rod is provided with a connecting protrusion, and the connecting protrusion is movably inserted in the transmission groove. A plug-in hole with an opening facing downward is provided in the center part of the barrel, and the upper part of the driving stirring rod is inserted in the plug-in hole.

[0012] In a further technical solution, a pressure plate is provided on the bottom surface of the extraction cup assembly, a rod hole is provided in the center of the pressure plate, and the rod hole is located below the mounting hole, and a sealing fixing groove is provided between the pressure plate and the extraction cup assembly.

[0013] The flexible sealing connector includes an annular sealing plate and a vertical connecting portion formed in the center of the annular sealing plate. The vertical connecting portion is provided with a connecting and fixing hole that passes through the flexible sealing connector. The driving stirring rod is inserted into the connecting and fixing hole. The annular sealing plate is fixedly installed in the sealing and fixing groove. The lower end face of the annular sealing plate is formed with a downwardly protruding positioning annular ring. The upper end face of the annular sealing plate is formed with at least one upwardly protruding sealing annular ring. The lower part of the sealing and fixing groove is provided with a positioning annular groove corresponding to the positioning annular ring, and the positioning annular ring is arranged in the positioning annular groove.

[0014] In a further technical solution, the driving stirring rod is provided with a stirring plug-in part, a stirring fixing part and a connecting protrusion from top to bottom, the stirring plug-in part is sleeved with a fixing rubber ring, the stirring plug-in part is inserted into the plug-in hole, and the stirring fixing part is inserted into the connecting fixing hole; the length of the stirring plug-in part is greater than or equal to the sum of the lengths of the stirring fixing part and the connecting protrusion.

[0015] In a further technical solution, the high-pressure power assembly includes a plurality of diaphragm pumps, each of which is connected in series to form a high-pressure power assembly. The high-pressure extraction device is further provided with a positive-pressure solenoid valve, a negative-pressure solenoid valve, and a connecting tee. The first end of the connecting tee is connected to the extraction cup assembly, the second end of the connecting tee is connected to the positive-pressure solenoid valve, the positive-pressure solenoid valve is connected to the high-pressure power assembly, the third end of the connecting tee is connected to the negative-pressure solenoid valve, the negative-pressure solenoid valve is connected to the high-pressure power assembly, and one end of the water outlet solenoid valve is connected to the positive-pressure solenoid valve or the negative-pressure solenoid valve, and the other end is connected to the water outlet cylinder.

[0016] The beverage extraction equipment is also provided with a control circuit, multiple control buttons and a status display component. The status display component and each control button are respectively arranged on one side of the shell. The control circuit is fixedly installed inside the shell. The status display component, each control button, each diaphragm pump, positive pressure solenoid valve, negative pressure solenoid valve and water outlet solenoid valve are respectively electrically connected to the control circuit to realize that the control circuit controls the positive pressure solenoid valve and the negative pressure solenoid valve to work alternately during extraction.

[0017] In a further technical solution, the high-pressure power assembly includes two diaphragm pumps, which are connected in series via a first connecting air pipe.

[0018] The positive pressure solenoid valve, the negative pressure solenoid valve and the water outlet solenoid valve are all provided with a first connection port, a second connection port and a third connection port.

[0019] The first connection port of the water outlet solenoid valve is connected to the atmosphere or nitrogen, and the first connection port of the positive pressure solenoid valve is connected to the atmosphere.

[0020] The second connection port of the water outlet solenoid valve is connected to the first connection port of the negative pressure solenoid valve through a third connection air pipe, and the third connection port of the water outlet solenoid valve is connected to the water outlet cylinder through a second connection air pipe.

[0021] The second connection port of the negative pressure solenoid valve is connected to the first diaphragm pump through the first negative pressure air pipe, and the third connection port of the negative pressure solenoid valve is connected to the third end of the connecting tee through the second negative pressure air pipe.

[0022] The second connection port of the positive pressure solenoid valve is connected to the second diaphragm pump through the first positive pressure air pipe, and the third connection port of the positive pressure solenoid valve is connected to the second end of the connecting tee through the second positive pressure air pipe.

[0023] The first end of the connecting tee is connected to the extraction cup assembly through a fourth connecting air pipe.

[0024] In a further technical solution, the beverage extraction equipment includes a positive pressure working state, a negative pressure working state and a water outlet working state.

[0025] Under the positive pressure working state, the water outlet solenoid valve is powered off, the atmosphere or nitrogen is connected to the first connection port of the water outlet solenoid valve, the first connection port of the water outlet solenoid valve is connected to the second connection port of the water outlet solenoid valve, the third connection port of the water outlet solenoid valve is relatively isolated from the first connection port and the second connection port, and the water outlet cylinder is relatively isolated from the water outlet solenoid valve.

[0026] The negative pressure solenoid valve is powered off, the first connection port of the negative pressure solenoid valve is connected to the second connection port of the negative pressure solenoid valve, the third connection port of the negative pressure solenoid valve is relatively isolated from the first connection port and the second connection port, and the negative pressure solenoid valve is relatively isolated from the connecting tee.

[0027] The positive pressure solenoid valve is energized, the second connection port of the positive pressure solenoid valve is connected to the third connection port of the positive pressure solenoid valve, the first connection port of the positive pressure solenoid valve is relatively isolated from the second connection port and the third connection port, and the first connection port of the positive pressure solenoid valve is relatively isolated from the atmosphere.

[0028] The water outlet solenoid valve, the third connecting air pipe, the negative pressure solenoid valve, the first negative pressure air pipe, the high-pressure power assembly, the first positive pressure air pipe, the positive pressure solenoid valve, the second positive pressure air pipe and the connecting tee are connected in sequence to form a positive pressure airway. The pressure in the extraction cup assembly is 120-200 kPa.

[0029] In the negative pressure working state, the negative pressure solenoid valve is energized, the second connection port of the negative pressure solenoid valve is connected to the third connection port of the negative pressure solenoid valve, the first connection port of the negative pressure solenoid valve is relatively isolated from the second connection port and the third connection port, and the negative pressure solenoid valve is relatively isolated from the water outlet solenoid valve.

[0030] The positive pressure solenoid valve is powered off, the atmosphere is connected to the first connection port of the positive pressure solenoid valve, the first connection port of the positive pressure solenoid valve is connected to the second connection port of the positive pressure solenoid valve, the third connection port of the positive pressure solenoid valve is relatively isolated from the first connection port and the second connection port, and the positive pressure solenoid valve is relatively isolated from the connecting tee.

[0031] The positive pressure solenoid valve, the first positive pressure air pipe, the high pressure power assembly, the first negative pressure air pipe, the second negative pressure air pipe, the connecting tee and the fourth connecting air pipe are connected in sequence to form a negative pressure airway. The pressure in the extraction cup assembly is -70 to -85 kPa.

[0032] In the water outlet working state, the water outlet solenoid valve is energized, the second connection port of the water outlet solenoid valve is connected to the third connection port of the water outlet solenoid valve, the first connection port of the water outlet solenoid valve is relatively isolated from the second connection port and the third connection port, the atmosphere or nitrogen is relatively isolated from the water outlet solenoid valve, and the water outlet solenoid valve is connected to the water outlet cylinder.

[0033] The negative pressure solenoid valve is powered off, the first connection port of the negative pressure solenoid valve is connected to the second connection port of the negative pressure solenoid valve, the third connection port of the negative pressure solenoid valve is relatively isolated from the first connection port and the second connection port, and the negative pressure solenoid valve is relatively isolated from the connecting tee.

[0034] The positive pressure solenoid valve is energized, the second connection port of the positive pressure solenoid valve is connected to the third connection port of the positive pressure solenoid valve, the first connection port of the positive pressure solenoid valve is relatively isolated from the second connection port and the third connection port, and the first connection port of the positive pressure solenoid valve is relatively isolated from the atmosphere;

[0035] During extraction, the beverage extraction equipment switches alternately between a positive pressure working state and a negative pressure working state.

[0036] In a further technical solution, the water outlet one-way valve includes a sealing valve disc, a valve stem, and a valve disc return spring. The sealing valve disc is fixedly mounted on the upper end of the valve stem. The valve stem is slidably mounted in the water outlet hole. The outer diameter of the sealing valve disc is larger than the inner diameter of the water outlet hole. A limit step is formed on the lower end of the valve stem. The valve disc return spring is sleeved on the valve stem. The upper end of the valve disc return spring abuts against the bottom surface of the extraction cup assembly. The lower end of the valve disc return spring abuts against the limit step. The second end of the water outlet lever abuts against the lower end of the valve stem.

[0037] The water outlet cylinder includes a cylinder cover, a cylinder sealing ring and a cylinder return spring. The shell is provided with a cylinder groove. The cylinder cover is slidably installed in the cylinder groove up and down. The upper end surface of the cylinder cover is provided with a driving column. The lower end surface of the cylinder cover is provided with a connecting column. The center of the cylinder groove is provided with a cylinder fixing column. The cylinder fixing column is provided with a connecting groove with an opening facing upward. The connecting column is movably inserted in the connecting groove. The cylinder return spring is sleeved on the cylinder fixing column. The upper end of the cylinder return spring abuts the cylinder cover and the lower end abuts the cylinder groove. The upper end of the driving column is provided with a driving part, and the lower end surface of the driving part abuts the cylinder groove. At the first end of the water-discharging lever, the cylinder sealing ring is sleeved on the side wall of the cylinder head, and the outer periphery of the cylinder sealing ring is against the side wall of the cylinder groove. The cylinder head is vertically opened with a constant pressure hole that passes through the cylinder head, and a constant-pressure driving chamber is formed between the cylinder head and the cylinder groove. The upper end of the constant pressure hole is connected to the atmosphere, and the lower end is connected to the driving chamber. The driving chamber is connected to the second connecting port of the water outlet solenoid valve through the second connecting air pipe. In the water outlet working state, the high-pressure extraction device evacuates the driving chamber to drive the cylinder head to move downward and drive the water outlet lever upward to push the valve stem to open the water outlet hole.

[0038] In a further technical solution, the extraction cup assembly includes a cup body and a cup cover, the cup cover sealing cover is arranged on the upper part of the cup body, the cup body is movably mounted in the extraction mounting groove, the bottom surface of the cup body extends downwardly with a positioning boss, and the corresponding extraction mounting groove is provided with a positioning groove, the positioning boss is plugged into the positioning groove,

[0039] A ventilation column is vertically arranged in the cup body, the upper end of the ventilation column extends to the upper end of the cup body and has a gap with the cup cover, the ventilation column is provided with a ventilation hole, the upper end of the ventilation hole is connected to the inner cavity of the cup body, and the lower end of the ventilation hole is connected to the first end of the connecting tee through the fourth connecting air pipe.

[0040] In a further technical solution, a water outlet funnel is movably installed below the water outlet hole, a water inlet is provided on the upper portion of one side of the water outlet funnel, a water outlet is provided on the lower portion of the other side, the water outlet hole is connected to the water inlet, a first magnet is provided on the upper portion of the water outlet funnel, a second magnet is provided on the housing, and the first magnet and the second magnet are magnetically engaged;

[0041] The upper part of the barrel is provided with a barrel cover, which covers the upper part of the barrel. The outer periphery of the barrel cover is provided with multiple buckles at intervals, and each buckle is connected to the barrel buckle respectively;

[0042] A detection switch for detecting the cup body is also provided on one side of the extraction installation tank. The detection switch is electrically connected to the control circuit, and the cup body is triggered to cooperate with the detection switch.

[0043] After adopting the above structure, the advantages of the present invention over the prior art are: the driving motor drives the driving rod to rotate around the axial direction with the flexible sealing connecting member as the fulcrum through the eccentric connecting member, thereby driving the barrel to rotate around the axial direction in the extraction cup assembly, simulating manual stirring action, expanding the stirring range, increasing the stirring force, improving the extraction uniformity of the liquid, accelerating the cold extraction speed, fully extracting the extract, and improving the taste of the beverage, especially for extracts with viscosity, large particles, flakes, tea bags and coffee bags, etc., with better extraction effect;

[0044] The extraction cup assembly and the water funnel are detachable for easy disassembly and cleaning. They can also be placed in the dishwasher for easy cleaning.

[0045] The positive pressure solenoid valve and the negative pressure solenoid valve of the high-pressure extraction device work alternately, so that the pressure in the extraction cup assembly is repeatedly switched between negative pressure and positive pressure, so that the liquid in the extraction cup assembly repeatedly passes through the filter hole into the barrel to repeatedly squeeze, impact and release the extract, accelerating the liquid to repeatedly penetrate the core of the powder particles of the extract, making the extraction more complete and faster.

[0046] The automatic water outlet device uses a high-pressure extraction device as a power source, and drives the water outlet cylinder to push the water outlet lever under the control of the water outlet solenoid valve, thereby pushing the water one-way valve to move, so that the water outlet one-way valve opens the water outlet hole or seals the water outlet hole, achieving the purpose of automatic water outlet, simplifying the structure, reducing costs, and improving sealing reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The present invention will be further described below with reference to the accompanying drawings and examples.

[0048] Figure 1 It is a structural schematic diagram of the present invention;

[0049] Figure 2 is a disassembled exploded view of the present invention;

[0050] Figure 3 is a cross-sectional view of the water outlet one-way valve of the present invention when it is closed;

[0051] Figure 4 The present invention Figure 3 A magnified view of part A;

[0052] Figure 5 is a cross-sectional view of the water outlet one-way valve of the present invention when it is open;

[0053] Figure 6 The present invention Figure 5 A magnified view of part B;

[0054] Figure 7 is an exploded view of the stirring extraction mechanism of the present invention;

[0055] Figure 8 Schematic diagram of the high-pressure extraction device of the present invention under positive pressure working state;

[0056] Figure 9 Schematic diagram of the high-pressure extraction device of the present invention under negative pressure working state;

[0057] Figure 10 It is a schematic diagram of the high-pressure extraction device of the present invention in the water-discharging working state.

[0058] In the picture:

[0059] 1 housing, 11 extraction installation slot, 12 water receiving box, 131 cylinder fixing column, 14 control button;

[0060] 2 extraction cup assembly, 21 cup body, 22 cup cover, 23 positioning boss, 24 ventilation column, 241 ventilation hole, 25 water outlet hole, 26 pressing plate, 261 positioning annular groove, 27 mounting hole, 28 rod hole, 29 sealing fixing groove;

[0061] 3 barrel, 31 filter hole, 32 plug hole, 33 barrel cover;

[0062] 41 driving motor, 42 eccentric connector, 421 transmission groove, 422 connecting hole, 43 driving stirring rod, 431 connecting protrusion, 432 stirring plug part, 433 stirring fixing part, 434 fixing rubber ring, 44 flexible sealing connector, 441 annular sealing sheet, 442 vertical connecting part, 443 connecting fixing hole, 444 positioning annular ring, 445 sealing annular ring;

[0063] 51 high-pressure power assembly, 511 diaphragm pump, 52 positive-pressure solenoid valve, 53 negative-pressure solenoid valve, 54 connecting tee, 551 first connecting port, 552 second connecting port, 553 third connecting port, 561 first connecting air pipe, 562 second connecting air pipe, 563 third connecting air pipe, 564 fourth connecting air pipe, 571 first positive-pressure air pipe, 572 second positive-pressure air pipe, 581 first negative-pressure air pipe, 582 second negative-pressure air pipe;

[0064] 61 water outlet solenoid valve, 62 water outlet one-way valve, 621 sealing valve disc, 622 valve stem, 623 limiting step, 624 valve disc return spring, 63 water outlet lever, 641 cylinder cover, 642 driving column, 643 driving part, 644 connecting column, 645 cylinder sealing ring, 646 cylinder return spring, 647 driving chamber, 648 constant pressure hole, 65 water outlet funnel, 651 water inlet, 652 water outlet, 653 first magnet, 654 second magnet. DETAILED DESCRIPTION

[0065] The following are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention.

[0066] A high-pressure swing-stirring beverage extraction device, such as Figures 1 to 10 As shown, it includes a shell 1 and an extraction installation tank 11 with an opening facing upwards, which is arranged on the upper part of the shell 1. A water receiving box 12 is arranged below the front side of the extraction installation tank 11. It is characterized in that: a stirring extraction device, a high-pressure extraction device and an automatic water outlet device are arranged in the shell 1. The stirring extraction device includes an extraction cup assembly 2, a stirring extraction mechanism and a barrel 3 for containing the material to be extracted. The outer wall of the barrel 3 is provided with a filter screen of 700 to 1000 meshes, thereby forming a plurality of filter holes 31. The extraction cup assembly 2 is movably installed in the extraction installation tank 11. The barrel 3 is arranged in the extraction cup assembly 2, and the stirring extraction mechanism includes a driving motor 41, an eccentric connector 42, a driving stirring rod 43 and a flexible sealing connector 44. The bottom of the extraction cup assembly 2 is provided with a mounting hole 27, and the flexible sealing connector 44 is arranged in the mounting hole 27. The driving motor 41 is fixedly installed below the flexible sealing connector 44, and the eccentric connector 42 is eccentrically installed on the output shaft of the driving motor 41. The middle part of the driving stirring rod 43 is fixedly installed on the flexible sealing connector 44, and the upper part of the driving stirring rod 43 extends into the extraction cup assembly 2 and The high-pressure extraction device comprises a positive-pressure airway, a negative-pressure airway and a high-pressure power assembly 51. The first ends of the positive-pressure airway and the negative-pressure airway are respectively connected to the extraction cup assembly 2, and the second ends of the positive-pressure airway and the negative-pressure airway are respectively connected to the high-pressure power assembly 51. The automatic water outlet device comprises a water outlet solenoid valve 61, a water outlet one-way valve 62, a water outlet lever 63 and a water outlet cylinder. The extraction cup A water outlet hole 25 is provided on the front side of the bottom of the component 2, and a water outlet one-way valve 62 is provided in the water outlet hole 25. A water outlet lever 63 is swingably installed under the extraction cup component 2. The first end of the water outlet lever 63 is transmission-connected to the water outlet cylinder, and the second end is transmission-connected to the water outlet one-way valve 62. One end of the water outlet solenoid valve 61 is connected to the water outlet cylinder, and the other end is connected to the positive-pressure airway and / or the negative-pressure airway. The water outlet lever 63 is driven by the water outlet cylinder and pushes the water outlet one-way valve 62 to move, so that the water outlet one-way valve 62 opens the water outlet hole 25 or seals the water outlet hole 25.

[0067] When performing cold extraction, traditional beverage extraction equipment only relies on vibration or rotation stirring to perform extraction, and the stirring uniformity is poor, especially for extracts with viscosity, large particles, flakes, tea bags and coffee bags, the extraction effect is poor and the speed is slow. However, the present invention uses an eccentric connecting piece 42 to enable the driving motor 41 to drive the driving stirring rod 43 to rotate around the axial direction with the flexible sealing connecting piece 44 as the fulcrum, simulating manual stirring, thereby driving the barrel 3 to rotate around the axial direction in the extraction cup assembly 2, expanding the stirring range, increasing the stirring force, improving the extraction uniformity of the liquid, accelerating the cold extraction speed, fully extracting the extract, and improving the taste of the beverage, especially for extracts with viscosity, large particles, flakes, tea bags and coffee bags, with better extraction effect; extraction cup assembly 2 adopts a detachable design, which is easy to disassemble and clean, and can be placed in a dishwasher for cleaning, which is convenient to clean; the high-pressure extraction device causes the pressure in the extraction cup assembly to repeatedly switch between negative pressure and positive pressure, so that the liquid in the extraction cup assembly 2 repeatedly passes through the filter hole 31 and enters the barrel 3 to repeatedly squeeze, impact and release the extract, thereby accelerating the liquid to repeatedly penetrate the powder particle core of the extract, making the extraction more complete and faster; the automatic water discharge device uses the high-pressure extraction device as a power source, and drives the water discharge cylinder to push the water discharge lever 63 under the control of the water discharge solenoid valve 61, thereby pushing the water check valve 62 to move through the water discharge lever 63, so that the water discharge check valve 62 opens the water discharge hole 25 or seals the water discharge hole 25, thereby achieving the purpose of automatic water discharge, simplifying the structure, reducing costs, and improving sealing reliability.

[0068] Specifically, a transmission groove 421 with an opening facing upward is provided on the upper part of the eccentric connecting member 42, and a connecting hole 422 is provided on the lower part of the eccentric connecting member 42. The connecting hole 422 is eccentrically arranged, and the output shaft of the driving motor 41 is inserted in the connecting hole 422. The lower end of the driving stirring rod 43 is provided with a connecting protrusion 431, and the connecting protrusion 431 is movably inserted in the transmission groove 421. The central part of the barrel 3 is provided with a plug-in hole 32 with an opening facing downward, and the upper part of the driving stirring rod 43 is inserted in the plug-in hole 32. During extraction, the driving motor 41 drives the eccentric connecting member 42 to rotate. Since the connecting hole 422 is eccentrically arranged, the power is transmitted by utilizing the principle of frictional motion of the inner cam. The eccentric rotation of the eccentric connecting member 42 drives the connecting protrusion 431 of the driving stirring rod 43 to perform circular motion along the axial direction. The connecting protrusion 431 is a sphere or an ellipsoid. The smooth shape can reduce the friction with the transmission groove 421, making it drive smoother. At the same time, the connecting protrusion 431 is movably inserted into the transmission groove 421, which is convenient for separating the eccentric connecting member 42 and the driving stirring rod 43 when disassembling the extraction cup assembly 2. It is convenient for disassembly and cleaning, has a simple structure, and is low in cost. The driving motor 41 adopts a micro DC motor with a model number of 528, 520 or 500, and a rotation speed of 2500 to 4000 r / min.

[0069] Specifically, a pressure plate 26 is provided on the bottom surface of the extraction cup assembly 2, and a rod hole 28 is formed in the center of the pressure plate 26 to pass through the pressure plate 26, and the rod hole 28 is located below the mounting hole 27. A sealing fixing groove 29 is provided between the pressure plate 26 and the extraction cup assembly 2, and the flexible sealing connector 44 includes an annular sealing sheet 441 and a vertical connecting portion 442 formed in the center of the annular sealing sheet 441. The vertical connecting portion 442 is provided with a connecting and fixing hole 443 passing through the flexible sealing connector 44, and the driving stirring rod 43 is inserted into the connecting and fixing hole 443. The annular sealing sheet 441 is fixedly installed in the sealing and fixing groove 29, and a downwardly protruding positioning annular ring 444 is formed on the lower end surface of the annular sealing sheet 441, and at least one upwardly protruding sealing annular ring 445 is formed on the upper end surface of the annular sealing sheet 441. A positioning annular groove 261 corresponding to the positioning annular ring 444 is formed in the lower part of the sealing and fixing groove 29, and the positioning annular ring 444 is arranged in the positioning annular groove 261. The pressure plate 26 is fixed to the bottom surface of the extraction cup assembly 2 by screws, clamping and fixing the flexible sealing connector 44 between the extraction cup assembly 2 and the pressure plate 26, which is convenient for installation and disassembly, while increasing the sealing performance of the flexible sealing connector 44 to prevent liquid outflow; the positioning annular ring 444 and the positioning annular groove 261 can quickly position and install the flexible sealing connector 44, and help to seal the gap between the flexible sealing connector 44 and the pressure plate 26, and the raised sealing annular ring 445 helps to seal the gap between the flexible sealing connector 44 and the extraction cup assembly 2, further improving reliability and stability and preventing liquid outflow.

[0070] Specifically, the driving stirring rod 43 is provided with a stirring plug-in part 432, a stirring fixing part 433 and a connecting protrusion 431 from top to bottom. The stirring plug-in part 432 is sleeved with a fixing rubber ring 434. The stirring plug-in part 432 is inserted into the plug-in hole 32, and the stirring fixing part 433 is inserted into the connecting fixing hole 443; the length of the stirring plug-in part 432 is greater than or equal to the sum of the lengths of the stirring fixing part 433 and the connecting protrusion 431. The diameter of the stirring fixing portion 433 is smaller than the diameter of the stirring plug-in portion 432 and the connecting protrusion 431, so that it is easy to be fixed and inserted in the connecting fixing hole 443, thereby preventing the driving stirring rod 43 from being displaced in the vertical direction. At the same time, it is also easy to seal the gap between the driving stirring rod 43 and the flexible sealing connector 44, thereby improving reliability and stability. By fixing the rubber ring 434, the friction between the stirring plug-in portion 432 and the plug-in hole 32 is increased to prevent the driving stirring rod 43 from being thrown out when the barrel 3 moves, thereby further improving reliability and stability. The swing amplitude of the connecting protrusion 431 is 2 mm, and the swing amplitude of the barrel 3 is 4 to 8 mm.

[0071] Specifically, the high-pressure power assembly 51 includes a plurality of diaphragm pumps 511, each of which is connected in series to form the high-pressure power assembly 51. The high-pressure extraction device is also provided with a positive-pressure solenoid valve 52, a negative-pressure solenoid valve 53, and a connecting tee 54. The first end of the connecting tee 54 is connected to the extraction cup assembly 2, the second end of the connecting tee 54 is connected to the positive-pressure solenoid valve 52, the positive-pressure solenoid valve 52 is connected to the high-pressure power assembly 51, the third end of the connecting tee 54 is connected to the negative-pressure solenoid valve 53, the negative-pressure solenoid valve 53 is connected to the high-pressure power assembly 51, and one end of the water outlet solenoid valve 61 is connected to the positive-pressure solenoid valve 61. The beverage extraction equipment is also provided with a control circuit, a plurality of control buttons 14 and a status display component. The status display component and each control button 14 are respectively arranged on one side of the shell 1, and the control circuit is fixedly installed inside the shell 1. The status display component, each control button 14, each diaphragm pump 511, the positive pressure solenoid valve 52, the negative pressure solenoid valve 53 and the water outlet solenoid valve 61 are respectively electrically connected to the control circuit to realize that the control circuit controls the positive pressure solenoid valve 52 and the negative pressure solenoid valve 53 to work alternately during extraction. Connecting multiple diaphragm pumps 511 in series can increase the vacuum degree and improve the extraction effect. The air flow direction is controlled by the positive pressure solenoid valve 52 and the negative pressure solenoid valve 53. Only one high-pressure power component 51 is required to achieve switching between positive and negative pressure states. There is no need for two independent high-pressure power components 51. The vacuum degree is improved while the number of diaphragm pumps 511 remains unchanged. The structure is simple and the cost is low. The control circuit stores extraction programs with different extraction times. According to the taste or concentration requirements, the required extraction program is selected through the control button 14. It is more convenient to use and can adapt to people with different tastes. The status display component uses a display screen or indicator light to obtain the working status of the beverage extraction equipment through the display screen or indicator light.

[0072] Specifically, if Figures 8 to 10As shown, the high-pressure power assembly 51 includes two diaphragm pumps 511, and the two diaphragm pumps 511 are connected in series through a first connecting air pipe 561. The positive pressure solenoid valve 52, the negative pressure solenoid valve 53 and the water outlet solenoid valve 61 are all provided with a first connecting port 551, a second connecting port 552 and a third connecting port 553. The first connecting port 551 of the water outlet solenoid valve 61 is connected to the atmosphere or nitrogen, the first connecting port 551 of the positive pressure solenoid valve 52 is connected to the atmosphere, the second connecting port 552 of the water outlet solenoid valve 61 is connected to the first connecting port 551 of the negative pressure solenoid valve 53 through a third connecting air pipe 563, and the third connecting port 553 of the water outlet solenoid valve 61 is connected to the outlet. The water cylinder is connected through the second connecting air pipe 562, the second connecting port 552 of the negative pressure solenoid valve 53 is connected to the first diaphragm pump 511 through the first negative pressure air pipe 581, the third connecting port 553 of the negative pressure solenoid valve 53 is connected to the third end of the connecting tee 54 through the second negative pressure air pipe 582, the second connecting port 552 of the positive pressure solenoid valve 52 is connected to the second diaphragm pump 511 through the first positive pressure air pipe 571, the third connecting port 553 of the positive pressure solenoid valve 52 is connected to the second end of the connecting tee 54 through the second positive pressure air pipe 572, and the first end of the connecting tee 54 is connected to the extraction cup assembly 2 through the fourth connecting air pipe 564.

[0073] Specifically, the beverage extraction equipment includes a positive pressure working state, a negative pressure working state and a water outlet working state. In the positive pressure working state, Figure 8As shown, the water outlet solenoid valve 61 is powered off, the atmosphere or nitrogen is connected to the first connection port 551 of the water outlet solenoid valve 61, the first connection port 551 of the water outlet solenoid valve 61 is connected to the second connection port 552 of the water outlet solenoid valve 61, the third connection port 553 of the water outlet solenoid valve 61 is relatively isolated from the first connection port 551 and the second connection port 552, the water outlet cylinder is relatively isolated from the water outlet solenoid valve 61, the negative pressure solenoid valve 53 is powered off, and the first connection port 551 of the negative pressure solenoid valve 53 is connected to the second connection port 552 of the water outlet solenoid valve 61. The positive pressure solenoid valve 52 is energized, and the second connection port 552 of the positive pressure solenoid valve 52 is connected to the third connection port 553 of the positive pressure solenoid valve 52, and the first connection port 551 of the positive pressure solenoid valve 52 is connected to the second connection port 552 and the third connection port 553 of the negative pressure solenoid valve 53. The negative pressure solenoid valve 53 is relatively isolated from the connection three-way 54. The positive pressure solenoid valve 52 is energized, and the second connection port 552 of the positive pressure solenoid valve 52 is connected to the third connection port 553 of the positive pressure solenoid valve 52. The first connection port 551 of the positive pressure solenoid valve 52 is connected to the second connection port 552 and the third connection port 553 of the positive pressure solenoid valve 52. 53 is relatively isolated, the first connection port 551 of the positive pressure solenoid valve 52 is relatively isolated from the atmosphere, the water outlet solenoid valve 61, the third connecting air pipe 563, the negative pressure solenoid valve 53, the first negative pressure air pipe 581, the high-pressure power assembly 51, the first positive pressure air pipe 571, the positive pressure solenoid valve 52, the second positive pressure air pipe 572 and the connecting tee 54 are connected in sequence to form a positive pressure air passage, and the pressure in the extraction cup assembly 2 is 120-200 kPa; air in the atmosphere enters the positive pressure air passage through the first connection port 551 of the water outlet solenoid valve 61, and the air enters the extraction cup assembly 2 through the positive pressure air passage, squeezing the liquid in the extraction cup assembly 2 so that it passes through the filter hole 31 and enters the filter cartridge 3 to impact the extract; preferably, a nitrogen gas source is connected to the first connection port 551 of the water outlet solenoid valve 61, so that nitrogen is injected into the extraction cup assembly 2, so that contact with oxygen is reduced during the extraction process, oxidation reaction is prevented, and the taste of the beverage is further improved.

[0074] In negative pressure working state, such as Figure 9As shown, the negative pressure solenoid valve 53 is energized, the second connection port 552 of the negative pressure solenoid valve 53 is connected to the third connection port 553 of the negative pressure solenoid valve 53, the first connection port 551 of the negative pressure solenoid valve 53 is relatively isolated from the second connection port 552 and the third connection port 553, the negative pressure solenoid valve 53 is relatively isolated from the water outlet solenoid valve 61, the positive pressure solenoid valve 52 is de-energized, the atmosphere is connected to the first connection port 551 of the positive pressure solenoid valve 52, the first connection port 551 of the positive pressure solenoid valve 52 is connected to the second connection port 552 of the positive pressure solenoid valve 52, the third connection port 553 of the positive pressure solenoid valve 52 is relatively isolated from the first connection port 551 and the second connection port 552, the positive pressure solenoid valve 52 is relatively isolated from the connecting three-way valve 54, the positive pressure solenoid valve 52, the first positive pressure air Tube 571, high-pressure power assembly 51, first negative-pressure air pipe 581, second negative-pressure air pipe 582, connecting tee 54 and fourth connecting air pipe 564 are connected in sequence to form a negative-pressure air passage, and the pressure in the extraction cup assembly 2 is -70 to -85 kPa; the air in the extraction cup assembly 2 enters the negative-pressure air passage and is discharged to the atmosphere through the first connecting port 551 of the positive-pressure solenoid valve 52, generating a negative pressure in the extraction cup assembly 2, causing the liquid to be extracted from the extract, and the beverage extraction equipment is cyclically switched between the positive-pressure working state and the negative-pressure working state, so that the liquid in the extraction cup assembly 2 repeatedly passes through the filter hole 31 and enters the barrel 3 to repeatedly squeeze, impact and release the extract, thereby accelerating the liquid to repeatedly penetrate the powder particle core of the extract, making the extraction more complete and faster.

[0075] During extraction, the beverage extraction equipment switches alternately between the positive pressure working state and the negative pressure working state, so that there is a pressure difference of 190 to 285 kPa between the positive pressure working state and the negative pressure working state, thereby accelerating the extraction speed.

[0076] In the water discharge working state, if Figure 10As shown, the water outlet solenoid valve 61 is energized, the second connection port 552 of the water outlet solenoid valve 61 is connected to the third connection port 553 of the water outlet solenoid valve 61, the first connection port 551 of the water outlet solenoid valve 61 is relatively isolated from the second connection port 552 and the third connection port 553, the atmosphere or nitrogen is relatively isolated from the water outlet solenoid valve 61, the water outlet solenoid valve 61 is connected to the water outlet cylinder, the negative pressure solenoid valve 53 is de-energized, the first connection port 551 of the negative pressure solenoid valve 53 is connected to the second connection port 552 of the negative pressure solenoid valve 53, the third connection port 553 of the negative pressure solenoid valve 53 is relatively isolated from the first connection port 551 and the second connection port 552, the negative pressure solenoid valve 53 is relatively isolated from the connecting tee 54, the positive pressure solenoid valve 52 is energized, the positive pressure solenoid valve 52 is energized, and the positive pressure solenoid valve 52 is energized. The second connection port 552 of the magnetic valve 52 is connected to the third connection port 553 of the positive pressure solenoid valve 52, and the first connection port 551 of the positive pressure solenoid valve 52 is relatively isolated from the second connection port 552 and the third connection port 553. The first connection port 551 of the positive pressure solenoid valve 52 is relatively isolated from the atmosphere. When the extraction is completed, the water outlet cylinder is connected to the atmosphere through a constant pressure hole 648 with a diameter of 0.3 to 0.6 mm provided on the water outlet cylinder. The air in the water outlet cylinder is discharged into the extraction cup assembly 2 through the positive pressure airway, thereby driving the water outlet lever 63 through the water outlet cylinder to open the water outlet check valve 62. The water outlet cylinder and the entire air path up to the extraction cup assembly 2 circulate with the atmosphere to generate gas flow, and the extraction cup assembly 2 is positively pressurized, and the liquid is discharged from the water outlet hole.

[0077] Specifically, the water outlet one-way valve 62 includes a sealing valve disc 621, a valve stem 622 and a valve disc return spring 624. The sealing valve disc 621 is fixedly installed on the upper end of the valve stem 622. The valve stem 622 is slidably installed in the water outlet hole 25. The outer diameter of the sealing valve disc 621 is larger than the inner diameter of the water outlet hole 25. The lower end of the valve stem 622 is formed with a limited step 623. The valve disc return spring 624 is sleeved on the valve stem 622. The upper end of the valve disc return spring 624 abuts against the bottom surface of the extraction cup assembly 2. The valve disc return spring 62 4 is pressed against the limit step 623, and the second end of the water outlet lever 63 is pressed against the lower end of the valve stem 622; the water outlet cylinder includes a cylinder cover 641, a cylinder sealing ring 645 and a cylinder return spring 646. The housing 1 is provided with a cylinder groove, and the cylinder cover 641 is slidably installed in the cylinder groove. The upper end surface of the cylinder cover 641 is provided with a driving column 642, and the lower end surface of the cylinder cover 641 is provided with a connecting column 644. The center of the cylinder groove is provided with a cylinder fixing column 131, and the cylinder fixing column 131 is provided with an opening facing The connecting groove on the top, the connecting column 644 is movably inserted into the connecting groove, the cylinder return spring 646 is sleeved on the cylinder fixing column 131, the upper end of the cylinder return spring 646 abuts the cylinder cover 641, and the lower end abuts the cylinder groove, the upper end of the driving column 642 is provided with a driving part 643, the lower end surface of the driving part 643 abuts the first end of the water discharge lever 63, the cylinder sealing ring 645 is sleeved on the side wall of the cylinder cover 641, the outer periphery of the cylinder sealing ring 645 abuts the side wall of the cylinder groove, and the cylinder cover 641 vertically opens a through-cylinder The constant pressure hole 648 of the cover 641 forms a constant pressure driving chamber 647 between the cylinder cover 641 and the cylinder groove. The upper end of the constant pressure hole 648 is connected to the atmosphere, and the lower end is connected to the driving chamber 647. The driving chamber 647 is connected to the second connecting port 552 of the water outlet solenoid valve 61 through the second connecting air pipe 562. In the water outlet working state, the high-pressure extraction device evacuates the driving chamber 647 to drive the cylinder cover 641 to move downward and drive the water outlet lever 63 to push the valve stem 622 upward to open the water outlet hole 25.

[0078] like Figure 4 As shown, during extraction, the driving chamber 647 is kept in balance with the atmospheric pressure through the constant pressure hole 648, and the sealing valve plate 621 moves upward under the action of the valve plate return spring 624 to maintain the seal of the water outlet 25, as shown in FIG. Figure 6As shown, in the water discharge working state, the driving chamber 647 is vacuumed by the high-pressure extraction device, and the diameter of the constant pressure hole 648 is set to 0.3-0.6 mm. The vacuuming speed of the high-pressure extraction device is greater than the speed at which the air in the atmosphere enters the constant pressure hole 648, thereby generating a pressure difference between the driving chamber 647 and the atmosphere. The cylinder cover 641 moves downward under the action of the negative pressure, and the driving portion 643 of the driving column 642 presses down the first end of the water discharge lever 63, causing the second end of the water discharge lever 63 to tilt upward and press against the valve stem 622, thereby pushing up the sealing valve plate 621, and the valve stem 622 is The cross-section is cross-shaped or has a diameter smaller than that of the water outlet 25, allowing the beverage to flow out from the gap between the water outlet 25 and the valve stem 622, achieving automatic water discharge. This design is simple, cost-effective, and convenient to use. After water discharge is complete, the high-pressure extraction device stops operating, allowing atmospheric air to enter the drive chamber 647 through the constant pressure hole 648, thereby balancing the drive chamber 647 with atmospheric pressure. The cylinder cover 641 returns upward under the action of the cylinder return spring 646, while the sealing valve plate 621 also returns downward under the action of the valve plate return spring 624, thereby resealing the water outlet 25. A cylinder groove is formed directly in the housing 1, and the cylinder cover 641 is installed within the cylinder groove. This simplifies the structure of the water outlet cylinder, reduces costs, and facilitates connection to the second connecting air pipe 562.

[0079] Specifically, the extraction cup assembly 2 includes a cup body 21 and a cup cover 22. The cup cover 22 is a sealing cover provided on the upper part of the cup body 21. The cup body 21 is movably installed in the extraction mounting groove 11. A positioning boss 23 extends downward from the bottom surface of the cup body 21. The corresponding extraction mounting groove 11 is provided with a positioning groove. The positioning boss 23 cooperates with the positioning groove plug-in 32. A ventilation column 24 is vertically arranged in the cup body 21. The upper end of the ventilation column 24 extends to the upper end of the cup body 21 and has a gap with the cup cover 22. The ventilation column 24 is provided with a ventilation hole 241. The upper end of the ventilation hole 241 is communicated with the inner cavity of the cup body 21. The lower end of the ventilation hole 241 is connected to the first end of the connecting tee 54 through the fourth connecting air pipe 564. The cup cover 22 is threadedly connected to the cup body 21, and a sealing ring is provided between the cup cover 22 and the cup body 21 to ensure the tightness of the connection between the cup cover 22 and the cup body 21 and improve the pressure-bearing capacity of the extraction cup assembly 2; the ventilation column 24 is formed on one side of the cup body 21 to simplify the structure and reduce costs. The ventilation column 24 extends to the upper end of the cup body 21 to prevent liquid from entering the positive pressure airway and the negative pressure airway, thereby improving reliability and stability.

[0080] Specifically, a water outlet funnel 65 is movably installed below the water outlet hole 25. A water inlet 651 is provided on the upper part of one side of the water outlet funnel 65, and a water outlet 652 is provided on the lower part of the other side. The water outlet hole 25 is connected to the water inlet 651. A first magnet 653 is provided on the upper part of the water outlet funnel 65, and a second magnet 654 is provided on the shell 1. The first magnet 653 and the second magnet 654 are magnetically engaged; a barrel cover 33 is provided on the upper part of the barrel 3, and the barrel cover 33 is covered on the upper part of the barrel 3. A plurality of buckles are provided at intervals on the outer periphery of the barrel cover 33. The buckle adopts a rotating buckle structure, and each buckle is respectively connected to the barrel 3; a detection switch for detecting the cup body 21 is also provided on one side of the extraction installation groove 11. The detection switch is electrically connected to the control circuit, and the cup body 21 is triggered to cooperate with the detection switch. The water outlet funnel 65 is movably installed by the first magnet 653 and the second magnet 654, which is convenient for disassembly and cleaning. The detection switch detects whether the extraction cup assembly 2 is installed, thereby limiting the switch of the beverage extraction equipment through the control circuit to improve safety. The detection switch adopts a micro switch, and the contact of the micro switch extends into the extraction installation groove 11. When the extraction cup assembly 2 is installed in the extraction installation groove 11, the extraction cup assembly 2 presses against the contact of the micro switch and triggers the micro switch to release the safety restriction.

[0081] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A high-pressure swing-stirring beverage extraction device, comprising a housing (1) and an extraction installation tank (11) disposed on the upper portion of the housing (1) with an opening facing upward, a water receiving box (12) disposed below the front side of the extraction installation tank (11), and characterized in that: The housing (1) is provided with a stirring extraction device, a high-pressure extraction device and an automatic water outlet device. The stirring extraction device comprises an extraction cup assembly (2), a stirring extraction mechanism and a barrel (3) for containing a substance to be extracted. The outer wall of the barrel (3) is provided with a plurality of filter holes (31). The extraction cup assembly (2) is movably mounted in an extraction mounting groove (11). The barrel (3) is arranged in the extraction cup assembly (2). The stirring extraction mechanism comprises a driving motor (41), an eccentric connector (42), a driving stirring rod (43) and a flexible sealing connector (44); a mounting hole (27) is provided at the bottom of the extraction cup assembly (2); the flexible sealing connector (44) is arranged in the mounting hole (27); the driving motor (41) is fixedly mounted below the flexible sealing connector (44); the eccentric connector (42) is eccentrically mounted on the output shaft of the driving motor (41); the middle part of the driving stirring rod (43) is fixedly mounted on the flexible sealing connector (44); the upper part of the driving stirring rod (43) extends into the extraction cup assembly (2) and is fixedly connected to the barrel (3); the lower end of the driving stirring rod (43) is transmission-connected to the eccentric connector (42); and the barrel (3) rotates around the axial direction with the flexible sealing connector (44) as a fulcrum; The high-pressure extraction device comprises a positive-pressure airway, a negative-pressure airway, and a high-pressure power assembly (51), wherein the first ends of the positive-pressure airway and the negative-pressure airway are respectively connected to the extraction cup assembly (2), and the second ends of the positive-pressure airway and the negative-pressure airway are respectively connected to the high-pressure power assembly (51); The automatic water outlet device comprises a water outlet solenoid valve (61), a water outlet check valve (62), a water outlet lever (63) and a water outlet cylinder. A water outlet hole (25) is provided on the front side of the bottom of the extraction cup assembly (2). The water outlet check valve (62) is provided at the water outlet hole (25). The water outlet lever (63) is swingably installed below the extraction cup assembly (2). A first end of the water outlet lever (63) is transmission-connected to the water outlet cylinder, and a second end is transmission-connected to the water outlet check valve (62). One end of the water outlet solenoid valve (61) is connected to the water outlet cylinder, and the other end is connected to the positive pressure airway and / or the negative pressure airway. The water outlet lever (63) is driven by the water outlet cylinder and pushes the water outlet check valve (62) to move, so that the water outlet check valve (62) opens the water outlet hole (25) or seals the water outlet hole (25). The upper portion of the eccentric connecting member (42) is provided with a transmission groove (421) with an opening facing upward, the lower portion of the eccentric connecting member (42) is provided with a connection hole (422), the connection hole (422) is eccentrically arranged, the output shaft of the driving motor (41) is inserted into the connection hole (422), the lower end portion of the driving stirring rod (43) is provided with a connection protrusion (431), the connection protrusion (431) is movably inserted into the transmission groove (421), the central portion of the barrel (3) is provided with a plug hole (32) with an opening facing downward, and the upper portion of the driving stirring rod (43) is inserted into the plug hole (32).

2. The high-pressure swing-stirring beverage extraction device according to claim 1, characterized in that: The bottom surface of the extraction cup assembly (2) is provided with a pressing plate (26), the center of the pressing plate (26) is provided with a rod hole (28) penetrating the pressing plate (26), the rod hole (28) is located below the mounting hole (27), and a sealing fixing groove (29) is provided between the pressing plate (26) and the extraction cup assembly (2). The flexible sealing connector (44) comprises an annular sealing sheet (441) and a vertical connecting portion (442) formed at the center of the annular sealing sheet (441); the vertical connecting portion (442) is provided with a connecting and fixing hole (443) that passes through the flexible sealing connector (44); the driving stirring rod (43) is inserted into the connecting and fixing hole (443); the annular sealing sheet (441) is fixedly installed in the sealing and fixing groove (29); the lower end surface of the annular sealing sheet (441) is formed with a downwardly protruding positioning annular ring (444); the upper end surface of the annular sealing sheet (441) is formed with at least one upwardly protruding sealing annular ring (445); the lower part of the sealing and fixing groove (29) is provided with a positioning annular groove (261) corresponding to the positioning annular ring (444); the positioning annular ring (444) is arranged in the positioning annular groove (261).

3. The high-pressure swing-stirring beverage extraction device according to claim 2, characterized in that: The driving stirring rod (43) is provided with a stirring plug-in portion (432), a stirring fixing portion (433) and the connecting convex portion (431) in sequence from top to bottom; the stirring plug-in portion (432) is sleeved with a fixing rubber ring (434); the stirring plug-in portion (432) is inserted into the inserting hole (32); and the stirring fixing portion (433) is inserted into the connecting fixing hole (443); the length of the stirring plug-in portion (432) is greater than or equal to the sum of the lengths of the stirring fixing portion (433) and the connecting convex portion (431).

4. The high-pressure swing-stirring beverage extraction device according to any one of claims 1 to 3, characterized in that: The high-pressure power assembly (51) includes a plurality of diaphragm pumps (511), each of which is connected in series to form the high-pressure power assembly (51). The high-pressure extraction device is further provided with a positive-pressure solenoid valve (52), a negative-pressure solenoid valve (53), and a connecting tee (54). The first end of the connecting tee (54) is connected to the extraction cup assembly (2), the second end of the connecting tee (54) is connected to the positive-pressure solenoid valve (52), the positive-pressure solenoid valve (52) is connected to the high-pressure power assembly (51), the third end of the connecting tee (54) is connected to the negative-pressure solenoid valve (53), the negative-pressure solenoid valve (53) is connected to the high-pressure power assembly (51), one end of the water outlet solenoid valve (61) is connected to the positive-pressure solenoid valve (52) or the negative-pressure solenoid valve (53), and the other end is connected to the water outlet cylinder. The beverage extraction device is further provided with a control circuit, a plurality of control buttons (14) and a status display component. The status display component and each control button (14) are respectively provided on one side of the housing (1). The control circuit is fixedly installed inside the housing (1). The status display component, each control button (14), each diaphragm pump (511), the positive pressure solenoid valve (52), the negative pressure solenoid valve (53) and the water outlet solenoid valve (61) are respectively electrically connected to the control circuit, so that the control circuit controls the positive pressure solenoid valve (52) and the negative pressure solenoid valve (53) to work alternately during extraction.

5. The high-pressure swing-stirring beverage extraction device according to claim 4, characterized in that: The high-pressure power assembly (51) includes two diaphragm pumps (511), and the two diaphragm pumps (511) are connected in series via a first connecting air pipe (561). The positive pressure solenoid valve (52), the negative pressure solenoid valve (53) and the water outlet solenoid valve (61) are all provided with a first connection port (551), a second connection port (552) and a third connection port (553). The first connection port (551) of the water outlet electromagnetic valve (61) is connected to the atmosphere or nitrogen, and the first connection port (551) of the positive pressure electromagnetic valve (52) is connected to the atmosphere. The second connection port (552) of the water outlet solenoid valve (61) is connected to the first connection port (551) of the negative pressure solenoid valve (53) via a third connection air pipe (563), and the third connection port (553) of the water outlet solenoid valve (61) is connected to the water outlet cylinder via a second connection air pipe (562). The second connection port (552) of the negative pressure solenoid valve (53) is connected to the first diaphragm pump (511) via a first negative pressure air pipe (581), and the third connection port (553) of the negative pressure solenoid valve (53) is connected to the third end of the connecting tee (54) via a second negative pressure air pipe (582). The second connection port (552) of the positive pressure electromagnetic valve (52) is connected to the second diaphragm pump (511) through a first positive pressure air pipe (571), and the third connection port (553) of the positive pressure electromagnetic valve (52) is connected to the second end of the connecting tee (54) through a second positive pressure air pipe (572). The first end of the connecting tee (54) is connected to the extraction cup assembly (2) via a fourth connecting air pipe (564).

6. The high-pressure swing-stirring beverage extraction device according to claim 5, characterized in that: The beverage extraction equipment includes a positive pressure working state, a negative pressure working state and a water outlet working state. In the positive pressure working state, the water outlet solenoid valve (61) is powered off, the atmosphere or nitrogen is connected to the first connection port (551) of the water outlet solenoid valve (61), the first connection port (551) of the water outlet solenoid valve (61) is connected to the second connection port (552) of the water outlet solenoid valve (61), the third connection port (553) of the water outlet solenoid valve (61) is relatively isolated from the first connection port (551) and the second connection port (552), and the water outlet cylinder is relatively isolated from the water outlet solenoid valve (61). The negative pressure solenoid valve (53) is powered off, the first connection port (551) of the negative pressure solenoid valve (53) is connected to the second connection port (552) of the negative pressure solenoid valve (53), the third connection port (553) of the negative pressure solenoid valve (53) is relatively isolated from the first connection port (551) and the second connection port (552), and the negative pressure solenoid valve (53) is relatively isolated from the connecting tee (54). The positive pressure solenoid valve (52) is energized, the second connection port (552) of the positive pressure solenoid valve (52) is connected to the third connection port (553) of the positive pressure solenoid valve (52), the first connection port (551) of the positive pressure solenoid valve (52) is relatively isolated from the second connection port (552) and the third connection port (553), and the first connection port (551) of the positive pressure solenoid valve (52) is relatively isolated from the atmosphere. The water outlet solenoid valve (61), the third connecting air pipe (563), the negative pressure solenoid valve (53), the first negative pressure air pipe (581), the high pressure power assembly (51), the first positive pressure air pipe (571), the positive pressure solenoid valve (52), the second positive pressure air pipe (572) and the connecting tee (54) are connected in sequence to form the positive pressure airway, and the pressure in the extraction cup assembly (2) is 120-200 kPa; In the negative pressure working state, the negative pressure solenoid valve (53) is energized, the second connection port (552) of the negative pressure solenoid valve (53) is connected to the third connection port (553) of the negative pressure solenoid valve (53), the first connection port (551) of the negative pressure solenoid valve (53) is relatively isolated from the second connection port (552) and the third connection port (553), and the negative pressure solenoid valve (53) is relatively isolated from the water outlet solenoid valve (61). The positive pressure solenoid valve (52) is powered off, the atmosphere is connected to the first connection port (551) of the positive pressure solenoid valve (52), the first connection port (551) of the positive pressure solenoid valve (52) is connected to the second connection port (552) of the positive pressure solenoid valve (52), the third connection port (553) of the positive pressure solenoid valve (52) is relatively isolated from the first connection port (551) and the second connection port (552), and the positive pressure solenoid valve (52) is relatively isolated from the connecting tee (54). The positive pressure solenoid valve (52), the first positive pressure air pipe (571), the high pressure power assembly (51), the first negative pressure air pipe (581), the second negative pressure air pipe (582), the connecting tee (54) and the fourth connecting air pipe (564) are connected in sequence to form the negative pressure airway, and the pressure in the extraction cup assembly (2) is -70 to -85 kPa; In the water outlet working state, the water outlet solenoid valve (61) is energized, the second connection port (552) of the water outlet solenoid valve (61) is connected to the third connection port (553) of the water outlet solenoid valve (61), the first connection port (551) of the water outlet solenoid valve (61) is relatively isolated from the second connection port (552) and the third connection port (553), the atmosphere or nitrogen is relatively isolated from the water outlet solenoid valve (61), and the water outlet solenoid valve (61) is connected to the water outlet cylinder. The negative pressure solenoid valve (53) is powered off, the first connection port (551) of the negative pressure solenoid valve (53) is connected to the second connection port (552) of the negative pressure solenoid valve (53), the third connection port (553) of the negative pressure solenoid valve (53) is relatively isolated from the first connection port (551) and the second connection port (552), and the negative pressure solenoid valve (53) is relatively isolated from the connecting tee (54). The positive pressure solenoid valve (52) is energized, the second connection port (552) of the positive pressure solenoid valve (52) is connected to the third connection port (553) of the positive pressure solenoid valve (52), the first connection port (551) of the positive pressure solenoid valve (52) is relatively isolated from the second connection port (552) and the third connection port (553), and the first connection port (551) of the positive pressure solenoid valve (52) is relatively isolated from the atmosphere; During extraction, the beverage extraction equipment switches alternately between a positive pressure working state and a negative pressure working state.

7. The high-pressure swing-stirring beverage extraction device according to claim 6, characterized in that: The water outlet one-way valve (62) includes a sealing valve disc (621), a valve stem (622) and a valve disc reset spring (624). The sealing valve disc (621) is fixedly mounted on the upper end of the valve stem (622). The valve stem (622) is slidably mounted on the water outlet hole (25). The outer diameter of the sealing valve disc (621) is larger than the inner diameter of the water outlet hole (25). A limiting step (623) is formed at the lower end of the valve stem (622). The valve disc reset spring (624) is sleeved on the valve stem (622). The upper end of the valve disc reset spring (624) abuts against the bottom surface of the extraction cup assembly (2). The lower end of the valve disc reset spring (624) abuts against the limiting step (623). The second end of the water outlet lever (63) abuts against the lower end of the valve stem (622). The water outlet cylinder comprises a cylinder cover (641), a cylinder sealing ring (645) and a cylinder return spring (646). The housing (1) is provided with a cylinder groove. The cylinder cover (641) is slidably installed in the cylinder groove. The upper end surface of the cylinder cover (641) is provided with a driving column (642). The lower end surface of the cylinder cover (641) is provided with a connecting column (644). The center of the cylinder groove is provided with a cylinder fixing column (131). The cylinder fixing column (131) is provided with a connecting groove with an opening facing upward. The connecting column (644) is movably inserted in the connecting groove. The cylinder return spring (646) is sleeved on the cylinder fixing column (131). The upper end of the cylinder return spring (646) abuts against the cylinder cover (641) and the lower end abuts against the cylinder groove. The upper end of the driving column (642) is provided with a driving part (643). The lower end surface of the driving part (643) abuts against the water outlet. The first end of the lever (63) and the cylinder sealing ring (645) are sleeved on the side wall of the cylinder cover (641), and the outer periphery of the cylinder sealing ring (645) is against the side wall of the cylinder groove. The cylinder cover (641) is vertically opened with a constant pressure hole (648) that passes through the cylinder cover (641). A constant pressure driving chamber (647) is formed between the cylinder cover (641) and the cylinder groove. The upper end of the constant pressure hole (648) is connected to the atmosphere, and the lower end is connected to the driving chamber (647). The driving chamber (647) is connected to the second connecting port (552) of the water outlet solenoid valve (61) through the second connecting air pipe (562). In the water outlet working state, the high-pressure extraction device evacuates the driving chamber (647) to realize the downward movement of the driving cylinder cover (641) to drive the water outlet lever (63) upward to press the valve stem (622) to open the water outlet hole (25).

8. The high-pressure swing-stirring beverage extraction device according to claim 7, characterized in that: The extraction cup assembly (2) comprises a cup body (21) and a cup cover (22). The cup cover (22) is sealed and arranged on the upper part of the cup body (21). The cup body (21) is movably mounted on the extraction installation groove (11). A positioning boss (23) extends downward from the bottom surface of the cup body (21). The corresponding extraction installation groove (11) is provided with a positioning groove. The positioning boss (23) is plugged into and matched with the positioning groove. A ventilation column (24) is vertically arranged in the cup body (21), the upper end of the ventilation column (24) extends to the upper end of the cup body (21) and has a gap with the cup cover (22), the ventilation column (24) is provided with a ventilation hole (241), the upper end of the ventilation hole (241) is communicated with the inner cavity of the cup body (21), and the lower end of the ventilation hole (241) is connected to the first end of the connecting tee (54) through the fourth connecting air pipe (564).

9. The high-pressure swing-stirring beverage extraction device according to claim 8, characterized in that: A water outlet funnel (65) is movably installed below the water outlet hole (25), a water inlet (651) is provided on the upper portion of one side of the water outlet funnel (65), and a water outlet (652) is provided on the lower portion of the other side. The water outlet hole (25) is communicated with the water inlet (651), a first magnet (653) is provided on the upper portion of the water outlet funnel (65), and the housing (1) is provided with a second magnet (654). The first magnet (653) and the second magnet (654) are magnetically attracted to each other. The upper portion of the barrel (3) is provided with a barrel cover (33), which covers the upper portion of the barrel (3), and a plurality of buckles are provided at intervals on the outer periphery of the barrel cover (33), each buckle being connected to the barrel (3) by a buckle. A detection switch for detecting the cup body (21) is also provided on one side of the extraction installation tank (11); the detection switch is electrically connected to the control circuit, and the cup body (21) is triggered to cooperate with the detection switch.

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