Coffee cold brew liquid ultra-high pressure extraction equipment and extraction process

Abstract

The present application relates to coffee cold extraction liquid ultra-high pressure extraction equipment technical field, specifically to a kind of coffee cold extraction liquid ultra-high pressure extraction equipment and extraction process, including extraction equipment ontology, the one side of the extraction equipment ontology is provided with liquid supplementing device, further include: for inductive material volume micro shrinkage change and automatically adjust extraction length of time inductive adjustment mechanism, the inductive adjustment mechanism includes conveying pipe.The present application is by being equipped with inductive adjustment mechanism and other components, by the cooperation between each component, the cooperation relationship that float ball inductive liquid supplementing flow change and drive connecting rod rotation, so that moving block can be controlled by position change extrusion block and the trigger state of extension block, further reached the effect that the device can be based on the volume micro shrinkage change of coffee cell rupture and realizes extraction end point automatic detection, without manually setting extraction time, adaptive different varieties, roasting degree and grind degree material, from root to solve the problem of traditional timing control exists extraction deficiency or over-extraction.

Description

Technical Field

[0001] This invention relates to the field of ultra-high pressure extraction equipment for cold brew coffee, specifically to an ultra-high pressure extraction device and extraction process for cold brew coffee. Background Technology

[0002] Coffee is a globally popular beverage made from roasted coffee beans that have been ground and extracted. It is rich in caffeine and polyphenols, and has a rich and complex flavor profile. The ultra-high pressure extraction equipment for cold brew coffee is the core device for the industrial production of cold brew coffee. It applies ultra-high pressure at room temperature to break down the coffee cell structure, shortening the extraction time of traditional cold brew and fully preserving the aroma, nutrients and smooth taste of coffee.

[0003] Traditional high-pressure extraction equipment generally relies on preset timer start-stop control during use. However, due to differences in coffee material type, roasting degree, and grind size, the optimal extraction time varies for different batches of materials. Fixed timing cannot accurately match the actual extraction needs of each batch of materials, which can easily lead to under-extraction or over-extraction. This not only causes inconvenience during use but also reduces the extraction efficiency and product quality stability of the high-pressure extraction equipment. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides an ultra-high pressure extraction device for cold brew coffee, which can effectively solve the problems of insufficient or excessive extraction caused by reliance on preset timing control in existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides an ultra-high pressure extraction device for coffee cold brew, comprising an extraction device body, a liquid replenishment device disposed on one side of the extraction device body, and further comprising: A sensing and adjusting mechanism for sensing minute changes in material volume and automatically adjusting extraction time includes a conveying pipe. One end of the conveying pipe is connected to a replenishing device, and the other end is connected to the extraction equipment body. A float is installed inside the conveying pipe. A connecting rod is hinged to the bottom of the float. A moving rod is slidably connected to the surface of the other end of the connecting rod. A moving block is hinged to the other end of the moving rod. A squeezing block is slidably connected to the bottom of the moving block. An extension block is slidably connected to the bottom of the squeezing block. A micro switch is fixedly connected to one side of the extension block. The micro switch is electrically connected to the pressure relief valve of the extraction equipment body through a controller. A pneumatic damping column is installed on one side of the micro switch. A moving trigger block is fixedly connected to the input end of the pneumatic damping column.

[0006] Furthermore, both ends of the delivery pipe are connected to the liquid replenishment device and the extraction equipment body respectively through one-way valves. The extrusion block is elastically connected to the support box through an elastic telescopic rod, and the support box and the extension block are elastically connected through a movable telescopic rod. The support box is fixedly connected to the delivery pipe. The moving rod is elastically connected to the connecting rod through an extension telescopic rod. The pneumatic damping column is fixedly connected to the extension block. The rotating end of the connecting rod is rotatably connected to the delivery pipe.

[0007] Furthermore, it also includes a flow self-testing component for automatically detecting the replenishment flow rate status. The flow self-testing component includes a self-testing tube, one end of which is connected to the delivery tube, and the other end of which is connected to the extraction device body. A piston ring is provided on the side of the self-testing tube near the extraction device body. A sealing column is slidably connected to the surface of the piston ring, and the sealing column is fixedly connected to the extraction device body. The sealing column is elastically connected to the piston ring through a support telescopic rod. An impeller is rotatably connected inside the self-testing tube, and an indicator component is provided on one side of the impeller.

[0008] Furthermore, the indicator component includes an indicator light, which is installed on the extraction device body in a position that is easy to observe. The indicator light is electrically connected to a reset switch via a wire, and the reset switch is located at the bottom of the extrusion block and is fixedly connected to the delivery pipe. A warning rotating ring is fixedly connected to the outside of the impeller.

[0009] Furthermore, it also includes a rotary reset assembly for using a self-test power reset sensing adjustment mechanism. The rotary reset assembly includes a pressure box, which is fixedly connected to the self-test tube. A pressure plate is slidably connected inside the pressure box, and the pressure plate is elastically connected to the pressure box via a reset telescopic rod. Several sets of connecting plates are fixedly connected to the bottom of the pressure plate, and the connecting plates are located at the top of the impeller. A clamping plate is provided at the bottom of the pressure plate, and the clamping plate is slidably connected to the pressure box. A clamping groove is provided at the top of the clamping plate, and a clamping block is inserted into the groove. The clamping block and the clamping plate are rotatably connected via a torsion spring. A pushing block is fixedly connected to the top of the pressure plate, and the pushing block is slidably connected to the squeezing block.

[0010] Furthermore, a connecting post is fixedly connected to the top of the card plate, a connecting rod is slidably connected inside the connecting post, and the connecting rod is fixedly connected to the pressing block. The card plate is elastically connected to the pressure box through a friction damping rod.

[0011] Furthermore, an inclined block is fixedly connected to the top of the card plate, and a movable block is slidably connected to one side of the inclined block, and the movable block is fixedly connected to the pressure plate.

[0012] Furthermore, a sealing plate is fixedly connected to one side of the pressure plate, and the sealing plate is slidably connected to the inside of the pressure box. The other end of the pressure box is connected to the connecting rod through a hose. A flow hole is provided at the end of the connecting rod near the moving rod, and the flow hole is connected to the hose.

[0013] Furthermore, a guide block is fixedly connected to one side of the connecting rod, and a strong magnetic block is magnetically connected to one side of the guide block, and the strong magnetic block is fixedly connected to the conveying pipe.

[0014] An extraction process for a coffee cold brew liquid ultra-high pressure extraction device, the process comprising: S01: Check the status of the extraction equipment body, confirm that the sensing and adjustment mechanism is in the initial locked state, and that the liquid level of the replenishment device is up to standard. S02: Place the coffee packet into the high-pressure chamber of the extraction equipment body, and close and lock the high-pressure chamber door; S03: Start the pressurization system of the extraction equipment body to pressurize the high-pressure chamber to the preset ultra-high pressure value and enter the stable pressure extraction state; S04: Coffee cells rupture under ultra-high pressure, causing the material volume to shrink. The liquid replenishment device automatically replenishes the liquid, pushing the float to move. The sensing and adjustment mechanism unlocks and enters the ready-to-trigger state. S05: After the material volume stabilizes, the float remains stationary. The pneumatic damping column triggers the micro switch after a delay, and the controller controls the pressure relief valve to release pressure and automatically stop the extraction. S06: After depressurization, the liquid replenishment device enters the self-test mode. Water flows through the self-test tube to drive the impeller to rotate. The rotation reset component uses water flow power to drive the induction adjustment mechanism to reset automatically. S07: After the reset is completed, the prompt component sends a completion signal. Open the reactor door, remove the material bag, and the equipment returns to standby mode.

[0015] Beneficial effects The technical solution provided by this invention has the following advantages compared with the known prior art: I. This invention, through the setting of components such as a sensing and adjustment mechanism, and the cooperation between these components, such as the float sensing changes in the replenishment flow and driving the connecting rod to rotate, enables the moving block to control the triggering state of the extrusion block and the extension block through position changes. This achieves the effect of automatically detecting the extraction endpoint based on the slight volume reduction caused by the rupture of coffee cells, eliminating the need for manual setting of extraction time. It is adaptable to materials of different varieties, roasting levels, and grind levels, fundamentally solving the problems of under-extraction or over-extraction in traditional timed control.

[0016] Second, by setting up components such as the flow self-testing assembly, the present invention achieves a sealing relationship between the piston ring and the sealing column using the system's own pressure. This allows the self-testing path to be automatically cut off during high-pressure extraction and automatically opened after low-pressure depressurization. Thus, the device can achieve complete isolation and automatic switching between extraction detection and flow self-testing. At the same time, the mechanical display of the indicator ring and the circuit prompts of the indicator lights provide dual protection, intuitively reflecting the status of the replenishment system and the completion of the process, improving the reliability and ease of operation of the equipment.

[0017] Third, by setting up components such as a rotary reset assembly, and through the connection plate receiving the rotational power of the impeller and driving the pressure plate to move in one direction, the reset mechanism can operate automatically using the power of the self-testing water flow. This achieves the effect of fully automatic cyclic reset of the entire process using pure mechanical means. Combined with the negative pressure drive moving rod reset and strong magnetic positioning structure, the reset force is stable and uniform without mechanical wear, and the action is precise and stable. No additional motor or manual operation is required, reducing equipment cost and failure rate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a partial side view schematic diagram of the present invention; Figure 3 This is a schematic diagram of the sensing adjustment mechanism of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the flow self-testing component of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle; Figure 7 This is a schematic diagram of the rotary reset assembly of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of point C in the middle; Figure 9 For the present invention Figure 7 Enlarged view of point D; Figure 10 This is a schematic diagram of the guide block of the present invention.

[0020] Reference numerals: 1. Extraction equipment body; 2. Liquid replenishment device; 3. Induction adjustment mechanism; 31. Delivery pipe; 32. Float; 33. Connecting rod; 34. Moving rod; 35. Moving block; 36. Squeezing block; 37. Extending block; 38. Micro switch; 39. Pneumatic damping column; 4. Support box; 5. Flow self-test assembly; 51. Self-test tube; 52. Piston ring; 53. Sealing column; 54. Impeller; 55. Indication assembly; 551. Indicator light; 552. Reset switch; 553. Highlighting rotating ring; 6. Rotary reset assembly; 61. Pressure box; 62. Pressure plate; 63. Connecting plate; 64. Card plate; 65. Card slot; 66. Card block; 67. Pushing block; 7. Connecting column; 8. Connecting rod; 9. Tilting block; 10. Moving block; 11. Sealing plate; 12. Guide block; 13. Strong magnetic block. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to embodiments.

[0023] See attached document Figure 1-10 A coffee cold brew liquid ultra-high pressure extraction device includes: an extraction device body 1, a liquid replenishment device 2 provided on one side of the extraction device body 1, the extraction device body 1 being the core pressure-bearing component of the ultra-high pressure extraction device, having a high-pressure chamber inside for containing coffee powder and bearing a preset ultra-high pressure value to achieve high-pressure extraction of the material; the liquid replenishment device 2 being connected to the extraction device body 1 through a delivery pipe 31, for continuously replenishing liquid into the high-pressure chamber during the extraction process to maintain stable system pressure and compensate for pressure fluctuations caused by changes in material volume or system leakage; The device also includes a sensing and adjusting mechanism 3 for sensing the slight changes in material volume and automatically adjusting the extraction time. The sensing and adjusting mechanism 3 includes a conveying pipe 31, one end of which is connected to the liquid replenishment device 2, and the other end of which is connected to the extraction equipment body 1. A float 32 is provided inside the conveying pipe 31. A connecting rod 33 is hinged to the bottom of the float 32. The rotating end of the connecting rod 33 is rotatably connected to the conveying pipe 31. A moving rod 34 is slidably connected to the surface of the other end of the connecting rod 33. A moving block 35 is hinged to the other end of the moving rod 34. A squeezing block 36 is slidably connected to the bottom of the moving block 35. An extension block 37 is slidably connected to the bottom of the squeezing block 36. A micro switch 38 is fixedly connected to one side of the extension block 37. The micro switch 38 is prior art. The micro switch 38 is electrically connected to the pressure relief valve of the extraction equipment body 1 through a controller. A pneumatic damping column 39 is provided on one side of the micro switch 38. A moving trigger block is fixedly connected to the input end of the pneumatic damping column 39. The delivery pipe 31 connects the replenishment device 2 and the extraction equipment body 1, providing a sealed movement space for the float 32. The float 32 generates a corresponding linear displacement as the replenishment flow rate changes, directly converting the fluid flow signal into mechanical action. The connecting rod 33 uses its rotating end as a fulcrum to convert the linear motion of the float 32 into the swing of the other end. The moving rod 34 receives the swing force of the connecting rod 33 and converts it into a horizontal linear thrust. The moving block 35 moves synchronously with the moving rod 34, controlling the pressing and releasing of the squeezing block 36 through position changes. The squeezing block 36 controls the extension and retraction state of the extension block 37 through inclined plane cooperation. After the extension block 37 extends, the micro switch 38 is in a ready state that can be triggered. The pneumatic damping column 39 supports the moving block 35. The movement of the float 32 is buffered and filtered to absorb the slight displacement of the moving block 35 caused by water flow and pressure fluctuations. Only when the float 32 remains stationary and the moving block 35 acts stably will the input end of the pneumatic damping column 39 move slowly. The input end of the pneumatic damping column 39 drives the moving trigger block to move. After moving to a certain extent, it triggers the micro switch 38. The micro switch 38 converts the mechanical signal into an electrical signal, which controls the opening and closing of the pressure relief valve through the controller. The controller is existing technology and is not shown in the figure. The whole system realizes automatic detection of the extraction endpoint based on the change in the volume of coffee cell rupture. There is no need to manually set the extraction time. It is adaptable to materials with different roasting and grinding degrees, and completely solves the problem of under-extraction or over-extraction in traditional timed control. The two ends of the delivery pipe 31 are connected to the liquid replenishment device 2 and the extraction equipment body 1 respectively through one-way valves. The extrusion block 36 is elastically connected to the support box 4 through the elastic telescopic rod, and the support box 4 is elastically connected to the extension block 37 through the movable telescopic rod. The support box 4 is fixedly connected to the delivery pipe 31. The moving rod 34 is elastically connected to the connecting rod 33 through the extension telescopic rod. The pneumatic damping column 39 is fixedly connected to the extension block 37. The one-way valve controls the water flow to flow only from the liquid replenishment device 2 to the extraction equipment body 1 to prevent the liquid in the high-pressure chamber from flowing back and to ensure the stability of the system pressure. The support box 4 serves as the unified mounting base for the trigger mechanism, centrally fixing the extrusion block 36, the extension block 37, and various elastic components to ensure the accurate relative position of each component. The elastic telescopic rod provides an upward reset force for the extrusion block 36, the movable telescopic rod provides an outward reset force for the extension block 37, and the extension telescopic rod provides a continuous thrust for the moving rod 34. The three work together to ensure that the movement of each component is accurate and in place, without jamming or delay. See attached document Figure 1-7 It also includes a flow self-testing assembly 5 for automatically detecting the replenishment flow rate. The flow self-testing assembly 5 includes a self-testing tube 51, one end of which is connected to the delivery tube 31, and the other end of which is connected to the extraction device body 1. A piston ring 52 is provided on the side of the self-testing tube 51 near the extraction device body 1. A sealing column 53 is slidably connected to the surface of the piston ring 52, and the sealing column 53 is fixedly connected to the extraction device body 1. The sealing column 53 is elastically connected to the piston ring 52 through a support telescopic rod. An impeller 54 is rotatably connected inside the self-testing tube 51, and one side of the impeller 54 is provided with... The system includes a prompting component 55; the self-test tube 51 forms a flow self-test path completely independent of the detection path; the piston ring 52, sealing column 53, and support telescopic rod form a pressure-sensitive automatic sealing mechanism; when the system is under high pressure, the piston ring 52 is pushed against the sealing column 53 to form an end face seal, automatically cutting off the self-test path; after the system is depressurized, the support telescopic rod pushes the piston ring 52 back to its original position, automatically opening the self-test path; the impeller 54 rotates with the self-test water flow, and its rotation speed directly corresponds to the replenishment flow rate; the prompting component 55 converts the rotation status of the impeller 54 into intuitive operating information, making it easy for operators to quickly determine whether the replenishment system is normal; The indicator component 55 includes an indicator light 551, which is installed on the extraction device body 1 in an easily observable position. The indicator light 551 is electrically connected to a reset switch 552 via a wire. The reset switch 552 is located at the bottom of the extrusion block 36 and is fixedly connected to the delivery pipe 31. A warning ring 553 is fixedly connected to the outside of the impeller 54. The warning ring 553 rotates synchronously with the impeller 54, and the rotation status is visually displayed to indicate whether the self-test water flow is normal, achieving rapid judgment of the flow status without additional circuitry. The indicator light 551 is used to display the dual status of self-test completion and mechanism reset completion. The reset switch 552 is triggered by the reset extrusion block 36. The reset of the extrusion block 36 indicates that the entire sensing and regulating mechanism 3 has returned to its initial position, which also means that the extraction process is over and the self-test process is complete and qualified. When the extrusion block 36 is reset, pressing the reset switch 552 will simultaneously illuminate the indicator light 551 to indicate that the reset is complete and prepare for the next extraction. See attached document Figure 1-10 It also includes a rotary reset assembly 6 for using the self-test power reset sensing adjustment mechanism 3. The rotary reset assembly 6 includes a pressure box 61, which is fixedly connected to the self-test tube 51. A pressure plate 62 is slidably connected inside the pressure box 61, and the pressure plate 62 is elastically connected to the pressure box 61 through a reset telescopic rod. Several sets of connecting plates 63 are fixedly connected to the bottom of the pressure plate 62, and the connecting plates 63 are located on the top of the impeller 54. A retaining plate 64 is provided at the bottom of the pressure plate 62, and the retaining plate 64 is slidably connected to the pressure box 61. A retaining groove 65 is opened at the top of the retaining plate 64, and a retaining block 66 is inserted into the groove 65. The retaining block 66 and the retaining plate 64 are rotatably connected through a torsion spring. A push block 67 is fixedly connected to the top of the pressure plate 62, and the push block 67 is slidably connected to the squeezing block 36; the pressure box 61 serves as the mounting carrier for the reset mechanism and also provides a sealed space for the sliding seal of the sealing plate 11; the reset telescopic rod provides reset elasticity for the pressure plate 62; the connecting plate 63 receives the rotational power of the impeller 54 and converts the periodic rotation of the impeller 54 into the unidirectional linear motion of the pressure plate 62; the clamping plate 64, the clamping block 66, and the clamping groove 65 together form a unidirectional limiting structure to ensure that the pressure plate 62 can only move in the reset direction and prevent backtracking during the reset process; the push block 67 moves synchronously with the pressure plate 62 and transmits power to the squeezing block 36, driving the entire sensing adjustment mechanism 3 to complete the reset; The top of the clamping plate 64 is fixedly connected to a connecting column 7, and a connecting rod 8 is slidably connected inside the connecting column 7. The connecting rod 8 is fixedly connected to the extrusion block 36. The clamping plate 64 is elastically connected to the pressure box 61 through a friction damping rod. The connecting column 7 and the connecting rod 8 form a displacement transmission structure, which transmits the position change of the extrusion block 36 to the clamping plate 64 in real time during the extraction process. The friction damping rod provides a constant static friction force to the clamping plate 64, so that it remains stable in position when no external force is applied, and avoids the pressure plate 62 from accidentally resetting. The top of the clamping plate 64 is fixedly connected to an inclined block 9, and a movable block 10 is slidably connected to one side of the inclined block 9. The movable block 10 is fixedly connected to the pressure plate 62. The inclined block 9 and the movable block 10 cooperate so that when the pressure plate 62 moves to the limit position, the movable block 10 pushes the inclined block 9 to return the pressure plate 62 to the initial position, so that the cyclic operation of the reset mechanism can be realized without additional power. A sealing plate 11 is fixedly connected to one side of the pressure plate 62, and the sealing plate 11 is slidably connected to the inside of the pressure box 61. The other end of the pressure box 61 is connected to the connecting rod 33 via a flexible hose. A flow hole is provided at the end of the connecting rod 33 near the moving rod 34, and the flow hole is connected to the flexible hose. The sealing plate 11 and the inner wall of the pressure box 61 form a sealed air cavity. When the pressure plate 62 moves, it drives the sealing plate 11 to slide synchronously, automatically expanding the volume of the air cavity to generate negative pressure. The flexible hose and the flow hole on the connecting rod 33 form a negative pressure transmission channel, which evenly transmits the negative pressure in the pressure box 61 to the end face of the moving rod 34. The whole system utilizes external... Atmospheric pressure drives the moving rod 34 to retract and reset along the surface of the connecting rod 33, with a stable and uniform reset force. A guide block 12 is fixedly connected to one side of the connecting rod 33, and a strong magnetic block 13 is magnetically connected to one side of the guide block 12, with the strong magnetic block 13 fixedly connected to the delivery pipe 31. The guide block 12 precisely limits the rotation range of the connecting rod 33, ensuring a stable linear relationship between the displacement of the float 32 and the rotation of the connecting rod 33, thereby improving detection accuracy. The strong magnetic block 13 attracts the guide block 12, keeping the connecting rod 33 stable in its initial position, preventing malfunctions caused by shaking during equipment standby, and accelerating the reset speed after each extraction. It is worth noting that the telescopic rods in this technical solution—elastic telescopic rods, movable telescopic rods, extending telescopic rods, supporting telescopic rods, and reset telescopic rods—are existing technologies. They perform either compression reset or tension reset functions according to usage requirements. In actual use, any existing technology component capable of achieving the corresponding reset function, such as a nitrogen spring, hydraulic resetter, or magnetic reset assembly, can be directly replaced to meet actual usage needs. The friction damping rod is existing technology, used to provide constant static friction to prevent accidental displacement, and can also be directly replaced based on its function. Each telescopic rod and damping rod is equipped with a guide sleeve or guide key to restrict the rod body to move only axially and prevent bending; these are not shown in the figures. All moving parts... Components such as float 32, connecting rod 33, moving rod 34, moving block 35, squeezing block 36, extending block 37, and piston ring 52 are all equipped with corresponding limit rings, guide grooves, or buffer pads to ensure accurate and reliable operation. However, these are all existing technologies and are not shown in this technical solution. All gas and liquid flow path connections adopt dynamic or static sealing structures to prevent leakage and ensure pressure stability and transmission efficiency. The one-way valves at both ends of the delivery pipe have the following directions: from the liquid replenishment device 2 to the delivery pipe 31, and from the delivery pipe to the extraction equipment body 1. Conventional limit, control circuits, and power supply are all existing technologies. Protective or limit structures can be added as needed, and relevant components can be appropriately replaced or adjusted according to the working conditions.

[0024] Working principle: When in use, place the packaged coffee packet into the extraction equipment body 1, close the high-pressure chamber door and start the equipment; the equipment applies ultra-high pressure to the packet, and enters the pressure-stabilized extraction state after the system pressure stabilizes; at this time, the coffee cells in the packet have not broken down in large numbers, and the overall volume of the material remains basically unchanged. The liquid replenishment device 2 replenishes water to the high-pressure chamber at a constant baseline flow rate to compensate for minor leaks in the system; the float 32 is stationary in the initial position, the moving block 35 presses against the squeezing block 36, the squeezing block 36 presses against the protruding block 37, and the entire sensing and adjustment mechanism 3 is in a locked state; The high pressure inside the system acts on the end face of the piston ring 52, pushing the piston ring 52 to compress the support telescopic rod, so that the piston ring 52 and the end face of the sealing column 53 are tightly fitted to form a reliable static seal; at this time, the self-test passage is completely cut off, and the replenishing water cannot enter the self-test tube 51. Instead, it flows through the delivery tube 31 to the high pressure chamber, ensuring that the flow rate of the detection passage is not disturbed during the extraction process and ensuring the accuracy of the float 32's action. As the pressure stabilization time increases, the coffee cell walls inside the feed bag continue to rupture under ultra-high pressure, releasing soluble substances into the water, and the overall volume of the solid-liquid mixture continuously shrinks. To maintain the pressure stability of the high-pressure chamber, the replenishment device 2 automatically increases the water supply, with the flow rate changing synchronously with the degree of volume shrinkage. The water flows through the one-way valve into the delivery pipe 31, pushing the float 32 inside the pipe to move towards the extraction device body 1, and the water then flows into the high-pressure chamber to fill the shrinking volume. This process is entirely based on the volume change of the material itself to achieve automatic control, without the need for manual setting of the extraction time, and can adapt to different varieties, roasting levels, and grind sizes of coffee materials. The movement of float 32 drives the synchronous displacement of moving rod 34 at the other end through the rotation fulcrum of connecting rod 33. Moving rod 34 drives the hinged moving block 35 to slide horizontally. Moving block 35 disengages from the squeezing block 36 below. Squeezing block 36 moves upward under the upward thrust of elastic telescopic rod. After losing the downward pressure of squeezing block 36, protruding block 37 extends outward under the thrust of movable telescopic rod. At the same time, under the elastic push of the extension telescopic rod, moving rod 34 drives moving block 35 to abut against one side of pneumatic damping column 39. Pneumatic damping column 39 can filter out the small displacement caused by water flow fluctuations and pressure fluctuations, preventing the micro switch 38 from being accidentally triggered. At this time, extraction is still ongoing, coffee cells are constantly breaking down and shrinking in volume. The water supply flow rate is kept above the baseline level. Float 32 is always in a dynamic moving state, and moving block 35 does not continuously and stably act on pneumatic damping column 39. When most of the coffee cells in the feed bag have broken down and the volume of the material no longer changes, the water flow rate of the replenishment device 2 immediately drops back to the baseline value; the water flow thrust disappears, the float 32 stops moving and remains stationary, thus allowing the moving block 35 to continuously and stably act on the pneumatic damping column 39; after a preset delay confirmation, after eliminating the interference of brief fluctuations, the moving trigger block at the input end of the pneumatic damping column 39 is slowly pushed, triggering the micro switch 38; the micro switch 38 sends a signal through the controller to open the pressure relief valve of the extraction equipment body 1, the system quickly depressurizes, and completes the automatic stop of extraction; this design completely solves the problem of insufficient or excessive extraction in traditional timed control, ensuring the consistency of the quality of each batch of finished product; After extraction is completed and pressure is released, the replenishment device 2 continues to supply water and automatically enters the flow self-check mode to prevent the equipment from failing to shut down normally due to replenishment failure. After the water pressure inside the extraction equipment body 1 disappears, the support telescopic rod pushes the piston ring 52 to move, releasing the seal between the piston ring 52 and the sealing column 53. Since the water flow needs to overcome resistance through the one-way valve at the outlet of the delivery pipe 31, while there is no resistance in the self-check pipe 51, the replenishment water flow preferentially flows into the self-check pipe 51, driving the impeller 54 inside the self-check pipe 51 to rotate. The rotation status of the impeller 54 can directly reflect whether the replenishment flow is normal. If the impeller 54 stops rotating, it indicates that the replenishment pipeline is blocked or the pump body is faulty. During the extraction process, the extrusion block 36 moves the clamping plate 64 via the connecting rod 8. The clamping plate 64 engages with the clamping block 66 via the clamping groove 65 to achieve unidirectional limiting of the pressure plate 62. The friction damping rod can fix the position of the clamping plate 64, keeping it stable when no external force is applied, and preventing the pressure plate 62 from accidentally resetting. When the impeller 54 rotates, its top end periodically pushes the connecting plate 63, causing the pressure plate 62 to move continuously in one direction. The pressure plate 62 pushes the extrusion block 36 to reset via the pushing block 67, and the extrusion block 36 simultaneously drives the extension block 37 to reset. The movement of the pressure plate 62 also causes the sealing plate 11 to slide, expanding the pressure box. The internal space of 61 is reduced and the internal air pressure is decreased; the external atmospheric pressure acts on the inside of the connecting rod 33 through the hose, pushing the moving rod 34 to retract and slide along the surface of the connecting rod 33, and the float ball 32 drives the connecting rod 33 to reset under the action of buoyancy; after the pressure plate 62 moves to the limit position, it completes the downward reset through the cooperation of the movable block 10 and the tilting block 9; the guide block 12 limits the movement range of the connecting rod 33, and the strong magnetic block 13 attracts the guide block 12 to ensure that the connecting rod 33 moves stably and accurately; the entire reset process is fully powered by the self-testing water flow, without the need for additional motors or manual operation, realizing the fully automatic cyclic operation of the equipment.

[0025] An extraction process for a coffee cold brew liquid ultra-high pressure extraction device, the process comprising: S01: Equipment status check; Check that the inside of the extraction device 1 is clean, confirm that the sensing and adjusting mechanism 3 is in the initial locked state, the float 32 is in the initial position of the delivery pipe 31, the moving block 35 presses the squeezing block 36, and the protruding block 37 retracts; check the replenishment device 2 to confirm that the water supply system is normal. S02: Material loading and vessel door sealing; Place the packaged coffee packet smoothly into the high-pressure chamber of the extraction equipment body 1, ensuring that the packet is centered; close the high-pressure chamber door and tighten the locking mechanism evenly according to the specified torque to ensure that the sealing surface of the chamber door is completely in contact and the seal is reliable; S03: System boost and voltage regulation establishment; Start the pressurization system of the extraction equipment body 1, inject pure water into the high-pressure chamber and gradually increase the pressure to the preset ultra-high pressure value; after the system pressure stabilizes, it enters the pressure stabilization extraction state; at this time, the coffee cells in the material bag have not broken down in large numbers, the material volume remains basically unchanged, and the liquid replenishment device 2 replenishes water at a constant baseline flow rate to compensate for minor system leaks; S04: High-pressure extraction and sensing mechanism unlocked; During the pressure-stabilized extraction process, the coffee cell walls continuously rupture under ultra-high pressure, releasing soluble substances from the cells and causing the volume of the solid-liquid mixture to continuously shrink. The replenishment device 2 automatically increases the water supply, and the water flows through the one-way valve into the delivery pipe 31, pushing the float 32 to move towards the extraction equipment body 1. The float 32 drives the moving rod 34 and the moving block 35 to move synchronously through the connecting rod 33, and the moving block 35 is released from the squeezing of the squeezing block 36; the squeezing block 36 moves upward under the action of the elastic telescopic rod, and the extension block 37 extends outward under the action of the movable telescopic rod; the moving rod 34 drives the moving block 35 to stick to the pneumatic damping column 39 under the push of the extension telescopic rod, and the sensing adjustment mechanism 3 enters the ready-to-trigger state; the pneumatic damping column 39 filters water flow and pressure fluctuations to prevent the micro switch 38 from being triggered accidentally. S05: Automatic detection of extraction endpoint and pressure relief shutdown; When most of the coffee cells in the feed bag have broken down and the volume of the material no longer changes, the water flow rate of the replenishment device 2 drops back to the baseline value, and the float 32 stops moving and remains stationary. The moving block 35 continues to act stably on the pneumatic damping column 39. After a preset delay confirmation, the pneumatic damping column 39 is slowly pushed, triggering the micro switch 38. The micro switch 38 opens the pressure relief valve through the controller, the high-pressure chamber is quickly depressurized, and the equipment automatically stops extraction. S06: Self-test of the fluid replenishment system and fully automatic reset of the mechanism; After extraction is completed and pressure is released, the replenishment device 2 continues to supply water and enters the flow self-check mode; the support telescopic rod pushes the piston ring 52 to move, releasing the seal between the piston ring 52 and the sealing column 53; the replenishment water flows into the self-check pipe 51 first, driving the impeller 54 and the indicator rotating ring 553 to rotate synchronously, visually showing that the replenishment system is operating normally; When the impeller 54 rotates, its top end periodically pushes the connecting plate 63, causing the pressure plate 62 to move in one direction. The pressure plate 62 pushes the squeezing block 36 and the protruding block 37 to reset through the pushing block 67. At the same time, the pressure plate 62 causes the sealing plate 11 to slide, expanding the volume of the pressure box 61 to generate negative pressure, driving the moving rod 34 to retract and reset along the connecting rod 33. The float ball 32 drives the connecting rod 33 to reset under the action of buoyancy. After the pressure plate 62 moves to the limit position, it completes the downward reset through the cooperation of the movable block 10 and the tilting block 9. S07: Process completion and cycle preparation; When the extrusion block 36 is fully reset, the reset switch 552 is triggered, and the indicator light 551 is lit, indicating that the extraction and self-test process is complete. Open the high-pressure chamber door, take out the extracted coffee bag, and clean the residual liquid inside the high-pressure chamber. After the indicator light 551 goes out, the equipment automatically returns to the initial standby state and can be used for the next batch of extraction.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-pressure extraction device for cold brew coffee, comprising an extraction device body (1), wherein a liquid replenishment device (2) is provided on one side of the extraction device body (1), characterized in that: Also includes: A sensing and adjusting mechanism (3) is used to sense changes in the volume of materials and automatically adjust the extraction time. The sensing and adjusting mechanism (3) includes a conveying pipe (31), one end of which is connected to a replenishing device (2), and the other end of which is connected to the extraction equipment body (1). A float (32) is provided inside the conveying pipe (31). A connecting rod (33) is hinged to the bottom of the float (32). A moving rod (34) is slidably connected to the surface of the other end of the connecting rod (33). The other end of 34) is hinged to a moving block (35), the bottom of the moving block (35) is slidably connected to a squeezing block (36), the bottom of the squeezing block (36) is slidably connected to an extension block (37), a micro switch (38) is fixedly connected to one side of the extension block (37), and the micro switch (38) is electrically connected to the pressure relief valve of the extraction device body (1) through a controller. A pneumatic damping column (39) is provided on one side of the micro switch (38), and a moving trigger block is fixedly connected to the input end of the pneumatic damping column (39).

2. The ultra-high pressure extraction equipment for coffee cold brew liquid according to claim 1, characterized in that, The two ends of the delivery pipe (31) are connected to the liquid replenishment device (2) and the extraction equipment body (1) respectively through one-way valves. The extrusion block (36) is elastically connected to the support box (4) through the elastic telescopic rod. The support box (4) and the extension block (37) are elastically connected through the movable telescopic rod. The support box (4) is fixedly connected to the delivery pipe (31). The moving rod (34) is elastically connected to the connecting rod (33) through the extension telescopic rod. The pneumatic damping column (39) is fixedly connected to the extension block (37). The rotating end of the connecting rod (33) is rotatably connected to the delivery pipe (31).

3. The ultra-high pressure extraction equipment for coffee cold brew liquid according to claim 1, characterized in that, It also includes a flow self-testing component (5) for automatically detecting the replenishment flow status. The flow self-testing component (5) includes a self-testing tube (51), one end of which is connected to the delivery tube (31), and the other end of which is connected to the extraction device body (1). A piston ring (52) is provided on the side of the self-testing tube (51) near the extraction device body (1). A sealing column (53) is slidably connected to the surface of the piston ring (52), and the sealing column (53) is fixedly connected to the extraction device body (1). The sealing column (53) is elastically connected to the piston ring (52) through a support telescopic rod. An impeller (54) is rotatably connected inside the self-testing tube (51), and a prompting component (55) is provided on one side of the impeller (54).

4. The ultra-high pressure extraction equipment for coffee cold brew liquid according to claim 1, characterized in that, The prompting component (55) includes an indicator light (551), which is installed on the extraction device body (1) in a position that is easy to observe. The indicator light (551) is electrically connected to a reset switch (552) via a wire. The reset switch (552) is located at the bottom of the extrusion block (36) and is fixedly connected to the delivery pipe (31). A warning rotating ring (553) is fixedly connected to the outside of the impeller (54).

5. The ultra-high pressure extraction equipment for coffee cold brew liquid according to claim 1, characterized in that, It also includes a rotary reset assembly (6) for resetting the self-test power-driven induction adjustment mechanism (3). The rotary reset assembly (6) includes a pressure box (61) and is fixedly connected to the self-test tube (51). A pressure plate (62) is slidably connected inside the pressure box (61), and the pressure plate (62) is elastically connected to the pressure box (61) through a reset telescopic rod. Several sets of connecting plates (63) are fixedly connected to the bottom of the pressure plate (62), and the connecting plates (63) are positioned... At the top of the impeller (54), a card plate (64) is provided at the bottom of the pressure plate (62), and the card plate (64) is slidably connected to the pressure box (61). A card slot (65) is provided at the top of the card plate (64), and a card block (66) is inserted into the inside of the card slot (65). The card block (66) and the card plate (64) are rotatably connected by a torsion spring. A push block (67) is fixedly connected to the top of the pressure plate (62), and the push block (67) is slidably connected to the squeezing block (36).

6. The ultra-high pressure extraction equipment for coffee cold brew liquid according to claim 1, characterized in that, The top of the card plate (64) is fixedly connected to a connecting column (7), and a connecting rod (8) is slidably connected inside the connecting column (7). The connecting rod (8) is fixedly connected to the pressing block (36), and the card plate (64) is elastically connected to the pressure box (61) through a friction damping rod.

7. The ultra-high pressure extraction equipment for coffee cold brew liquid according to claim 1, characterized in that, An inclined block (9) is fixedly connected to the top of the card plate (64), and a movable block (10) is slidably connected to one side of the inclined block (9), and the movable block (10) is fixedly connected to the pressure plate (62).

8. The ultra-high pressure extraction equipment for coffee cold brew liquid according to claim 1, characterized in that, A sealing plate (11) is fixedly connected to one side of the pressure plate (62), and the sealing plate (11) is slidably connected to the inside of the pressure box (61). The other end of the pressure box (61) is connected to the connecting rod (33) through a hose. A flow hole is provided at one end of the connecting rod (33) near the moving rod (34), and the flow hole is connected to the hose.

9. The ultra-high pressure extraction equipment for coffee cold brew liquid according to claim 1, characterized in that, A guide block (12) is fixedly connected to one side of the connecting rod (33), and the guide block (12) is slidably connected to the conveying pipe (31). A strong magnetic block (13) is magnetically connected to one side of the guide block (12), and the strong magnetic block (13) is fixedly connected to the conveying pipe (31).

10. An extraction process for a coffee cold brew liquid ultra-high pressure extraction device, applied to any one of the coffee cold brew liquid ultra-high pressure extraction devices according to claims 1 to 9, characterized in that, The process includes: S01: Check the status of the extraction equipment body (1), confirm that the sensing adjustment mechanism (3) is in the initial locked state, and the liquid level of the replenishment device (2) meets the standard; S02: Place the coffee packet into the high-pressure chamber of the extraction device body (1), and close and lock the high-pressure chamber door; S03: Start the pressurization system of the extraction equipment body (1) to pressurize the high pressure chamber to the preset ultra-high pressure value and enter the stable pressure extraction state; S04: The coffee cells rupture under ultra-high pressure, causing the material volume to shrink. The liquid replenishment device (2) automatically replenishes the liquid, pushing the float (32) to move. The sensing and adjustment mechanism (3) unlocks and enters the waiting state. S05: After the material volume stabilizes, the float (32) remains stationary, the pneumatic damping column (39) triggers the micro switch (38) after a delay, and the controller controls the pressure relief valve to release pressure and automatically stop the extraction; S06: After depressurization, the liquid replenishment device (2) enters the self-test mode. Water flows through the self-test pipe (51) to drive the impeller (54) to rotate. The rotation reset component (6) uses water flow power to drive the induction adjustment mechanism (3) to reset automatically. S07: After the reset is completed, the prompt component (55) sends a completion signal, opens the reactor door to take out the material bag, and the equipment returns to standby mode.

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