Coffee bean fermentation reaction equipment and fermentation method

Abstract

The invention relates to the technical field of peeling equipment, in particular to coffee bean fermentation reaction equipment and a fermentation method.The coffee bean fermentation reaction equipment comprises a sleeve, a discharging funnel is arranged at one end of the sleeve, a feeding funnel is arranged at the end, away from the discharging funnel, of the sleeve, and a peeler is arranged in the sleeve; the peeler comprises a rotating drum rotationally arranged in the sleeve, a plurality of guide grooves evenly distributed in the circumferential direction are formed in the rotating drum, a through hole is formed in the middle of the rotating drum, connecting supports in one-to-one correspondence with the guide grooves are slidably arranged in the through hole, and rotating rollers located in the guide grooves are rotationally arranged on the connecting supports. The water filling degree and the expansion degree of the air bag are changed by adjusting the elastic force of the reset spring, then the contact force between the rotating roller and coffee beans is affected, the reset spring is compressed, part of pressure is absorbed, the buffering effect is provided, and the rotating roller is prevented from exerting too large pressure on the coffee beans; and the equipment can be adaptively adjusted according to different characteristics of coffee beans, so that the adaptability of the equipment is improved.

Description

Technical Field

[0001] The present application relates to the technical field of fermentation equipment, and in particular to a coffee bean fermentation reaction device and a fermentation method. Background Art

[0002] Hulling is a crucial step in the entire coffee bean processing process, especially during the fermentation stage. The purpose of hulling is to remove the skin, pulp, and pectin layer of the coffee cherry to facilitate subsequent fermentation and other processing steps. The following details the role of hulling in the coffee bean fermentation process, including methods, equipment, and precautions.

[0003] The primary purpose of shelling is to remove the outer skin and pulp of the coffee cherry, as well as the pectin layer adhering to the surface of the coffee bean. This outer layer contains a large amount of sugar and other organic matter. If not removed promptly, it will produce off-flavors during fermentation and affect the final flavor of the coffee bean. Shelling also promotes contact between the coffee bean and oxygen and microorganisms, thereby accelerating the fermentation process and promoting more uniform and full flavor development.

[0004] For example, the fermentation device with application number CN201580008255.5 relates to the field of food fermentation. The existing technology includes a kettle cylinder, a kettle cover on the top of the kettle cylinder, a vertical main pipe and a control frame provided in the kettle cylinder, the vertical main pipe passes through a through hole opened in the middle of the kettle cylinder, and two symmetrically distributed control frames are connected below the vertical main pipe. Positioning parts are provided above and below the control frame, and the positioning parts are connected between the kettle cylinder and the vertical main pipe. The vertical main pipe is a pipe body with both ends blocked. An internal pressure part is provided inside the upper half of the vertical main pipe, and one end of the internal pressure part is connected to the vertical main pipe. During the rotation and stirring process of the control frame, oxygen is continuously diffused into the reactor, and aerobic bacteria are fully supplied with oxygen, thereby ensuring that the fermentation of coffee beans continues. In addition, pneumatic control of oxygen supply is used to realize deformation management of the control frame, thereby changing the stirring range of the control frame, and realizing coordinated cooperation between stirring and oxygen supply.

[0005] However, the above existing technologies still have some defects when peeling coffee beans:

[0006] In the above-mentioned prior art, when fermenting, the prepared raw materials are first evenly placed in a container. Stirring can increase the contact area between the ingredients and oxygen, thereby promoting the fermentation of aerobic microorganisms. However, when fermenting coffee beans, there is a bean skin on the surface of the coffee beans. This layer of bean skin will hinder the contact between oxygen and the inside of the coffee beans during the fermentation process. The bean skin has poor air permeability. Even under the action of stirring, it is difficult for oxygen to penetrate the bean skin and enter the interior of the coffee beans, resulting in insufficient oxygen supply inside the coffee beans.

[0007] In addition, during the stirring process, mechanical friction occurs between coffee beans and between coffee beans and the inner wall of the container, causing some bean skins to fall off the surface of the coffee beans. Fermentation differences will form among coffee beans with different degrees of skin shedding. Coffee beans with more shed bean skins have a faster fermentation rate, while coffee beans with intact bean skins have a slower fermentation rate, resulting in uneven overall fermentation. Uneven fermentation will cause flavor differences among coffee beans, affecting the quality consistency of the final product.

[0008] Based on this, under the statement of the above viewpoints, there is still room for improvement in the existing technologies for peeling coffee beans. Summary of the Invention

[0009] In order to solve the above technical problems, this application provides a coffee bean fermentation reaction device and a fermentation method, adopting the following technical solutions:

[0010] In a first aspect, a coffee bean fermentation reaction device includes a sleeve. One end of the sleeve is provided with a discharge funnel, and the end of the sleeve背离 the discharge funnel is provided with a feed funnel. A peeling device is arranged inside the sleeve, and one end of the discharge funnel is provided with a fermenter.

[0011] The fermenter includes a connecting sleeve arranged at one end of the discharge funnel. The lower end of the connecting sleeve is provided with a discharge cylinder, the lower end of the discharge cylinder is provided with a conical funnel, the lower end of the conical funnel is provided with a fermentation tank, the lower end of the connecting sleeve is provided with a discharge cone cylinder located inside the discharge cylinder, and a cavity is formed between the discharge cone cylinder and the discharge cylinder. An air outlet cover communicating with the cavity is jointly arranged at the upper ends of the discharge cylinder and the discharge cone cylinder.

[0012] Preferably, a rotating shaft is jointly rotatably arranged inside the discharge ports of the discharge cylinder and the discharge cone cylinder, and a fan blade located inside the conical funnel is arranged at the lower end of the rotating shaft.

[0013] [[ID=2]]Preferably, the lower end of the rotating shaft rotatably penetrates through the fermentation tank, and spiral blades located inside the fermentation tank are arranged on the rotating shaft.

[0014] Preferably, a plurality of air guide holes communicating with the air inlet are opened on the rotating shaft.

[0015] Preferably, a plurality of stirring plates located inside the discharge cylinder and the discharge cone cylinder are circumferentially arranged on the rotating shaft.

[0016] Preferably, the peeling device includes a rotating cylinder rotatably arranged inside the sleeve. A plurality of guide grooves are circumferentially and evenly distributed on the rotating cylinder. A through hole is opened in the middle of the rotating cylinder, and connecting brackets corresponding to the guide grooves one by one are slidably arranged inside the through hole. The connecting brackets are in a "C" shape, and rotating rollers located inside the guide grooves are rotatably arranged on the connecting brackets. A plurality of spiral grooves are circumferentially arranged inside the sleeve.

[0017] Preferably, the peeling device further includes a blocking cone arranged at one end of the rotating cylinder, and protrusions corresponding to the guide grooves one by one are arranged on the blocking cone.

[0018] Preferably, an airbag located between a plurality of connecting brackets is provided in the through hole, a drive shaft connected to the stop cone is rotatably passed through the sleeve, a connecting hole is provided on the drive shaft, and a catheter communicating with the airbag is provided on the connecting hole.

[0019] Preferably, a piston is slidably provided in the connecting hole, a connecting block is slidably provided in the connecting hole, a return spring is provided between the connecting block and the piston, an adjusting rod is rotatably passed through the drive shaft and threadedly connected to it, and one end of the adjusting rod is rotatably connected to the connecting block.

[0020] In a second aspect, a coffee bean fermentation method is provided, wherein the fermentation method comprises the following steps:

[0021] S1: Peeling preparation. When peeling coffee beans, the coffee beans are fed into the sleeve through the feed funnel. The presence of the spiral groove makes the coffee beans move along a predetermined path in the rotating drum. When the coffee beans touch the roller, the rotation of the roller generates friction with the surface of the coffee beans.

[0022] S2: Uniform peeling; rollers are evenly distributed, each guide groove corresponds to a roller, and multiple rollers work simultaneously. By adjusting the rotation speed of the drum, the peeling intensity is controlled to adapt to different varieties and humidity of coffee beans;

[0023] S3: Pressure adjustment: By rotating the adjustment rod, the adjustment rod drives the connecting block to move in the connecting hole through the threaded connection, thereby changing the elastic force of the return spring, thereby adjusting the elastic force of the airbag and changing the pressing force of the roller on the coffee beans;

[0024] S4: Bean and skin separation. The air outlet hood is connected to the exhaust device, which extracts the air in the cavity outward. External air passes through the conical funnel to replenish the cavity, forming an airflow that enters the cavity from the conical funnel and converges towards the air outlet hood. The coffee beans, due to their large weight, are discharged through the conical funnel, while the coffee skins, being lighter, are carried by the airflow through the cavity and sucked out through the air outlet hood.

[0025] S5: Fermentation process: the coffee beans discharged from the conical funnel enter the fermentation tank, the rotating shaft drives the spiral blades to stir the coffee beans in the fermentation tank, and the air entering the fermentation tank through the air guide holes turns the fermented coffee beans.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. This invention adjusts the elastic force of the return spring to change the water filling and expansion degree of the airbag, thereby affecting the contact force between the roller and the coffee beans. The return spring is compressed, absorbing some of the pressure and providing a buffering effect, preventing the roller from exerting excessive pressure on the coffee beans. The combined design of the airbag and return spring enables the device to adaptively adjust according to the different characteristics of the coffee beans, thereby improving the device's adaptability.

[0028] 2. The air outlet hood of the present invention is connected to an exhaust device, and the air in the cavity is extracted outward through the exhaust device. During this process, external air will pass through the conical funnel to replenish the cavity, forming an airflow that enters the cavity from the conical funnel and converges toward the air outlet hood. The coffee beans are discharged through the conical funnel due to their large weight, while the coffee bean skins are lighter and are carried by the airflow through the cavity and sucked out through the air outlet hood.

[0029] 3. The present invention can precisely control the angle of the sleeve by adjusting the rotation direction and angle of the driving gear, thereby realizing control of the residence time of the coffee beans. When the inclination of the sleeve decreases, the movement speed of the coffee beans in the sleeve slows down and the residence time is prolonged, which is suitable for coffee beans that require longer peeling time or harder coffee beans. When the inclination of the sleeve increases, the movement speed of the coffee beans in the sleeve speeds up and the residence time is reduced, which is suitable for coffee beans that are easy to peel or softer coffee beans. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention.

[0031] Figure 2 It is a schematic diagram of the structure between the sleeve and the fermenter of the present invention.

[0032] Figure 3 It is a cross-sectional view between the sleeve, the discharge funnel and the feed funnel of the present invention.

[0033] Figure 4 It is a cross-sectional view between the sleeve and the peeler of the present invention.

[0034] Figure 5 It is a cross-sectional view of a sleeve of the present invention.

[0035] Figure 6 It is a structural schematic diagram of the peeler of the present invention.

[0036] Figure 7 It is a cross-sectional view of the peeler of the present invention.

[0037] Figure 8 It is a cross-sectional view of the airbag of the present invention.

[0038] Figure 9 It is a schematic structural diagram of the fermenter of the present invention.

[0039] Figure 10 It is a cross-sectional view between the connecting sleeve and the fermenter of the present invention.

[0040] Figure 11 It is a cross-sectional view of the fermenter of the present invention.

[0041] Figure 12 It is a structural schematic diagram of the adjusting member of the present invention.

[0042] Figure 13 It is a cross-sectional view of a fermentation tank of the present invention.

[0043] Figure 14 It is a cross-sectional view between the fermentation tank and the rotating shaft of the present invention.

[0044] Figure 15 This invention Figure 14 Enlarged view of point A in the middle.

[0045] Explanation of Reference Numerals: 1. sleeve; 11. discharge funnel; 12. feed funnel; 2. peeler; 21. rotating drum; 211. guide groove; 212. through hole; 22. connecting bracket; 23. rotating roller; 24. spiral groove; 25. stop cone; 251. protrusion; 252. push plate; 26. flexible scraper; 3. airbag; 31. drive shaft; 32. connecting hole; 33. guide tube; 34. piston; 35. connecting block; 36. return spring; 37. adjusting rod; 4. Fermenter; 41. Discharge cylinder; 42. Conical funnel; 43. Discharge cone; 44. Cavity; 45. Air hood; 46. Rotating shaft; 461. Air inlet 461; 462. Air guide hole 462; 47. Fan blade; 48. Stirring plate; 49. Fermenter 49; 491. Spiral blade; 5. Connecting sleeve; 51. Swivel; 52. Swivel sleeve; 6. Adjusting part; 61. Arc bracket; 62. Sliding groove; 63. Arc rack; 64. Driving gear. DETAILED DESCRIPTION

[0046] The following is combined with Figures 1 to 15 This application is described in further detail.

[0047] The present invention discloses a coffee bean fermentation reaction device and fermentation method. Through innovative structure and precise control, the device achieves efficient coffee bean peeling and uniform fermentation. The device not only improves coffee bean processing efficiency but also ensures coffee bean quality.

[0048] Example 1:

[0049] Reference Figure 1 、 Figure 2 and Figure 3 As shown, a coffee bean fermentation reaction device includes a sleeve 1, a discharge funnel 11 is provided at one end of the sleeve 1, and a feed funnel 12 is provided on the end of the sleeve 1 away from the discharge funnel 11.

[0050] When peeling coffee beans, the coffee beans are fed into the sleeve 1 through the feed hopper 12. When the coffee beans enter the sleeve 1 and contact the peeling device 2 arranged inside the sleeve 1, the rotational movement of the peeling device 2 generates a strong frictional force with the surface of the coffee beans, and this frictional force can effectively strip the outer skin of the coffee beans. The design of the peeling device 2 takes into account the characteristics of the coffee beans and the toughness of the outer skin. By adjusting the rotational speed and the contact area with the coffee beans, it ensures that the outer skin is completely removed while avoiding damage to the coffee beans themselves, thereby effectively removing the outer skin of the coffee beans. The peeled coffee beans will be discharged from the discharge hopper 11, and the peeled coffee beans can enter the collection device or directly enter the subsequent processing steps, such as fermentation, drying, etc.

[0051] Refer to Figure 4 、 Figure 5 and Figure 6 As shown, specifically, the peeling device 2 includes a rotating cylinder 21 rotatably arranged inside the sleeve 1. A plurality of guide grooves 211 are circumferentially and uniformly distributed on the rotating cylinder 21. A through hole 212 is provided in the middle of the rotating cylinder 21. A connecting bracket 22 corresponding to each guide groove 211 is slidably arranged in the through hole 212. The connecting bracket 22 is in an "L" shape. A rotating roller 23 located in the guide groove 211 is rotatably arranged on the connecting bracket 22. A number of helical grooves 24 are circumferentially distributed inside the sleeve 1.

[0052] When peeling coffee beans, the rotating cylinder 21 is driven to rotate by a motor. The rotating rotating cylinder 21 will carry the connecting bracket 22, causing the rotating roller 23 to abut against the inner wall of the rotating cylinder 21 and rotate. The coffee beans entering the rotating cylinder 21 will enter a number of helical grooves 24. The existence of the helical grooves 24 enables the coffee beans to advance along a predetermined path inside the rotating cylinder 21. When the coffee beans contact the rotating roller 23, the rotation of the rotating roller 23 generates friction with the surface of the coffee beans, thereby effectively removing the outer skin of the coffee beans.

[0053] Due to the uniform distribution and rotation characteristics of the rotating rollers 23, the peeling process can maintain a high degree of consistency and efficiency. Each guide groove 211 corresponds to a rotating roller 23, and multiple rotating rollers 23 work simultaneously, ensuring the comprehensiveness and thoroughness of the peeling process. By adjusting the rotational speed of the motor and the rotating speed of the rotating cylinder 21, the peeling intensity can be controlled to adapt to coffee beans of different varieties and humidity. The motor is an existing device that converts electrical energy into mechanical energy.

[0054] The peeled coffee beans will enter the discharge hopper 11. A retaining cone 25 provided at one end of the rotating cylinder 21 will rotate together with the rotating cylinder 21. Protrusions 251 corresponding to each guide groove 211 are provided on the retaining cone 25. The protrusions 251 are aligned with the guide grooves 211 to form a temporary barrier, preventing the coffee beans in the discharge hopper 11 from entering the rotating cylinder 21.

[0055] A flexible scraper 26 is provided on the rotating drum 21. The flexible scraper 26 is arranged at an angle and rotates together with the rotating drum 21. During the rotation process, the flexible scraper 26 uses its inclination angle and elasticity to scrape the accumulated coffee bean skins from the inner wall of the rotating drum 21, effectively preventing the accumulation of coffee bean skins on the inner wall of the rotating drum 21.

[0056] The flexible scraper strips 26 can also exert a certain pressure on the coffee beans through their elastic deformation. This pressure helps the coffee beans to better contact with the peeling device in the rotating drum 21, thereby improving the peeling efficiency.

[0057] The baffle cone 25 is provided with a plurality of circumferentially distributed push plates 252, which are located in the discharge hopper 11. The push plates 252 rotate in the discharge hopper 11 along with the baffle cone 25, and continuously turn over the peeled coffee beans in the discharge hopper 11. The front end of the push plates 252 contacts the coffee beans and generates an outward thrust. At the same time, the continuous rotation of the push plates 252 causes the coffee beans to be continuously turned over in the discharge hopper 11. This turning action prevents the coffee beans from accumulating in the discharge hopper 11 due to gravity or friction.

[0058] Reference Figure 7 and Figure 8 As shown, an air bag 3 is provided in the through hole 212 and is located between a plurality of connecting brackets 22. The air bag 3 pushes the connecting bracket 22 so that the roller 23 is pressed against the inner wall of the sleeve 1. The pressing force ensures that there is sufficient friction between the roller 23 and the coffee beans, thereby effectively removing the outer skin of the coffee beans.

[0059] A drive shaft 31 connected to the stop cone 25 is rotatably provided on the sleeve 1, a connecting hole 32 is opened on the drive shaft 31, a conduit 33 connected to the airbag 3 is provided on the connecting hole 32, a piston 34 is slidably provided in the connecting hole 32, a connecting block 35 is slidably provided in the connecting hole 32, and a return spring 36 is provided between the connecting block 35 and the piston 34.

[0060] By injecting water into the connecting hole 32, the water will flow into the airbag 3 through the conduit 33 along the connecting hole 32, so that the airbag 3 is filled with water. During the rotation of the drum 21, the roller 23 will contact the coffee beans in the spiral groove 24, causing the connecting bracket 22 to move toward the airbag 3 and push the airbag 3 to contract. At this time, the water in the airbag 3 will enter the connecting hole 32 through the conduit 33, pushing the piston 34 to compress the return spring 36. Similarly, the return spring 36 will push the piston 34 to allow the water in the connecting hole 32 to enter the airbag 3 through the conduit 33, causing the airbag 3 to push the connecting bracket 22, so that the roller 23 contacts the coffee beans in the spiral groove 24.

[0061] By rotating the adjustment rod 37 rotatably provided on the drive shaft 31, one end of the adjustment rod 37 is rotatably connected to the connecting block 35. The adjustment rod 37 drives the connecting block 35 to move in the connecting hole 32 through the threaded connection with the drive shaft 31, thereby changing the elastic force of the return spring 36, thereby adjusting the elastic force of the air bag 3, and changing the pressing force of the roller 23 on the coffee beans.

[0062] The elastic force of the return spring 36 determines the degree of water filling and expansion of the airbag 3, which in turn affects the contact force between the roller 23 and the coffee beans. The return spring 36 is compressed, absorbing part of the pressure and providing a buffering effect to prevent the roller 23 from applying excessive pressure on the coffee beans. The combined design of the airbag 3 and the return spring 36 enables the device to be adaptively adjusted according to the different characteristics of the coffee beans, thereby improving the adaptability of the device.

[0063] Reference Figure 9 、 Figure 10 and Figure 11 As shown, a fermenter 4 is provided at one end of the discharge funnel 11, and the fermenter 4 separates the coffee bean skins from the coffee beans through airflow, thereby improving the quality of the coffee beans.

[0064] Specifically, the fermenter 4 includes a connecting sleeve 5 provided at one end of the discharge funnel 11, a discharge barrel 41 is provided at the lower end of the connecting sleeve 5, a conical funnel 42 is provided at the lower end of the discharge barrel 41, and a discharge cone 43 is provided at the lower end of the connecting sleeve 5, which is located inside the discharge barrel 41. A cavity 44 is formed between the discharge cone 43 and the discharge barrel 41, and an air outlet hood 45 connected to the cavity 44 is commonly provided at the upper ends of the discharge barrel 41 and the discharge cone 43.

[0065] The air outlet hood 45 is connected to an exhaust device, which extracts the air in the cavity 44. During this process, external air passes through the conical funnel 42 and is replenished into the cavity 44, forming an airflow that enters the cavity 44 from the conical funnel 42 and converges toward the air outlet hood 45. The exhaust device uses a motor to drive the fan blades to rotate, generating an airflow that extracts the air in the air outlet hood 45.

[0066] The peeled coffee beans discharged from the discharge funnel 11 will pass through the connecting sleeve 5, then fall into the discharge cone 43, and then enter the cavity 44 and be discharged through the conical funnel 42. During this process, the coffee beans, due to their own heavy weight, mainly move downward along the inner walls of the discharge cylinder 41 and the discharge cone 43, and are finally discharged through the conical funnel 42. The coffee bean skins are light in weight and are easily carried by the air flow. Under the action of the air flow, they are guided into the cavity 44. The coffee bean skins carried by the air flow are sucked out through the cavity 44 through the air outlet hood 45 and will not be discharged together with the coffee beans.

[0067] Among them, a rotating shaft 46 is set in the discharge port of the discharge cylinder 41 and the discharge cone cylinder 43 to rotate together, and a fan blade 47 located in the conical funnel 42 is set at the lower end of the rotating shaft 46. A plurality of stirring plates 48 located in the discharge cylinder 41 and the discharge cone cylinder 43 are set circumferentially on the rotating shaft 46.

[0068] When air flows through the conical funnel 42 and enters the cavity 44, the airflow drives the fan blades 47 to rotate the rotating shaft 46. The rotating fan blades 47 drive the stirring plate 48, causing the stirring plate 48 to stir the coffee beans and coffee bean skins in the cavity 44 and the discharge cone 43. The rotation of the stirring plate 48 causes the coffee beans and coffee bean skins in the cavity 44 and the discharge cone 43 to be continuously turned over. This stirring action effectively prevents the accumulation of coffee beans and coffee bean skins, ensuring that they can be continuously moved and separated.

[0069] Example 2:

[0070] Reference Figure 13 、 Figure 14 and Figure 15 As shown, based on the first embodiment, the connecting sleeve 5 includes a swivel 51 provided at one end of the discharge funnel 11 , a swivel sleeve 52 connected to the discharge funnel is rotatably provided on the outer side of the swivel 51 , and the swivel 51 and the swivel sleeve 52 are connected to each other.

[0071] An adjusting member 6 is provided on the discharge barrel 41, and the adjusting member 6 is used to adjust the angle of the sleeve 1, thereby changing the residence time of the coffee beans in the sleeve 1, thereby controlling the peeling time of the coffee beans.

[0072] When the inclination of the sleeve 1 decreases, the movement speed of the coffee beans in the sleeve 1 slows down and the residence time is prolonged. Conversely, when the inclination of the sleeve 1 increases, the movement speed of the coffee beans in the sleeve 1 speeds up and the residence time is reduced.

[0073] Specifically, the adjusting member 6 includes an arc-shaped bracket 61 provided on the discharge barrel 41, the axis of the arc-shaped bracket 61 coincides with the axis of the rotating ring 51 (that is, the rotation center of the sleeve 1), ensuring that the sleeve 1 can smoothly rotate around the rotating ring 51, a sliding groove 62 is provided on the arc-shaped bracket 61, the sleeve 1 is located in the sliding groove 62, an arc-shaped rack 63 is provided on the arc-shaped bracket 61, and a driving gear 64 that engages with the arc-shaped rack 63 is rotatably provided on the sleeve 1.

[0074] By driving the driving gear 64 to rotate, the driving gear 64 drives the sleeve 1 to rotate around the rotating ring 51 through engagement with the arc-shaped rack 63, so that the sleeve 1 moves in the sliding groove 62. The arc-shaped rack 63 engages with the driving gear 64, converting the rotational motion into linear motion, thereby driving the sleeve 1 to move.

[0075] By adjusting the rotation direction and angle of the drive gear 64, the angle of the sleeve 1 can be precisely controlled, thereby achieving control of the residence time of the coffee beans. When the inclination of the sleeve 1 decreases, the movement speed of the coffee beans in the sleeve 1 slows down and the residence time is prolonged, which is suitable for coffee beans that require longer peeling time or harder coffee beans. When the inclination of the sleeve 1 increases, the movement speed of the coffee beans in the sleeve 1 speeds up and the residence time is reduced, which is suitable for coffee beans that are easy to peel or softer coffee beans.

[0076] In addition, a fermentation tank 49 is provided at the lower end of the conical funnel 42. The coffee beans discharged from the conical funnel 42 will enter the fermentation tank 49 for fermentation. At the same time, the lower end of the rotating shaft 46 rotates through the fermentation tank 49. The rotation of the rotating shaft 46 will drive the spiral blade 491 provided thereon and located in the fermentation tank 49. The spiral blade 491 will stir the coffee beans in the fermentation tank 49 to ensure the uniformity and efficiency of the fermentation process.

[0077] An air inlet 461 located in the fermentation tank 49 is provided at the bottom of the rotating shaft 46, and a plurality of air guide holes 462 connected to the air inlet are provided on the rotating shaft 46. When the suction device draws air through the air outlet hood 45, the air will pass through the air inlet 461, then through the air guide holes 462 into the fermentation tank 49, and then enter the cavity 44 through the conical funnel 42 and converge toward the air outlet hood 45 to form an airflow, thereby separating the coffee bean skins.

[0078] At the same time, the air entering the fermentation tank 49 from the air guide holes 462 will stir the fermented coffee beans, ensuring uniform gas exchange in various areas of the fermentation tank and improving the fermentation quality.

[0079] Finally, the present invention also provides a coffee bean fermentation method, which comprises the following steps:

[0080] S1: Preparation for peeling. When peeling the coffee beans, the coffee beans are fed into the sleeve 1 through the feed funnel 12. The coffee beans entering the rotating drum 21 will enter a number of spiral grooves 24. The presence of the spiral grooves 24 allows the coffee beans to move along a predetermined path in the rotating drum 21. When the coffee beans contact the roller 23, the rotation of the roller 23 generates friction with the surface of the coffee beans.

[0081] S2: Uniform peeling; Due to the uniform distribution and self-rotation characteristics of the rollers 23, the peeling process can maintain a high degree of consistency and efficiency. Each guide groove 211 corresponds to a roller 23, and multiple rollers 23 work simultaneously, ensuring the comprehensiveness and thoroughness of the peeling process. By adjusting the speed of the motor and the rotation speed of the drum 21, the peeling intensity can be controlled to adapt to coffee beans of different varieties and humidity.

[0082] S3: Pressure adjustment: By rotating the adjustment rod 37 rotatably provided on the drive shaft 31, one end of the adjustment rod 37 is rotatably connected to the connecting block 35. The adjustment rod 37 drives the connecting block 35 to move in the connecting hole 32 through the threaded connection with the drive shaft 31, thereby changing the elastic force of the return spring 36, thereby adjusting the elastic force of the airbag 3 and changing the pressing force of the roller 23 on the coffee beans.

[0083] S4: Bean skins are separated, and the air outlet hood 45 is connected to the exhaust device, and the air in the cavity 44 is extracted outwards through the exhaust device. During this process, the external air will pass through the conical funnel 42 to replenish the cavity 44, forming an airflow that enters the cavity 44 from the conical funnel 42 and converges to the air outlet hood 45. The peeled coffee beans discharged by the discharge funnel 11 will pass through the connecting sleeve 5, and then fall into the discharge cone 43, and then enter the cavity 44 and be discharged through the conical funnel 42. During this process, due to their own heavy weight, the coffee beans mainly move downward along the inner walls of the discharge cylinder 41 and the discharge cone 43, and are finally discharged through the conical funnel 42. The coffee bean skins are light in weight and are easily carried by the airflow. Under the action of the airflow, they are guided into the cavity 44, and the coffee bean skins carried by the airflow are sucked out through the cavity 44 and the air outlet hood 45.

[0084] S5: Speed ​​adjustment, by driving the driving gear 64 to rotate, the driving gear 64 drives the sleeve 1 to rotate around the rotating ring 51 through engagement with the arc-shaped rack 63, so that the sleeve 1 moves in the sliding groove 62, and the arc-shaped rack 63 engages with the driving gear 64, converting the rotational motion into linear motion, thereby driving the sleeve 1 to move.

[0085] By adjusting the rotation direction and angle of the drive gear 64, the angle of the sleeve 1 can be precisely controlled, thereby achieving control of the residence time of the coffee beans. When the inclination of the sleeve 1 decreases, the movement speed of the coffee beans in the sleeve 1 slows down and the residence time is prolonged. When the inclination of the sleeve 1 increases, the movement speed of the coffee beans in the sleeve 1 speeds up and the residence time is reduced. This is suitable for coffee beans that are easy to peel or softer coffee beans.

[0086] S6: Fermentation process: the coffee beans discharged from the conical funnel 42 will enter the fermentation tank 49 for fermentation. At the same time, the lower end of the rotating shaft 46 rotates through the fermentation tank 49. The rotation of the rotating shaft 46 will drive the spiral blade 491 provided thereon and located in the fermentation tank 49. The spiral blade 491 will stir the coffee beans in the fermentation tank 49 to ensure the uniformity and efficiency of the fermentation process.

[0087] The air entering the fermentation tank 49 from the air guide holes 462 will stir the fermented coffee beans, ensuring uniform gas exchange in various areas of the fermentation tank and improving the fermentation quality.

[0088] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A coffee bean fermentation reaction device, comprising a sleeve (1), a discharge funnel (11) provided at one end of the sleeve (1), and a feed funnel (12) provided at the end of the sleeve (1) away from the discharge funnel (11), characterized in that: A peeler (2) is arranged inside the sleeve (1), and a fermenter (4) is arranged at one end of the discharge funnel (11); The fermenter (4) includes a connecting sleeve (5) arranged at one end of the discharge funnel (11). A discharge cylinder (41) is arranged at the lower end of the connecting sleeve (5). A conical funnel (42) is arranged at the lower end of the discharge cylinder (41). A fermentation tank (49) is arranged at the lower end of the conical funnel (42). A discharge cone cylinder (43) located inside the discharge cylinder (41) is arranged at the lower end of the connecting sleeve (5). A cavity (44) is formed between the discharge cone cylinder (43) and the discharge cylinder (41). An air outlet hood (45) communicating with the cavity (44) is arranged at the upper ends of the discharge cylinder (41) and the discharge cone cylinder (43) together.

2. The coffee bean fermentation reaction equipment according to claim 1, characterized in that: A rotating shaft (46) is rotatably arranged inside the discharge ports of the discharge cylinder (41) and the discharge cone cylinder (43). A fan blade (47) located inside the conical funnel (42) is arranged at the lower end of the rotating shaft (46).

3. The coffee bean fermentation reaction equipment according to claim 2, characterized in that: The lower end of the rotating shaft (46) rotatably penetrates through the fermentation tank (49), and a spiral blade (491) located inside the fermentation tank (49) is arranged on the rotating shaft (46).

4. The coffee bean fermentation reaction equipment according to claim 2, characterized in that: A plurality of air guide holes (462) communicating with the air inlet are formed on the rotating shaft (46).

5. The coffee bean fermentation reaction equipment according to claim 2, characterized in that: A plurality of stirring plates (48) located inside the discharge cylinder (41) and the discharge cone cylinder (43) are arranged circumferentially on the rotating shaft (46).

6. The coffee bean fermentation reaction equipment according to claim 1, characterized in that: The peeler (2) includes a rotating cylinder (21) rotatably arranged inside the sleeve (1). A plurality of guide grooves (211) evenly distributed circumferentially are formed on the rotating cylinder (21). A through hole (212) is formed in the middle of the rotating cylinder (21). Connecting brackets (22) corresponding to the guide grooves (211) one by one are slidably arranged inside the through hole (212). The connecting brackets (22) are in a "C" shape. Rotating rollers (23) located inside the guide grooves (211) are rotatably arranged on the connecting brackets (22). A plurality of spiral grooves (24) distributed circumferentially are formed inside the sleeve (1).

7. The coffee bean fermentation reaction equipment according to claim 6, characterized in that: The peeler (2) further includes a stop cone (25) arranged at one end of the rotating cylinder (21). Protrusions (251) corresponding to the guide grooves (211) one by one are arranged on the stop cone (25).

8. The coffee bean fermentation reaction equipment according to claim 6, characterized in that: An airbag (3) located between a plurality of connecting brackets (22) is arranged inside the through hole (212). A driving shaft (31) rotatably penetrating through the sleeve (1) and connected to the stop cone (25) is provided. A connecting hole (32) is formed on the driving shaft (31). A conduit (33) communicating with the inside of the airbag (3) is arranged on the connecting hole (32).

9. The coffee bean fermentation reaction equipment according to claim 8, characterized in that: A piston (34) is slidably arranged inside the connecting hole (32). A connecting block (35) is slidably arranged inside the connecting hole (32). A return spring (36) is arranged between the connecting block (35) and the piston (34). An adjusting rod (37) threadedly connected to the driving shaft (31) is rotatably penetrated through the driving shaft (31). One end of the adjusting rod (37) is rotatably connected to the connecting block (35).

10. A coffee bean fermentation method, using the coffee bean fermentation reaction equipment according to any one of claims 1 to 9, characterized in that: The fermentation method thereof includes the following steps: S1: Peeling preparation: When peeling coffee beans, the coffee beans are fed into the sleeve (1) through the feed funnel (12). The presence of the spiral groove (24) allows the coffee beans to move along a predetermined path in the rotating drum (21). When the coffee beans contact the roller (23), the rotation of the roller (23) generates friction with the surface of the coffee beans. S2: Uniform peeling; the rollers (23) are evenly distributed, each guide groove (211) corresponds to a roller (23), and multiple rollers (23) work simultaneously. By adjusting the rotation speed of the drum (21), the peeling intensity is controlled to adapt to coffee beans of different varieties and humidity; S3: Pressure adjustment, by rotating the adjustment rod (37), the adjustment rod (37) drives the connecting block (35) to move in the connecting hole (32) through the threaded connection, thereby changing the elastic force of the return spring (36), thereby adjusting the elastic force of the air bag (3), and changing the pressing force of the roller (23) on the coffee beans; S4: Bean skins are separated, and the air outlet hood (45) is connected to the exhaust device. The air in the cavity (44) is extracted outwards by the exhaust device, and the external air passes through the conical funnel (42) to replenish the cavity (44), forming an air flow that enters the cavity (44) from the conical funnel (42) and converges to the air outlet hood (45). The coffee beans are discharged through the conical funnel (42) due to their own heavy weight, while the coffee skins are lighter and are carried by the air flow through the cavity (44) and sucked out through the air outlet hood (45); S5: Fermentation process: the coffee beans discharged from the conical funnel (42) enter the fermentation tank (49), the rotating shaft (46) drives the spiral blades (491) to stir the coffee beans in the fermentation tank (49), and at the same time, the air entering the fermentation tank (49) through the air guide hole (462) turns the fermented coffee beans.

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