A drum-type maceration and fermentation device for coffee bean processing

Abstract

The application discloses a drum type soaking fermentation device for coffee bean processing and relates to the technical field of food processing.The drum type soaking fermentation device comprises a drum machine, and a feeding port is arranged at the top of one side of the drum machine; through arrangement of an auxiliary turnover wall scraping mechanism, a turnover ring turns over materials along with rotation of a spraying head, the original stacking state of coffee beans is broken, coffee beans originally located at the bottom or inside and difficult to contact with soaking liquid are continuously turned over to the upper layer, are fully exposed to the soaking liquid sprayed at multiple angles, and the amount of soaking liquid absorbed by each coffee bean is closer, a more consistent basic condition is provided for subsequent fermentation, the turnover action makes the contact and mixing between coffee beans more sufficient, helps the uniform distribution of microorganisms in the coffee bean population, meanwhile, the sufficient mixing can uniformly transfer heat between the coffee beans, avoids local overheating or overcooling, maintains a stable fermentation environment, and guarantees smooth progress of the fermentation process.

Description

Technical Field

[0001] This invention relates to the field of food processing technology, specifically to a drum-type immersion fermentation device for coffee bean processing. Background Technology

[0002] A drum-type maceration fermentation unit is a device specifically designed for coffee bean fermentation. It simulates the natural fermentation process of coffee beans, utilizing the rotation of the drum and specific environmental conditions to ensure even maceration and fermentation, thereby improving the flavor and quality of the coffee beans. Furthermore, in the coffee bean processing workflow, the maceration fermentation stage plays a crucial role in the final flavor and quality of the coffee beans. Currently, the widely used drum-type maceration fermentation units have revealed a series of key problems that urgently need to be addressed during actual operation.

[0003] The spray system of existing drum-type immersion fermentation equipment has obvious defects. Most of the spray heads are fixed in a specific position, and the spray angle and coverage are very limited. This makes the amount of immersion liquid received by coffee beans in different parts of the drum vary greatly. Some coffee beans may be over-immersed and have deteriorated flavor, while others are under-immersed, which seriously affects the uniformity of immersion. This uneven immersion directly leads to inconsistent fermentation of coffee beans, which ultimately makes it difficult for the finished coffee to maintain a stable and consistent taste and flavor. This makes it impossible to meet consumers' increasingly demanding requirements for high-quality coffee and greatly reduces the market competitiveness of coffee products.

[0004] In addition, during the fermentation process, coffee beans produce a sticky substance. This mucus easily adheres to the inner wall of the drum. Over time, the mucus accumulates, not only interfering with the subsequent fermentation process and hindering the even transfer of heat and gas, but also creating a breeding ground for microorganisms, further threatening the quality of the coffee beans. Traditional equipment lacks an effective inner wall cleaning mechanism. Once the inner wall of the drum needs to be cleaned, operators can only rely on manual operation. This not only consumes a lot of manpower, material resources, and time, significantly increasing production costs, but also makes it difficult to completely remove the stubborn mucus, making it difficult to ensure the cleanliness of the equipment and creating potential quality problems for subsequent fermentation.

[0005] Therefore, this invention proposes a drum-type immersion fermentation device for coffee bean processing to solve the above problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a drum-type immersion fermentation device for coffee bean processing, thereby solving the problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a drum-type immersion fermentation device for coffee bean processing, comprising: a drum machine, wherein a feed inlet is provided at the top of one side of the drum machine, a discharge outlet is provided at the bottom of the side of the drum machine away from the feed inlet, an immersion range guiding mechanism is provided at the top of the inside of the drum machine, and an auxiliary flipping and scraping mechanism is provided below the immersion range guiding mechanism.

[0008] The wetting range guide mechanism is used to adjust the range of the wetting liquid sprayed onto the coffee beans by rotating at multiple angles in both the axial and vertical directions.

[0009] The auxiliary flipping and scraping mechanism is used to simultaneously rotate during multi-angle spraying to flip the sprayed coffee bean material and scrape off the fermentation mucus on the inner wall.

[0010] Preferably, the immersion range guiding mechanism includes an auxiliary cavity, which is fixedly connected to the upper middle part of the drum machine. A T-shaped positioning body is fixedly connected to the top of the auxiliary cavity. A No. 1 motor is fixedly connected to the outer side of the end of the T-shaped positioning body away from the auxiliary cavity. The output axis of the No. 1 motor extends in the direction of the T-shaped positioning body and is fixedly connected to an L-shaped rotating rod. A control ball is rotatably connected to the upper part of the end of the L-shaped rotating rod away from the T-shaped positioning body. The control ball extends downward through the L-shaped rotating rod and is fixedly connected to a spray head.

[0011] Preferably, the immersion range guiding mechanism further includes an arc-shaped groove, which is located on the side of the control ball away from the T-shaped positioning body. A second motor is fixedly connected to the middle side of the T-shaped positioning body. The output axis of the second motor extends downward through the T-shaped positioning body and is fixedly connected to an L-shaped deflector. A slide rod is rotatably connected to the end of the L-shaped deflector away from the second motor. The slide rod is slidably connected in the arc-shaped groove. A connecting pipe is fixedly connected to the control ball.

[0012] Preferably, the auxiliary flipping and scraping mechanism includes a spray cavity, which is opened inside the spray head. A cross bracket is fixedly connected to the top of the spray cavity. A return spring is fixedly connected to the middle of the side of the cross bracket away from the L-shaped rotating rod. A piston plate is fixedly connected to the end of the return spring away from the cross bracket. A flipping ring is fixedly connected to the outer ring of the spray head. Insertion posts are fixedly connected to the middle of the outer ring on both sides of the flipping ring. A sleeve is slidably sleeved on the outer ring of the insertion post away from the flipping ring. An auxiliary spring is fixedly connected between the insertion post and the sleeve. A silicone strip is fixedly connected to the end of the sleeve away from the insertion post.

[0013] Preferably, the inner cavity of the auxiliary cavity is connected to the roller machine, the first motor is electrically connected to an external controller, the connecting pipe is connected to the spray cavity through a control ball, and the spray head is composed of a cylindrical tube and an expansion block.

[0014] Preferably, the second motor is electrically connected to an external controller, and the end of the connecting pipe away from the control ball is connected to an impregnation liquid storage device.

[0015] Preferably, the piston plate is slidably connected inside the spray cavity, the cross bracket, the return spring, and the piston plate are all disposed inside the cylindrical tube of the spray head, and the silicone strip is made of silicone.

[0016] Compared with the prior art, the present invention provides a drum-type immersion fermentation device for coffee bean processing, which has the following beneficial effects:

[0017] 1. Through the setting of the wetting range guiding mechanism, with the forward and reverse settings of motor 1 and motor 2, the spray head is driven to rotate in multiple angles in the horizontal and vertical directions. This breaks through the limitations of the fixed angle of traditional spray heads, and sprays the wetting liquid all-round and without dead angles into all areas inside the drum. This avoids the situation of some coffee beans being over-wetted and others under-wetted, so that each coffee bean can start the fermentation process in a uniform wetting environment. This lays a solid foundation for the consistency of subsequent fermentation, greatly improves the uniformity of coffee bean wetting, reduces the quality difference of coffee beans caused by uneven wetting, reduces the defect rate, improves the utilization rate of raw materials, and reduces raw material costs. Furthermore, the multi-angle rotating spray head can flexibly adjust the spray angle and range according to the characteristics of different batches of coffee beans, such as particle size, density distribution, and different fermentation process requirements, to achieve personalized wetting and enhance the adaptability and flexibility of the equipment to diverse production needs.

[0018] 2. Through the auxiliary flipping and scraping mechanism, the flipping ring flips the material as the spray head rotates, breaking the original piled state of the coffee beans. This allows beans that were previously at the bottom or inside and difficult to contact with the wetting liquid to be continuously flipped to the top, fully exposed to the multi-angle rotating spray of the wetting liquid. Coffee beans that previously received insufficient wetting liquid due to their limited location can now receive ample wetting, further improving the comprehensiveness and uniformity of wetting. This ensures that each coffee bean absorbs a more similar amount of wetting liquid, providing a more consistent foundation for subsequent fermentation. The flipping action also ensures more thorough contact and mixing between the coffee beans, helping microorganisms to distribute evenly within the bean population. Simultaneously, this thorough mixing allows for even heat transfer between the coffee beans, preventing localized overheating or undercooling, maintaining a stable fermentation environment, and ensuring the smooth progress of the fermentation process.

[0019] 3. With the silicone strips in place, as the rotating ring tumbles and moves the material, the silicone strips on both sides can scrape the inner wall of the drum in real time. The viscous liquid produced during fermentation is highly adhesive and will accumulate if not cleaned promptly, affecting the normal operation of the equipment. As the rotating ring rotates, the silicone strips continuously clean the inner wall, scraping off the viscous liquid and preventing it from drying on the surface. This greatly improves the cleaning efficiency of the inner wall, effectively maintaining the cleanliness of the equipment and preventing the viscous liquid from interfering with the subsequent fermentation process. Furthermore, the accumulation of viscous liquid on the inner wall alters the heat conduction and gas flow within the drum. Timely cleaning of the viscous liquid ensures that heat is evenly distributed within the drum, resulting in a consistent fermentation temperature throughout the coffee beans. Simultaneously, it prevents poor gas flow caused by viscous liquid clogging the ventilation channels, maintaining a good fermentation environment, ensuring a smooth fermentation process, and improving the stability of the coffee bean fermentation quality. The auxiliary springs between the insertion column and the sleeve can be flexibly adjusted according to the actual conditions of the inner wall of the drum, ensuring that the silicone strips always adhere to the inner wall for effective scraping.

[0020] 4. Through the coordinated use of the cross bracket, return spring, and piston plate, when the impregnation liquid flows into the spray chamber from the connecting pipe, the water flow pushes the piston plate downward. The shape of the spray head creates a flow channel for the impregnation liquid on both sides, allowing it to flow to the bottom of the spray head. This avoids excessive pressure caused by direct water impact, preventing splashing or backflow at the inlet and ensuring a smooth and even flow of the impregnation liquid into the drum. This ensures the smooth progress of the coffee bean impregnation process, improving the uniformity and effectiveness of the impregnation. Furthermore, the gas pressure generated during fermentation pushes the piston plate upward in the opposite direction, expanding the internal space to accommodate gas and effectively regulating the gas pressure inside the drum. This prevents equipment damage or interference with the fermentation process due to excessive gas pressure, ensuring the stability of the fermentation environment and facilitating the normal operation of the fermentation process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a front view of the overall internal structure of the present invention;

[0023] Figure 3 This is a cross-sectional internal view of the drum machine of the present invention;

[0024] Figure 4 This is a structural diagram of the immersion range guiding mechanism and the auxiliary flipping and scraping mechanism of the present invention;

[0025] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0026] Figure 6This is a structural diagram of the local wetting range guiding mechanism of the present invention;

[0027] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B;

[0028] Figure 8 This is a structural diagram of the partial auxiliary flipping and scraping mechanism of the present invention.

[0029] In the picture:

[0030] 1. Drum roller; 11. Feed inlet; 12. Discharge outlet;

[0031] 2. Immersion range guiding mechanism; 21. Auxiliary cavity; 22. T-shaped positioning body; 23. Motor No. 1; 24. L-shaped rotating rod; 25. Control ball; 26. Spray head; 27. Arc-shaped groove; 28. Motor No. 2; 29. ​​L-shaped deflector; 210. Slide rod; 211. Connecting pipe;

[0032] 3. Auxiliary tilting and scraping mechanism; 31. Spray chamber; 32. Cross bracket; 33. Return spring; 34. Piston plate; 35. Tilting ring; 36. Insertion post; 37. Sleeve; 38. Auxiliary spring; 39. Silicone strip. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0035] Please refer to Figures 1 to 5 As shown:

[0036] To address the problems mentioned in the technical solutions, this application provides a drum-type immersion fermentation device for coffee bean processing, comprising: a drum machine 1, a feed inlet 11 provided at the top of one side of the drum machine 1, a discharge outlet 12 provided at the bottom of the side of the drum machine 1 away from the feed inlet 11, an immersion range guiding mechanism 2 provided at the top inside the drum machine 1, and an auxiliary flipping and scraping mechanism 3 provided below the immersion range guiding mechanism 2.

[0037] The wetting range guide mechanism 2 is used to adjust the range of the wetting liquid sprayed onto the coffee beans by rotating at multiple angles in the axial and vertical directions. The wetting range guide mechanism 2 includes an auxiliary cavity 21, which is fixedly connected to the upper middle part of the drum machine 1. The inner cavity of the auxiliary cavity 21 is connected to the drum machine 1. A T-shaped positioning body 22 is fixedly connected to the top of the auxiliary cavity 21. A No. 1 motor 23 is fixedly connected to the outer side of the end of the T-shaped positioning body 22 away from the auxiliary cavity 21. The No. 1 motor 23 is mainly used to drive the L-shaped rotating rod 24 to rotate laterally. The No. 1 motor 23 is electrically connected to... An external controller is provided. The output axis of motor 23 extends in the direction of T-shaped positioning body 22 and is fixedly connected to L-shaped rotating rod 24. The upper part of the L-shaped rotating rod 24 away from T-shaped positioning body 22 is rotatably connected to control ball 25. Connecting pipe 211 is connected to spray cavity 31 through control ball 25. Control ball 25 extends downward through L-shaped rotating rod 24 and is fixedly connected to spray head 26. Spray head 26 is mainly used to spray wetting liquid onto coffee bean material in drum machine 1 through connecting pipe 211. Spray head 26 is composed of cylindrical tube and expansion block.

[0038] The immersion range guiding mechanism 2 also includes an arc-shaped groove 27, which is located on the side of the control ball 25 away from the T-shaped positioning body 22. A second motor 28 is fixedly connected to the middle side of the T-shaped positioning body 22. The second motor 28 is mainly used to drive the L-shaped deflector 29 to rotate vertically. The second motor 28 is electrically connected to an external controller. The output shaft of the second motor 28 extends downward through the T-shaped positioning body 22 and is fixedly connected to the L-shaped deflector 29. A slide rod 210 is rotatably connected to the end of the L-shaped deflector 29 away from the second motor 28. The slide rod 210 is slidably connected in the arc-shaped groove 27. A connecting pipe 211 is fixedly connected to the control ball 25. An immersion liquid storage device is connected to the end of the connecting pipe 211 away from the control ball 25.

[0039] A further embodiment: Please refer to Figures 6 to 8 As shown:

[0040] The auxiliary flipping and scraping mechanism 3 is used to synchronously rotate and flip the sprayed coffee bean material and scrape off the fermentation mucus on the inner wall during multi-angle spraying. The auxiliary flipping and scraping mechanism 3 includes a spraying inner cavity 31, which is located inside the spray head 26. A cross bracket 32 ​​is fixedly connected to the top of the spraying inner cavity 31. The cross bracket 32 ​​is mainly used to assist the sliding of the piston plate 34 with the universal return spring 33. A return spring 33 is fixedly connected to the middle of the side of the cross bracket 32 ​​away from the L-shaped rotating rod 24. A piston plate 34 is fixedly connected to the end of the return spring 33 away from the cross bracket 32. The plate 34 is slidably connected inside the spray cavity 31. The cross bracket 32, the return spring 33, and the piston plate 34 are all set inside the cylindrical tube of the spray head 26. The outer ring of the spray head 26 is fixedly connected to a flip ring 35. The outer ring of the middle part of both sides of the flip ring 35 is fixedly connected to a plug post 36. The outer ring of the plug post 36 away from the flip ring 35 is slidably sleeved with a sleeve 37. An auxiliary spring 38 is fixedly connected between the plug post 36 and the sleeve 37. The end of the sleeve 37 away from the plug post 36 is fixedly connected to a silicone strip 39. The silicone strip 39 is mainly used to scrape the inner wall of the drum machine 1. The silicone strip 39 is made of silicone.

[0041] The working principle of all the content in the above embodiments is as follows:

[0042] In the initial state: Motor 1 23 and Motor 2 28 are not started, the return spring 33 is not squeezed or stretched, the piston plate 34 is in the cylindrical tube of the spray head 26, the drum machine 1 contains unwetted coffee bean material, and the spray head 26 does not spray wetting liquid.

[0043] The following describes the working process of the wetting range guide mechanism 2, which adjusts the range of the wetting liquid sprayed onto the coffee beans by rotating at multiple angles in both the axial and vertical directions:

[0044] In operation, motor 23 is powered on under the control of an external controller. The output shaft of motor 23 rotates, which in turn drives the L-shaped rotating rod 24, fixedly connected to the output shaft of motor 23, to rotate 180 degrees forward and then 180 degrees backward in a horizontal position. As one end of the L-shaped rotating rod 24 swings with motor 23, it is simultaneously oscillating with the control ball 25, which is rotatably connected to the control ball 25. This oscillates the control ball 25 and the spray head 26 around the axis of the L-shaped rotating rod 24. Furthermore, while motor 23 starts rotating in both directions, motor 28 starts simultaneously, driving the L-shaped deflector 29 to rotate in both directions vertically. Since the end of the L-shaped deflector 29 furthest from motor 28 rotates... A sliding rod 210 is connected and slidably connected within the arc-shaped groove 27 on the outer ring of the control ball 25. Therefore, when the L-shaped deflector 29 rotates forward and backward in the vertical position, the sliding rod 210, under the constraint of the swing of the L-shaped deflector 29 and the arc-shaped groove 27 and the sliding rod 210, drives the control ball 25 to rotate forward and backward in the vertical position through the sliding rod 210. This rotation is then transmitted to the spray head 26 through the control ball 25, thereby driving the spray head 26 to rotate forward and backward in the vertical and horizontal directions. At this time, the connecting pipe 211 introduces the wetting liquid into the spray head 26 through the control ball 25 for spraying. During the spraying of the wetting liquid by the spray head 26, with the multi-directional rotation, the wetting liquid is better sprayed onto the coffee bean material for uniform wetting.

[0045] By using the wetting range guiding mechanism 2, and with the forward and reverse settings of motor 23 and motor 28, the spray head 26 rotates at multiple angles in both the horizontal and vertical directions. This breaks through the limitations of traditional fixed-angle spray heads, ensuring that the wetting liquid is sprayed evenly and without dead angles throughout the drum. This avoids over-wetting of some coffee beans and under-wetting of others, allowing each coffee bean to start the fermentation process in a uniform wetting environment. This lays a solid foundation for the consistency of subsequent fermentation, greatly improving the uniformity of coffee bean wetting, reducing the quality differences caused by uneven wetting, lowering the defect rate, increasing the utilization rate of raw materials, and reducing raw material costs. Furthermore, the multi-angle rotating spray head 26 can flexibly adjust the spray angle and range according to the characteristics of different batches of coffee beans, such as particle size, density distribution, and different fermentation process requirements, to achieve personalized wetting and enhance the adaptability and flexibility of the equipment to diverse production needs.

[0046] Please refer to the above work process. Figures 1 to 5 .

[0047] The following describes the working process of the auxiliary flipping and scraping mechanism 3, which rotates synchronously during multi-angle spraying to flip the sprayed coffee bean material and scrape off the fermentation mucus on the inner wall:

[0048] During use, with the action of the wetting range guiding mechanism 2, the control ball 25 is driven by motors 23 and 28 to rotate at multiple angles, which in turn transmits to the spray head 26 to rotate in multiple directions. Since the rotating ring 35 is fixedly connected to the outer ring of the spray head 26, as the spray head 26 rotates vertically and laterally with the control ball 25, the rotating ring 35 deflects synchronously due to the rotation of the spray head 26. Thus, when the spray head 26 sprays the wetting liquid, the rotating ring 35 stirs and turns the internal coffee bean material in multiple directions, preventing the coffee bean material from accumulating and causing uneven wetting. In one step, when the rotating ring 35 rotates with the spray head 26 to rotate the material, silicone strips 39 are connected to both sides of the rotating ring 35 through the cooperation of the plug-in post 36, sleeve 37, and auxiliary spring 38. Under the rotation of the rotating ring 35, the silicone strips 39 rotate synchronously with the rotating ring 35. During this rotation, since the silicone strips 39 are in contact with the inner wall of the drum machine 1, they scrape the inner wall during the deflection process. Under the elastic action of the auxiliary spring 38 between the plug-in post 36 and the sleeve 37, there is a certain shrinkage space, which avoids the silicone strips 39 from damaging the inner wall of the drum machine 1 during the scraping process.

[0049] Furthermore, when the wetting liquid in the connecting pipe 211 flows into the spray head 26, the impact of the liquid pushes the piston plate 34 in the spray head 26 to slide downward, and then the return spring 33 is stretched. The piston plate 34 is at the lower end of the spray head 26, and the liquid flows through the edge of the piston plate 34 to the lower end of the spray head 26, and then sprays into the drum machine 1. During the wetting and fermentation of coffee bean material in the drum machine 1, gas is produced during fermentation, which increases the gas pressure in the drum machine 1. Therefore, when the gas pressure in the drum machine 1 increases, the gas pressure pushes the piston plate 34 against it, and then pushes the piston plate 34 to move upward. The return spring 33 is compressed, thereby reducing the space between the piston plate 34 and the cross support 32, accommodating the gas produced during fermentation, and avoiding damage to the drum machine 1 due to excessively high gas pressure on the inner wall.

[0050] With the auxiliary flipping and scraping mechanism 3, the flipping ring 35 flips the material as the spray head 26 rotates, breaking the original piled state of the coffee beans. This allows coffee beans that were originally at the bottom or inside and difficult to contact with the wetting liquid to be continuously flipped to the top, fully exposed to the wetting liquid sprayed from multiple angles. Coffee beans that were originally unable to receive enough wetting liquid due to their limited position can now be fully soaked, further improving the comprehensiveness and uniformity of wetting. This ensures that each coffee bean absorbs a more similar amount of wetting liquid, providing a more consistent foundation for subsequent fermentation. The flipping action also makes the contact and mixing between coffee beans more thorough, helping microorganisms to be evenly distributed in the coffee bean population. At the same time, this thorough mixing allows heat to be evenly transferred between coffee beans, avoiding local overheating or undercooling, maintaining a stable fermentation environment, and ensuring the smooth progress of the fermentation process.

[0051] With the silicone strips 39 in place, as the rotating ring 35 rotates and drives the material to tumble, the silicone strips 39 on both sides can scrape the inner wall of the drum 1 in real time. The viscous liquid produced during fermentation is highly adhesive and will accumulate if not cleaned in time, affecting the normal operation of the equipment. As the silicone strips 39 rotate with the rotating ring 35, they can continuously clean the inner wall, scraping off the viscous liquid and preventing it from drying on the wall surface. This greatly improves the cleaning efficiency of the inner wall, effectively maintains the cleanliness of the equipment, and avoids the viscous liquid interfering with the subsequent fermentation process. Moreover, the accumulation of viscous liquid on the inner wall will change the heat conduction and gas circulation inside the drum 1. Timely cleaning of the viscous liquid can ensure that the heat is evenly transferred in the drum, making the fermentation temperature of all parts of the coffee beans consistent. At the same time, it prevents the gas circulation from being obstructed due to the viscous liquid blocking the ventilation channels, maintains a good fermentation environment, ensures the smooth progress of the fermentation process, and improves the stability of the coffee bean fermentation quality. The auxiliary springs 38 between the plug-in column 36 and the sleeve 37 can be flexibly adjusted according to the actual situation of the inner wall of the drum 1, so that the silicone strips 39 always adhere to the inner wall and effectively perform the scraping work.

[0052] Through the coordinated use of the cross bracket 32, the return spring 33, and the piston plate 34, when the wetting liquid flows from the connecting pipe 211 into the spray cavity 31, the piston plate 34 is pushed downward by the water flow. Under the shape of the spray head 26, the space on both sides provides a flow channel for the wetting liquid. The wetting liquid flows through the space on both sides of the piston plate 34 to the bottom spray point of the spray head 26, avoiding excessive pressure caused by direct water flow impact, preventing the wetting liquid from splashing or backflowing at the inlet, and ensuring that the wetting liquid can flow smoothly and evenly into the drum machine 1. This ensures the smooth progress of the coffee bean wetting process and helps to improve the uniformity and effect of wetting. Furthermore, the gas pressure generated by fermentation pushes the piston plate 34 upward in the opposite direction, expanding the internal space to accommodate gas, effectively regulating the gas pressure in the drum, preventing equipment damage or interference with the fermentation process due to excessive gas pressure, ensuring the stability of the fermentation environment, and facilitating the normal progress of the fermentation process.

[0053] Please refer to the above work process. Figures 6 to 8 .

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drum-type immersion fermentation apparatus for coffee bean processing, comprising: A drum mill (1) has a feed inlet (11) at the top of one side and a discharge outlet (12) at the bottom of the side away from the feed inlet (11). The drum mill (1) is characterized by having a wetting range guiding mechanism (2) at the top inside, and an auxiliary flipping and scraping mechanism (3) below the wetting range guiding mechanism (2). The wetting range guiding mechanism (2) is used to adjust the range of the wetting liquid sprayed onto the coffee beans by multi-angle rotation in the axial and vertical directions. The auxiliary flipping and scraping mechanism (3) is used to simultaneously rotate and flip the sprayed coffee bean material during multi-angle spraying and to scrape off the fermentation mucus from the inner wall. The wetting range guiding mechanism (2) includes an auxiliary cavity (2... 1) The auxiliary cavity (21) is fixedly connected to the upper middle part of the drum machine (1). A T-shaped positioning body (22) is fixedly connected to the top of the auxiliary cavity (21). A No. 1 motor (23) is fixedly connected to the outer side of the end of the T-shaped positioning body (22) away from the auxiliary cavity (21). The output axis of the No. 1 motor (23) extends in the direction of the T-shaped positioning body (22) and is fixedly connected to an L-shaped rotating rod (24). A control ball (25) is rotatably connected to the upper part of the end of the L-shaped rotating rod (24) away from the T-shaped positioning body (22). The control ball (25) extends downward through the L-shaped rotating rod (24) and is fixedly connected to a spray head (26). The auxiliary flipping and scraping mechanism (3) includes a spray inner cavity (31). The spray cavity (31) is opened inside the spray head (26). A cross bracket (32) is fixedly connected to the top of the spray cavity (31). A return spring (33) is fixedly connected to the middle of the side of the cross bracket (32) away from the L-shaped rotating rod (24). A piston plate (34) is fixedly connected to the end of the return spring (33) away from the cross bracket (32). A flip ring (35) is fixedly connected to the outer ring of the spray head (26). Insertion posts (36) are fixedly connected to the middle of the outer rings on both sides of the flip ring (35). A sleeve (37) is slidably sleeved on the outer ring of the insertion post (36) away from the flip ring (35). An auxiliary spring (38) is fixedly connected between the insertion post (36) and the sleeve (37). 37) A silicone strip (39) is fixedly connected to one end away from the plug post (36). The immersion range guide mechanism (2) also includes an arc groove (27). The arc groove (27) is opened on the side of the control ball (25) away from the T-shaped positioning body (22). A second motor (28) is fixedly connected to one side of the middle part of the T-shaped positioning body (22). The output shaft of the second motor (28) extends downward through the T-shaped positioning body (22) and is fixedly connected to an L-shaped deflector (29). A slide rod (210) is rotatably connected to one end of the L-shaped deflector (29) away from the second motor (28). The slide rod (210) is slidably connected in the arc groove (27). A connecting pipe (211) is fixedly connected to the control ball (25).

2. The drum-type immersion fermentation device for coffee bean processing according to claim 1, characterized in that: The inner cavity of the auxiliary cavity (21) is connected to the roller machine (1), the first motor (23) is electrically connected to an external controller, the connecting pipe (211) is connected to the spray inner cavity (31) through the control ball (25), and the spray head (26) is composed of a cylindrical tube and an expansion block.

3. The drum-type immersion fermentation device for coffee bean processing according to claim 1, characterized in that: The second motor (28) is electrically connected to an external controller, and the end of the connecting pipe (211) away from the control ball (25) is connected to an impregnation liquid storage device.

4. A drum-type immersion fermentation device for coffee bean processing according to claim 1, characterized in that: The piston plate (34) is slidably connected in the spray cavity (31). The cross bracket (32), the reset spring (33), and the piston plate (34) are all located in the cylindrical tube of the spray head (26). The silicone strip (39) is made of silicone.

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