A biomimetic fermentation device and method for plant fiber treatment

Abstract

The application discloses a kind of biomimetic fermentation devices and methods for plant fiber processing, it is related to biomass energy and environmental engineering technical field.The device includes successively connected biomimetic rumen assembly, biomimetic reticulum assembly, biomimetic omental sac assembly and biomimetic abomasus assembly.The biomimetic rumen assembly simulates rumen peristalsis to carry out physical crushing and anaerobic fermentation on material.The biomimetic reticulum assembly realizes solid-liquid separation, fermentation liquid reflux and chemical cleaning.The biomimetic omental sac assembly carries out efficient dehydration and drying on material.The biomimetic abomasus assembly carries out classification screening on dried product.The application also provides corresponding biomimetic fermentation method.The application highly integrates units such as physical, chemical, biological treatment and product separation by simulating the digestion process of ruminant, realizes continuous automation processing, significantly improves processing efficiency and product quality stability;At the same time, process parameters are controllable, wide applicability, and internal resources can be recycled, effectively reduces operating cost and environmental load.

Description

Technical Field

[0001] This invention relates to the field of biomass energy and environmental engineering technology, specifically to a biomimetic fermentation device and method for processing plant fibers. Background Technology

[0002] Plant fiber, as the most abundant renewable biomass resource in nature, presents a core challenge in the field of bioengineering regarding its efficient degradation and resource utilization. Currently, the biological treatment of plant fiber mainly relies on various anaerobic fermentation devices. However, when processing high-solids-content, long-fiber materials, existing technologies and equipment still have significant limitations in terms of structural design, system integration, and process control precision.

[0003] In terms of the core fermentation stirring structure, existing technologies mostly employ rigid mechanical stirring or pneumatic stirring. For example, patent CN104893957B discloses a continuous fermentation device that uses multi-layered propeller blades for stirring; patents CN202265565U and CN206599573U also use similar motor-driven rigid propeller structures. When processing long-fiber materials such as corn stalks, these devices are prone to fiber entanglement on the propeller blades, leading to motor overload or even equipment shutdown; moreover, the strong shear force generated by rigid stirring can destroy microbial flocs, affecting fermentation efficiency. Although patent CN101565673B proposes pneumatic stirring to reduce shear force, air bubbles in high-concentration fibrous liquids with non-Newtonian fluid properties easily form "cavitation," resulting in low mass transfer efficiency and failing to simulate the powerful physical peristalsis and cell-wall breaking function of the rumen wall in ruminants.

[0004] Regarding the completeness and functional integration of biomimetic systems, existing technologies are mostly limited to simulating the physicochemical environment of the rumen, a single organ, and lack a systematic reproduction of the entire digestive mechanism of rumen-reticulum-omasum-abomasum in ruminants. For example, although patent CN102286359B achieves solid-liquid-gas three-phase separation, it is essentially still a single-tank reactor and lacks subsequent refined processing units; patent CN114873724B attempts to introduce 3D-printed biomimetic components to increase microbial attachment, but its main structure is still a static or simple fluidized bed, which cannot achieve the physical morphology control of materials at different digestion stages (such as dehydration and grading). Although the recently emerged patents CN117736840B and CN117720994B innovatively use soft robot drive to achieve flexible peristalsis, their technical concepts mainly focus on laboratory-level feed digestibility "detection and analysis" and do not involve the process links such as chemical cleaning, multi-stage dehydration and drying and product grading and screening required for industrial processing. Therefore, they cannot meet the continuous and large-scale requirements of plant fiber resource production.

[0005] More importantly, existing fermentation processes generally suffer from "black box" and uncontrollability issues. Whether it's the general-purpose fermentation devices mentioned above or fragmented biomimetic fermentation technologies, their process control is relatively crude, typically aiming solely at maximizing degradation (e.g., maximizing biogas production, see patent CN108641936B, etc.). The entire process is like a difficult-to-monitor "black box," unable to qualitatively or quantitatively control the degree of fiber degradation. However, in industrial applications such as pulp and paper making or textiles, complete degradation of plant fibers is not necessary; often, only the targeted removal of "impurities" such as lignin and hemicellulose is required, while preserving the fiber morphology and strength of cellulose to the maximum extent. Existing technologies clearly cannot meet the demand for this refined processing of plant fibers, including targeted impurity removal, partial degradation, or specific modification, severely limiting their application scenarios.

[0006] In view of the shortcomings of the existing patents in terms of mechanical structure adaptability, system functional integrity and process control precision, the present invention proposes a biomimetic fermentation device and method for plant fiber processing. By constructing a whole-process biomimetic digestion chain, the efficient, continuous and directional conversion of plant fibers is achieved. Summary of the Invention

[0007] The purpose of this invention is to provide a biomimetic fermentation device and method for plant fiber treatment, which solves the problems in existing plant fiber treatment technologies, such as the easy entanglement of the stirring structure and low mass transfer efficiency, poor functional integration of the biomimetic system, and the "black box" nature of the fermentation process, which makes it difficult to achieve precise control over the degree of fiber degradation (such as directional impurity removal, partial degradation, or complete degradation).

[0008] This invention discloses a biomimetic fermentation device for plant fiber treatment, comprising:

[0009] A biomimetic rumen assembly is used for the physical crushing and anaerobic fermentation of plant fiber raw materials to produce a solid-liquid mixture.

[0010] The bionic reticulated rumen assembly is used to separate solid-liquid mixtures into solid and liquid phases. The liquid phase is transported to the bionic rumen assembly, and the solid phase is chemically cleaned to obtain secondary products.

[0011] A biomimetic omasum assembly is used to dehydrate and dry secondary products to obtain tertiary products.

[0012] And a biomimetic abomasum assembly, used for grading and screening the particle size of tertiary products;

[0013] The bionic rumen assembly, bionic reticulum assembly, bionic omasum assembly, and bionic abomasum assembly are connected in series via connecting pipes and transmission mechanisms to form a continuous and closed material handling flow path. Each connecting pipe and transmission mechanism is unidirectional.

[0014] Preferably, the bionic rumen assembly includes a flexible rumen body and a drive mechanism disposed on the outside of the flexible rumen body;

[0015] The flexible rumen body is made of a highly elastic flexible material;

[0016] The drive mechanism includes a rotating chassis and a rotating robotic arm. At least one rotating robotic arm is provided. The rotating robotic arm and the flexible rumen body are fixedly mounted on the rotating chassis. The rotating robotic arm extends longitudinally. The flexible rumen body is located at the center of several rotating robotic arms. The rotating robotic arm and the flexible rumen body are press-fitted and in compression contact. A pipe communicating with the bionic reticulum assembly is provided at the center of the rotating chassis.

[0017] Preferably, the top of the flexible rumen body is provided with a fiber inlet, a cutting mechanism, and a biomimetic rumen fluid inlet mechanism;

[0018] The bionic rumen liquid inlet mechanism is provided with four interfaces and one main inlet. The four interfaces are as follows: the first interface is connected to the outlet of the cutting mechanism, the second interface is connected to the liquid phase reflux port of the bionic reticulum assembly, the third interface is the liquid inlet, and the fourth interface is connected to the exhaust port.

[0019] The exhaust port is directly connected to the interior of the flexible rumen body of the bionic rumen assembly via a pipe; the exhaust port is connected to a one-way exhaust valve or a water seal assembly.

[0020] The biomimetic rumen inlet mechanism is configured such that solid plant fiber raw material input from the cutting mechanism, liquid material returning from the biomimetic reticulum assembly, and fresh fermentation liquid or buffer solution injected from the inlet are combined within the structure of the biomimetic rumen inlet mechanism and injected into the biomimetic rumen assembly; fermentation gas generated within the biomimetic rumen assembly is discharged through the exhaust port under positive pressure.

[0021] Preferably, the rotary robotic arm includes a boom and rollers mounted on the boom via bearings. At least one roller is provided. The rotary chassis drives the rotary robotic arm to revolve around the central axis of the flexible rumen body. The rollers are interference-fitted with the inner wall of the flexible rumen body, and the two form a vertical line contact or surface contact compression zone.

[0022] Preferably, the bionic reticulated stomach assembly includes a bionic reticulated stomach body, a bionic reticulated stomach upper cover, a liquid tank pump, and several fluid delivery components;

[0023] The upper end cap of the bionic reticulated stomach is set on the main body of the bionic reticulated stomach and is sealed to the inner cavity of the main body of the bionic reticulated stomach. The upper end cap of the bionic reticulated stomach is connected to a hollow secondary telescopic rod to perform reciprocating piston-like compression in the inner cavity of the main body of the bionic reticulated stomach. The other end of the secondary telescopic rod is connected to a bionic reticulated stomach liquid inlet mechanism, which is connected to the bionic rumen assembly through a solid-liquid mixing pipe.

[0024] Both the bionic mesh stomach liquid inlet mechanism and the main body of the bionic mesh stomach are connected to the liquid tank pump through a fluid delivery component;

[0025] The bottom of the bionic omasum body is equipped with a fiber passage channel. The inlet of the channel is equipped with an openable and closable sealing valve (such as a solenoid valve or a pneumatic slide valve). It remains closed during the liquid separation stage and opens during the discharge stage to transport the generated secondary products to the bionic omasum assembly. The fiber passage channel is not connected to the liquid tank pump.

[0026] The lower surface of the bionic mesh stomach cap is equipped with an elastic sweeping structure.

[0027] Preferably, the fluid delivery assembly includes:

[0028] Cleaning fluid injection pipe used to connect the bionic mesh stomach liquid inlet mechanism with the liquid tank pump;

[0029] Fermentation broth / cleaning broth drain pipe used to connect the bionic reticulated stomach body to the liquid tank pump;

[0030] And a fermentation broth reflux pipe for connecting the liquid tank pump and the biomimetic rumen assembly.

[0031] Preferably, the biomimetic omasum assembly is provided with a multi-stage folded drying component, including at least two stages of conveyor belts arranged in an alternating material flow direction and guide baffles disposed between adjacent conveyor belts, the conveyor belts and guide baffles causing the material transport path to be Z-shaped or serpentine.

[0032] Preferably, the biomimetic abomasum assembly includes a vibrating screening unit and a vibration drive mechanism disposed below the vibrating screening unit;

[0033] The vibrating screening unit includes at least two layers of screens stacked together, with the screen aperture decreasing sequentially along the material flow direction;

[0034] The vibration drive mechanism includes an electric swing shaft and a vibrating pendulum, which are used to drive the screen to generate high-frequency vibration.

[0035] The present invention also provides a biomimetic fermentation method for plant fiber treatment, based on the above-mentioned biomimetic fermentation device for plant fiber treatment, comprising the following steps:

[0036] S1. Bionic rumen processing: Within the bionic rumen assembly, the flexible wall is driven by a drive mechanism to generate periodic deformation and peristalsis, which physically crushes and anaerobic ferments the plant fiber raw material to produce a solid-liquid mixture.

[0037] S2, Bionic reticulum separation and circulation: The solid-liquid mixture is transported to the bionic reticulum assembly and the time-sharing control logic is executed: First, the fermentation liquid is squeezed out and returned to the bionic rumen assembly. Then, the remaining solid material is injected with chemical cleaning liquid for cleaning and squeezed out again to discharge the waste liquid, thereby obtaining the secondary product.

[0038] S3, Bionic omasum drying: The secondary product is transported to the bionic omasum assembly, transferred and dehydrated on the multi-stage folded drying component to obtain the tertiary product;

[0039] S4. Bionic abomasum grading: The tertiary products are transported to the bionic abomasum assembly, and target products of different particle sizes are obtained by vibration sieving.

[0040] Preferably, in step S2, the type of chemical cleaning solution in the bionic rumen assembly is selectively adjusted to be alkaline solution, alcohol solution or distilled water according to the target product requirements, and the fermentation time of the bionic rumen assembly is adjusted.

[0041] The time-sharing control logic for the fluid delivery component is as follows:

[0042] In the first extrusion stage, the cleaning fluid injection pipe is closed, and the fermentation broth return pipe and the fermentation broth / cleaning fluid drain pipe are connected to return the extruded fermentation broth rich in bacteria to the biomimetic rumen assembly.

[0043] During the chemical cleaning stage, shut off the fermentation broth / cleaning solution drain pipe; control the opening of the cleaning solution injection pipe to inject chemical cleaning solution into the remaining solid material;

[0044] In the second squeezing stage, the cleaning liquid injection pipe and the fermentation liquid return pipe are closed, and the fermentation liquid / cleaning liquid drain pipe is controlled to open, or the fermentation liquid / cleaning liquid drain pipe is controlled to open in reverse, so that the waste liquid after cleaning is discharged from the device.

[0045] Therefore, the present invention employs the above-described biomimetic fermentation device and method for plant fiber treatment, which has the following beneficial effects:

[0046] 1. This invention, through the aforementioned device and method, achieves highly efficient degradation of plant fibers, far exceeding the efficiency of general-purpose fermentation devices. Based on the concept of learning from nature, its multi-chamber structure creates independent and optimized "niches" for different functional microbial communities (hydrolytic bacteria, acid-producing bacteria, fungi, etc.). Compared to the "one-pot" mode of traditional general-purpose fermentation devices, the rumen-like chamber of this invention can maintain a slightly acidic environment most suitable for the survival of hydrolytic acid-producing bacteria, while subsequent chambers can be adjusted to meet the needs of other microbial communities, achieving regional co-prosperity and efficient synergy of functional microbial communities. This design breaks through the efficiency bottleneck caused by the single environmental conditions in traditional devices, enabling three-dimensional and relay-style degradation of the lignocellulose structure. Therefore, when processing the same mass of plant fibers, this invention has a faster degradation rate, a shorter fermentation cycle, and a higher product conversion rate, demonstrating a professional processing capability far superior to other general-purpose fermentation devices.

[0047] 2. This invention represents a leap from single-function imitation to full-process biomimicry, achieving high system integration and stable, reliable operation. This invention does not simply mimic a single function of the rumen, but creatively constructs a full-process biomimicry system simulating the complete digestive chain of "rumen-reticulum-omasum-abomasum." Each "stomach assembly" of the device not only performs its specific biochemical function (such as primary hydrolysis, solid-liquid separation, and deep degradation), but also simulates physical processes such as rumination and peristalsis through internal material circulation, transfer, and control systems. This highly integrated process overcomes the fragmented imitation and disjointed processes of existing technologies, making the entire processing smoother, more compact, and more efficient. Simultaneously, the stable micro-ecosystem formed within the system possesses strong environmental buffering capacity and resistance to shock loads, ensuring long-term stable and reliable operation.

[0048] 3. It enables targeted control of the fermentation degree of plant fibers, expanding the application fields of fermentation products and making the fermentation process controllable and directional. Because each "stomach assembly" has a clearly defined function and can be independently adjusted, users can flexibly "program" the fermentation process according to the needs of the final product. For example:

[0049] Targeted impurity removal: If the goal is to produce high-quality cellulose (such as for papermaking or textiles), the material can be allowed to pass only through the "rumen-like chamber" and the "valvular chamber" to mainly remove lignin and hemicellulose. The treated cellulose is then pre-extracted to avoid excessive degradation.

[0050] Partial degradation and modification: If the goal is to prepare easily digestible animal feed, the residence time of the material in the system can be controlled to achieve moderate degradation of crude fiber, thereby improving its nutritional value and palatability.

[0051] Complete degradation: If the goal is to maximize the production of bioenergy (such as biogas), the material can be allowed to go through the entire process to achieve the most thorough decomposition.

[0052] This qualitative and quantitative process control capability transforms the invention from a single-target degradation tool into a multifunctional plant fiber "biorefining platform," capable of producing intermediate or final products in different states and for different uses, greatly expanding the industrial application prospects of plant fiber bioprocessing technology. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention;

[0054] Figure 2 This is a schematic diagram of the biomimetic rumen device in an embodiment of the present invention;

[0055] Figure 3 This is a schematic diagram of the structure of the biomimetic reticulum device in an embodiment of the present invention;

[0056] Figure 4 This is a schematic diagram of the structure of the biomimetic omasum device in an embodiment of the present invention;

[0057] Figure 5 This is a schematic side view of the biomimetic omasum device in an embodiment of the present invention;

[0058] Figure 6 This is a schematic diagram of the biomimetic abomasum device in an embodiment of the present invention;

[0059] Figure 7 This is a flowchart illustrating the implementation of the present invention;

[0060] Figure Labels

[0061] 1. Bionic rumen assembly; 2. Bionic reticulum assembly; 3. Bionic omasum assembly; 4. Bionic abomasum assembly;

[0062] 101. Fiber inlet; 102. Cutting mechanism; 103. Bionic rumen liquid inlet mechanism; 104. Flexible rumen body; 105. Rotating robotic arm; 106. Rotating chassis; 107. Solid-liquid mixing pipe; 108. Material pump; 109. Liquid inlet; 110. Exhaust port;

[0063] 201. Bionic mesh stomach liquid inlet mechanism; 202. Secondary telescopic rod; 203. Upper cover of bionic mesh stomach; 204. Circular filter screen; 205. Main body of bionic mesh stomach; 206. Fermentation broth reflux pump; 207. Fermentation broth reflux pipe; 208. Liquid tank pump; 209. Fiber passage pipe; 210. Fermentation broth / cleaning solution drain pipe; 211. Cleaning solution injection pipe;

[0064] 301. Reticulum-Omastomy connection mechanism; 302. Bionic omasum upper cover; 303. Bionic omasum body; 304. Primary conveyor belt; 305. Secondary conveyor belt; 306. Tertiary conveyor belt; 307. Primary baffle; 308. Secondary baffle; 309. Drop platform;

[0065] 401. Upper cap of abomasum; 402. Primary screen of abomasum; 403. Secondary screen of abomasum; 404. Abomasum collection tray; 405. Vibrating pendulum; 406. Upper shell of vibrating screen; 407. Swing spring; 408. Electric swing shaft; 409. Motor base. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following description will be provided in conjunction with the accompanying drawings of the embodiments of the present invention. Figures 1 to 7 The technical solutions of the present invention have been clearly and completely described. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0067] In the description of this invention, it should be understood that the terms "center", "around", "lateral", "longitudinal", "length", "thickness", "angle", "up", "down", "left", "right", etc., which indicate the orientation or location, are limited to simplifying the description of this invention and are not specific locations or orientations. The above terms are not intended to limit this invention.

[0068] like Figure 1 As shown, this embodiment provides a biomimetic fermentation device for plant fiber processing. This device simulates the digestive system of ruminants (such as cattle), achieving efficient degradation of plant fibers and targeted preparation of target products through graded processing. The device comprises four fluidly connected core assemblies along the material flow direction: a biomimetic rumen assembly 1, a biomimetic reticulum assembly 2, a biomimetic omasum assembly 3, and a biomimetic abomasum assembly 4. These assemblies are connected in series via connecting pipes and a transmission mechanism. The connecting pipes and transmission mechanism can operate unidirectionally using one-way valves, forming a continuous, closed, and controllable material processing flow path.

[0069] Specifically, the biomimetic rumen assembly 1, as the primary unit of the fermentation process, is mainly used to construct an anaerobic fermentation environment. It internally defines a main fermentation chamber for containing plant fiber raw materials and inoculated microorganisms. In this embodiment, the inner wall of the main fermentation chamber is made of a flexible or elastic material (such as food-grade silicone, rubber, or polymer composite materials) to simulate the flexible characteristics of a real rumen wall. A driving mechanism is provided outside the flexible inner wall, configured to apply periodic squeezing and kneading forces to the flexible inner wall, simulating the physical peristalsis of the rumen. This design promotes thorough mass transfer and mixing of the material and fermentation broth, and also breaks down the dense structure of the fibers through physical action, thereby improving fermentation efficiency. The top of the biomimetic rumen assembly 1 has a feed inlet, such as a funnel-shaped structure. Its shell is preferably made of a corrosion-resistant metal material such as 304 or 316L stainless steel to ensure the structural strength and durability of the device.

[0070] The solid-liquid mixture after initial fermentation in the biomimetic rumen assembly 1 is transferred to the biomimetic reticulum assembly 2 via a hydraulic conveying system (such as a hydraulic pump). The biomimetic reticulum assembly 2 is configured as a multi-functional processing unit, primarily performing solid-liquid separation, chemical cleaning (such as alkali washing and alcohol washing), and neutralization sterilization. Internally, it integrates a filtration module (such as a filter screen or membrane filter), a liquid spray assembly, and a waste liquid discharge pipeline, enabling efficient separation of the fermentation broth from the solid fibers and removal of impurities such as lignin and hemicellulose according to process requirements, providing pure solid materials for subsequent processes.

[0071] Subsequently, the cleaned solid material is conveyed to the biomimetic omasum assembly 3. This assembly mimics the physiological function of the omasum in reabsorbing water and is mainly used for dehydration and drying of the material. In this embodiment, the biomimetic omasum assembly 3 employs a multi-stage drying structure, using a combination of one or more drying methods such as hot air, vacuum, infrared, or microwave to reduce the moisture content of the fibrous material to a preset range. This staged drying design helps to precisely control the drying rate and prevent the material from denaturing due to localized overheating.

[0072] Finally, the dried material enters the biomimetic abomasum assembly 4. This assembly simulates the end-of-life processing function of the abomasum, mainly used for product grading and screening. It is equipped with at least one screening mechanism (such as a vibrating screen or drum screen), configured to separate fermentation products according to particle size or physical properties, thereby obtaining target products that meet specific specifications (such as partially degraded cellulose or feed pellets of a specific size), and separating out unreacted coarse particles.

[0073] Furthermore, the device described in this embodiment constructs differentiated "ecological niches" for different types of microorganisms through physical spatial isolation and independent control of environmental parameters. The specific implementation method is as follows:

[0074] 1. The "Anaerobic Hydrolysis Niche" of the Bionic Rumen Assembly: The flexible rumen body 104, combined with a sealing structure, creates a strictly anaerobic environment. By controlling the fluid replenishment volume of the bionic rumen fluid inlet mechanism 103, a high water content (e.g., 80%-90%) and a suitable temperature are maintained within the cavity. This environment is specifically designed for hydrolytic bacteria and acid-producing bacteria (such as cellulose-decomposing bacteria), utilizing their anaerobic properties to degrade large cellulose molecules in plant fibers into small organic acids, completing the initial cell wall disruption and softening.

[0075] 2. The "Microbial Retention and Environmental Switching Site" of the Bionic Reticulated Stomach Assembly: The bionic reticulated stomach assembly 2 utilizes a filter and reflux logic to act as a "filter" for the ecological niche. It refluxes liquid rich in hydrolyzing bacteria back to the rumen, maintaining the abundance of rumen microbiota; at the same time, by injecting a cleaning solution (alkali or alcohol), it rapidly changes the pH value or chemical environment of the solid phase material, thereby terminating the activity of hydrolyzing bacteria and preparing for the next stage.

[0076] 3. The "Aerobic / Low-Moisture Niche" of the Bionic Abomasum Assembly: The interior of the bionic omasum assembly 3 is in a non-liquid-immersed state. Through the agitation of the conveyor belt and the introduction of a drying medium (such as hot air), a relatively aerobic solid-state fermentation environment with gradually decreasing moisture content (e.g., from 60% to 40%) is constructed. Depending on process requirements, drought-resistant, aerobic fungi (such as white-rot fungi or other lignin-degrading fungi) can be inoculated or enriched at this stage. The mycelial penetration of the fungi further decomposes recalcitrant lignin, while avoiding material spoilage caused by the excessive proliferation of anaerobic bacteria.

[0077] By connecting the three assemblies in series, this device achieves continuous environmental changes in space, from "anaerobic-cleaning switching to aerobic / low humidity," allowing microbial communities (bacteria, fungi) with different habits to function without interfering with each other and each to play its role in its optimal "ecological niche."

[0078] In summary, the biomimetic fermentation device of this embodiment modularly replicates the physiological functions of the four chambers of the bovine stomach, deconstructing the complex biodegradation process into independently controllable physicochemical unit operations. Operators can flexibly adjust the operating parameters of each assembly (such as kneading frequency, cleaning medium, drying temperature, and sieving mesh size) according to the characteristics of the raw materials and the target product requirements, achieving diversified process control from targeted impurity removal and partial modification to complete degradation, demonstrating significant industrial application value.

[0079] like Figure 2As shown in the figure, this embodiment discloses an exploded structural diagram of the biomimetic rumen assembly 1. This assembly is the core unit for the preliminary physical crushing and anaerobic fermentation of plant fiber raw materials, and its structure simulates the peristaltic and grinding functions of the bovine rumen. The biomimetic rumen assembly 1 mainly includes: a fiber inlet 101, a cutting mechanism 102, a biomimetic rumen liquid inlet mechanism 103, a flexible rumen body 104, at least one rotating robotic arm 105, and a rotating chassis 106.

[0080] Specifically, the flexible rumen body 104 constitutes the main cavity for containing materials and carrying out biochemical reactions. In this embodiment, the flexible rumen body 104 is preferably capsule-shaped or ellipsoidal. Considering the strong abrasiveness and entanglement of plant fiber raw materials (such as straw), its wall is made of a flexible material with high wear resistance and high resilience, preferably thickened food-grade silicone or special fluororubber, with a wall thickness designed to withstand long-term mechanical abrasion without damage. This flexible structure allows it to deform under external force, thereby simulating the contraction and peristalsis of a real rumen. The rollers of the drive mechanism and the flexible wall adopt an interference fit to form a vertical line contact or surface contact compression zone. When the rollers revolve, this compression zone moves along the circumferential direction, forcing the high solids content material inside to generate strong turbulence and shear dislocation, effectively solving the entanglement and dead angle problems that easily occur when traditional stirring paddles handle long fiber materials.

[0081] A fiber inlet 101, a cutting mechanism 102, and a biomimetic rumen liquid inlet mechanism 103 are integrated at the top of the flexible rumen body 104. The fiber inlet 101 can be configured as a funnel-shaped structure for introducing plant fiber raw materials (such as unchopped straw) to be processed. The cutting mechanism 102 is located downstream of the fiber inlet 101 and preferably includes a rotating blade assembly, configured to initially cut and crush the incoming raw material to reduce its size and increase its specific surface area, thus facilitating subsequent fermentation.

[0082] The biomimetic rumen inlet mechanism 103 employs a four-way pipe structure, which plays a crucial role in material convergence and distribution. The four interfaces of this four-way structure are connected as follows: the first interface connects to the outlet of the cutting mechanism 102 to receive the physically crushed solid plant fiber raw material; the second interface connects to the liquid return port of the biomimetic reticulum assembly 2 to receive the rumen fluid rich in active microorganisms returning from the reticulum, enabling inoculation and circulation of the microbial community; the third interface is the inlet 109, used to replenish the fermentation broth components; and the fourth interface connects to the exhaust port 110. The exhaust port 110 directly connects to the flexible cavity of the biomimetic rumen assembly 1, serving as an exhaust channel for fermentation gases when the internal pressure of the system is too high. This mechanism is configured to mix the aforementioned solid fibers, returned bacterial solution, and fermentation broth before injecting it into the rumen for fermentation.

[0083] The side wall of the exhaust port 110 is provided with a bypass for connecting the exhaust valve (or water seal assembly). When fermentation waste gas is generated in the chamber, causing the gas pressure to rise, the gas is discharged through the exhaust port 110 located at the top, thus controlling the stability of the fermentation environment.

[0084] This multi-channel confluence design simulates the physiological process of the mixing of food bolus, saliva, and rumen fluid at the rumen entrance of ruminants.

[0085] The solid-liquid mixing pipe 107 leading to the next-level bionic mesh stomach assembly 2 is located at the center of the rotating chassis 106, i.e., the bottom of the device. This vertical spatial distribution of "exhausting gas from the top exhaust port 110 and discharging material from the bottom solid-liquid mixing pipe 107" physically eliminates the possibility of gas being sucked into the bottom delivery pipe, thereby ensuring that gas does not flow into the bionic mesh stomach assembly 2.

[0086] A peristaltic-simulating drive mechanism is arranged around the exterior of the flexible rumen body 104. This mechanism includes a rotating chassis 106 and several rotating robotic arms 105 fixedly connected to the chassis. In this embodiment, four rotating robotic arms 105 are preferably arranged, evenly distributed along the circumference of the flexible rumen body 104 (e.g., in the front, back, left, and right directions). Each rotating robotic arm 105 is equipped with at least one independent roller; in this embodiment, there are three. The rollers are annular or wheel-shaped, preferably made of wear-resistant hard plastic or metal, and configured to rotate freely about their own axis (self-rotation). The inner surface of the roller maintains contact or a small gap with the outer wall surface of the flexible rumen body 104.

[0087] During operation, the drive source drives the rotating chassis 106 to rotate, causing the fixed rotating robotic arm 105 to revolve around the central axis of the flexible rumen body 104. During this revolution, the rollers on the rotating robotic arm 105 roll along the outer wall of the flexible rumen body 104, applying continuous and periodic squeezing and kneading forces to the flexible wall. This circumferential mechanical action efficiently simulates the strong peristalsis of the biological stomach wall, forcing the fibrous material and fermentation broth in the cavity to be fully mixed, tumbled, and ground, thereby significantly improving the physical crushing effect and the mass transfer efficiency of the biochemical reaction.

[0088] A solid-liquid mixing pipe 107, which is connected to the bionic reticulum assembly 2, is provided at the center of the rotating chassis 106. A material pump 108 is provided on the pipe to pump the solid-liquid mixture into the bionic reticulum assembly 2.

[0089] like Figure 3The diagram shown is an exploded view of the biomimetic reticulum assembly 2 in an embodiment of the present invention. This biomimetic reticulum assembly 2 receives material from the biomimetic rumen assembly 1 and simulates the function of the reticulum in ruminants, performing multi-stage solid-liquid separation, dehydration by compression, and chemical cleaning (such as alkaline washing and alcohol washing) on ​​the material. The biomimetic reticulum assembly 2 is arranged vertically and mainly includes a biomimetic reticulum liquid inlet mechanism 201, a secondary telescopic rod 202, a biomimetic reticulum upper end cover 203, a biomimetic reticulum body 205, and supporting fluid conveying components.

[0090] Specifically, the bionic reticulum liquid inlet mechanism 201 is located at the top. The upper end of the secondary telescopic rod 202 (e.g., a multi-stage hydraulic cylinder or pneumatic cylinder) is connected to the bionic reticulum liquid inlet mechanism 201, and the lower end is connected to the upper cover 203 of the bionic reticulum. The secondary telescopic rod 202 preferably has a hollow structure, allowing the cleaning fluid injection pipe 211 to pass through and extend into the interior of the reticulum (other media such as alcohol can be reused and transmitted through the bottom pipeline), thereby simplifying the pipeline layout. The cleaning fluid injection pipe 211 is referred to as an alkali delivery pipe, a distillate delivery pipe, or an alcohol delivery pipe depending on the injection medium. The extension and retraction of the secondary telescopic rod 202 drives the upper cover 203 of the bionic reticulum to reciprocate axially within the inner cavity of the bionic reticulum body 205. The outer periphery of the upper cover 203 of the bionic reticulum forms a sliding seal with the inner wall of the bionic reticulum body 205.

[0091] The biomimetic mesh stomach body 205 defines a processing chamber, and its bottom is equipped with a solid-liquid separation mechanism and a discharge port. The discharge port is connected to the liquid tank pump 208 through a fermentation broth / washing liquid discharge pipe 210. This fermentation broth / washing liquid discharge pipe 210 is not only used to discharge fermentation broth and waste liquid, but can also serve as an inlet and outlet channel for alcohol or alkali liquid when specific processes such as alcohol washing or alkali washing are required. The solid-liquid separation mechanism includes several circular filter screens 204 for retaining fibers and discharging liquid.

[0092] In terms of fluid control, a liquid tank pump 208 is located at the bottom of the device. This pump, together with the multi-channel valve control system, constitutes the core logic control unit of the fluid delivery component. The liquid tank pump 208 acts as a three-way or reversing valve, determining whether the liquid goes to the "return pipe" or the "external discharge". This component is equipped with specific timing control logic to distinguish it from conventional filter press equipment.

[0093] Phase 1 (Microbial Recovery): When the solid-liquid mixture containing the fermentation broth enters the biomimetic reticulated stomach body 205, the control valve only opens the fermentation broth / washing liquid drain pipe 210 and the fermentation broth return pipe 207, while closing the washing liquid injection pipe 211. At this time, the upper cover 203 of the biomimetic reticulated stomach is pressed down, forcing the liquid rich in rumen functional bacteria to pass through the filter screen and return to the biomimetic rumen assembly 1 through the fermentation broth return pump 206, thus realizing the recycling of microbial strains.

[0094] Second stage (chemical treatment): The upper end cap 203 of the bionic mesh stomach is reset, the control valve is opened to open the cleaning liquid injection pipe 211, the chemical cleaning liquid is injected to soak the solid residue, and the fermentation liquid / cleaning liquid drain pipe 210 is closed.

[0095] Third stage (waste liquid discharge): After the reaction is completed, the control valve is switched to open the fermentation liquid / washing liquid drain pipe 210 and close the fermentation liquid return pipe 207. The upper cover 203 of the bionic mesh stomach is pressed down again to discharge the chemical waste liquid containing impurities such as lignin from the system.

[0096] The liquid tank pump 208 is connected to the external cleaning fluid and drainage channel, and is responsible for introducing the cleaning fluid into the device and discharging the chemical waste liquid.

[0097] Through the aforementioned time-sharing control, this device integrates two distinct and mutually exclusive processes—biological microbial community recovery and chemical impurity removal—within a single chamber.

[0098] like Figure 4 and Figure 5 The figures shown are an isometric view and a side view of the biomimetic omasum assembly 3 in an embodiment of the present invention. This biomimetic omasum assembly 3 receives secondary products from the biomimetic reticulum assembly 2. Its core function is to simulate the lamellar structure and reabsorption function of the ruminant omasum, performing multi-stage folding drying treatment on the material. The biomimetic omasum assembly 3 mainly consists of a reticulum-omasum connecting mechanism 301, a biomimetic omasum upper cover 302, and a biomimetic omasum body 303. The reticulum-omasum connecting mechanism 301 is located at the top and serves as a material input channel connecting to the previous stage device. The biomimetic omasum upper cover 302 seals and closes to the top of the biomimetic omasum body 303, together forming a drying chamber. The side wall or top of the biomimetic omasum body 303 may be provided with a heat medium inlet and a moisture outlet for introducing the drying medium and discharging moisture. The biomimetic omasum body 303 features a compact, multi-stage, folded drying assembly. This assembly consists of staggered, multi-layered conveyor belts and guide baffles, arranged in a Z-shape or serpentine pattern. Specific structural features include:

[0099] Multi-stage conveyor assembly: a primary conveyor belt 304, a secondary conveyor belt 305, and a tertiary conveyor belt 306 arranged sequentially from top to bottom. Each conveyor belt is controlled by a drive motor, preferably set to a low-speed operation mode to extend the residence time of the material in the drying chamber.

[0100] Material guiding assembly: Inclined material guiding baffles are provided between adjacent conveyor belts, including a primary baffle 307 located between the primary conveyor belt 304 and the secondary conveyor belt 305, and a secondary baffle 308 located between the secondary conveyor belt 305 and the tertiary conveyor belt 306. A sliding platform 309 is provided below the end of the tertiary conveyor belt 306.

[0101] During operation, the material falls from the inlet, is conveyed by the primary conveyor belt 304, slides down to the primary baffle 307, and is then guided to the secondary conveyor belt 305, and so on, finally converging at the bottom outlet via the sliding platform 309. This design significantly increases the travel length and heat exchange surface area of ​​the material within a limited space. Combined with the introduction of drying media such as hot air, infrared, or microwaves into the cavity, the moisture content of the secondary product can be reduced to a preset level, forming the tertiary product, which is then conveyed to the next stage, the biomimetic abomasum assembly 4.

[0102] like Figure 6 The diagram shown is a schematic representation of the biomimetic abomasum assembly 4 in an embodiment of the present invention. This device simulates the end-processing function of the abomasum, utilizing the principle of vibration sieving to perform fine grading and screening of the dried tertiary products. The biomimetic abomasum assembly 4 mainly comprises, from top to bottom, a vibration sieving unit, a vibration drive mechanism, and a motor base 409.

[0103] The vibrating screening unit is composed of an upper cover 401 for the abomasum, a primary screen 402 for the abomasum, a secondary screen 403 for the abomasum, and a collection tray 404 for the abomasum, all stacked and interlocked. The upper cover 401 for the abomasum has a feed inlet; the mesh count of the primary screen 402 and the secondary screen 403 for the abomasum increases sequentially (the aperture decreases sequentially), which is used to achieve multi-stage particle size separation; the bottom abomasum collection tray 404 is used to collect the final fine particle product.

[0104] Vibration drive mechanism: Located below the vibrating screening unit, it includes an upper housing 406 of the vibrating screen, an electric swing shaft 408, a vibrating pendulum 405, and swing springs 407. The electric swing shaft 408 is vertically mounted on the motor base 409, with its top end extending into the housing and connecting to the vibrating pendulum 405 (such as an eccentric block). Several swing springs 407 are arranged around it; in this embodiment, there are three, connecting the motor base 409 and the upper housing 406 of the vibrating screen, providing elastic support.

[0105] During operation, the electric swing shaft 408 drives the vibrating pendulum 405 to rotate, generating centrifugal force. With the assistance of the swing spring 407, this drives the upper vibrating screening unit to generate high-frequency vibration. The material jumps and moves on the screen surface. Coarse particles larger than the aperture of the primary screen 402 are retained, medium particles are retained on the secondary screen, and fine particles smaller than the aperture of the secondary screen fall into the collection tray, thus achieving precise product grading. The retained oversize material (coarse and medium particles) can be periodically cleaned and recovered by opening the upper cover 401 of the abomasum or the reserved side discharge port.

[0106] like Figure 7As shown in this embodiment, a biomimetic fermentation process for plant fiber treatment is provided, mainly including steps such as raw material pretreatment, biomimetic rumen fermentation, biomimetic reticulum solid-liquid separation and chemical cleaning, biomimetic omasum drying, and biomimetic abomasum grading and screening. The process parameters of each step can be directionally adjusted according to different application requirements. The specific process is as follows:

[0107] S1. Raw material preparation steps

[0108] The plant fiber raw materials to be processed (such as corn stalks, rice straw, etc.) are pre-treated by cutting or coarsely crushing, and the moisture content is adjusted according to the process requirements before being sent into the biomimetic rumen assembly 1 through the fiber inlet 101.

[0109] S2, Bionic Rumen Fermentation Steps

[0110] After the raw materials enter the biomimetic rumen assembly 1, they are first chopped a second time by the cutting mechanism 102 to reduce fiber size and increase specific surface area, and then fall into the main fermentation chamber of the flexible rumen body 104. Specific fermentation strains are inoculated in the chamber, and suitable anaerobic, temperature, and pH conditions are maintained to allow the plant fibers to undergo primary hydrolysis and acid-producing fermentation.

[0111] During this process, the rotary robotic arm 105 revolves around the flexible rumen body 104 under the drive of the rotary chassis 106, and uses its rollers to apply periodic squeezing and kneading to the flexible inner wall. This action simulates the peristalsis of the rumen in nature, enhances the mixing and physical crushing effect of the material and fermentation liquid, thereby producing a solid-liquid mixture containing fermentation liquid.

[0112] S3, Bionic mesh gastric solid-liquid separation and chemical cleaning steps

[0113] The solid-liquid mixture from the bionic rumen assembly 1 is transported into the bionic reticulum body 205 of the bionic reticulum assembly 2, and the time-sharing control logic of the fluid transport component is strictly executed, and the following processes are performed sequentially:

[0114] S3a. First compression stage (microbial recovery): The control system first opens the fermentation broth return pipe 207 and the fermentation broth / washing liquid drain pipe 210, and closes the washing liquid injection pipe 211. The secondary telescopic rod 202 drives the upper cover 203 of the biomimetic rumen to descend, applying compression to the material. The microbial-rich fermentation broth separates through the filter assembly (such as the circular filter 204) and flows back to the biomimetic rumen assembly 1, realizing the recycling of microorganisms.

[0115] S3b. Chemical cleaning stage (injection and soaking):

[0116] The upper cover 203 of the bionic reticulum is reset. If alkaline washing is performed, alkaline solution is injected through the alkaline solution delivery pipe (cleaning solution injection pipe 211); if alcohol washing is performed, the liquid tank pump 208 is reversed, and alcohol solution is injected into the bionic reticulum body 205 through the alcohol solution delivery pipe (cleaning solution injection pipe 211). The material is immersed and cleaned inside the reticulum to remove some lignin, hemicellulose, or organic impurities.

[0117] S3c. Second extrusion stage (waste liquid discharge): After the cleaning reaction is completed, the control system switches the fermentation liquid / cleaning liquid drain pipe 210. The upper end cover 203 of the bionic mesh stomach is driven downward again to extrude the chemical waste liquid containing impurities, thereby obtaining the cleaned secondary product.

[0118] S3d. Solid phase discharge: After the above time-sharing process is completed, the secondary telescopic rod 202 pushes the upper cover 203 of the bionic mesh stomach to the discharge position and drives it to rotate. The elastic sweeping structure at the bottom of the upper cover 203 of the bionic mesh stomach scrapes the secondary solid phase product to the central outlet and is transported to the next stage through the fiber passage pipe 209.

[0119] S4, Bionic Oval Stomach Drying Steps

[0120] The secondary product enters the biomimetic omasum assembly 3 and is conveyed within the biomimetic omasum body 303 along a multi-stage folded drying component. The material sequentially passes through a primary conveyor belt 304, a primary baffle 307, a secondary conveyor belt 305, a sliding platform 309, and a tertiary conveyor belt 306, forming an extended "Z"-shaped conveying trajectory. During this process, hot air and other drying media are used to fully contact the material, gradually reducing its moisture content to obtain a dried tertiary product.

[0121] S5. Bionic abomasal grading and screening steps

[0122] The dried tertiary product enters the vibrating screening unit of the biomimetic abomasum assembly 4. Driven by the electric swing shaft 408 and the vibrating pendulum 405, the screen body generates high-frequency vibration. The material first passes through the abomasum primary screen 402 for coarse screening, where large particles are retained; the material that passes through the screen falls into the abomasum secondary screen 403 for fine screening, and the fine particles finally collect in the abomasum collection tray 404. This achieves multi-stage sorting of the product according to particle size.

[0123] S6. Process Mode Selection and Control

[0124] By jointly adjusting the operating parameters of each component (such as fermentation time, washing intensity, drying temperature, sieve mesh size, etc.), this invention can achieve multiple process modes:

[0125] Targeted impurity removal mode: focuses on chemical cleaning of the biomimetic reticulum and controls the intensity of rumen fermentation to obtain high-purity cellulose (for papermaking and textiles).

[0126] Partial degradation and modification mode: Extend the fermentation time and wash appropriately, combined with physical sieving, to prepare easily digestible feed or functional crude fiber.

[0127] Complete degradation mode: Enhance the fermentation broth reflux and anaerobic fermentation time to completely decompose the fiber and maximize the production of bioenergy (such as biogas).

[0128] Through the above steps and mode configuration, the biomimetic fermentation device and method provided by the present invention can realize continuous and programmable processing of plant fibers from raw material pretreatment to multi-stage fermentation, chemical impurity removal, drying and particle size classification within the same system. Furthermore, the degree of fermentation and product form can be flexibly selected according to different industrial application scenarios, which greatly improves the efficiency and applicability of plant fiber resource utilization.

[0129] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and does not limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A biomimetic fermentation device for plant fiber treatment, characterized in that, include: A biomimetic rumen assembly is used for the physical crushing and anaerobic fermentation of plant fiber raw materials to produce a solid-liquid mixture. The bionic reticulated rumen assembly is used to separate solid-liquid mixtures into solid and liquid phases. The liquid phase is transported to the bionic rumen assembly, and the solid phase is chemically cleaned to obtain secondary products. A biomimetic omasum assembly is used to dehydrate and dry secondary products to obtain tertiary products. And a biomimetic abomasum assembly, used for grading and screening the particle size of tertiary products; The bionic rumen assembly, bionic reticulum assembly, bionic omasum assembly, and bionic abomasum assembly are connected in series via connecting pipes and transmission mechanisms to form a continuous and closed material handling flow path. The bionic rumen assembly includes a flexible rumen body and a drive mechanism disposed on the outside of the flexible rumen body; The flexible rumen body is made of a highly elastic flexible material; The drive mechanism includes a rotating chassis and a rotating robotic arm. At least one rotating robotic arm is provided. The rotating robotic arm and the flexible rumen body are fixedly mounted on the rotating chassis. The rotating robotic arm extends longitudinally. The flexible rumen body is located at the center of several rotating robotic arms. The rotating robotic arm and the flexible rumen body are press-fitted and in compression contact. A pipe communicating with the bionic reticulum assembly is provided at the center of the rotating chassis. The top of the flexible rumen body is provided with a fiber inlet, a cutting mechanism, and a biomimetic rumen fluid inlet mechanism. The bionic rumen liquid inlet mechanism is provided with four interfaces and one main inlet. The four interfaces are as follows: the first interface is connected to the outlet of the cutting mechanism, the second interface is connected to the liquid phase reflux port of the bionic reticulum assembly, the third interface is the liquid inlet, and the fourth interface is connected to the exhaust port. The exhaust port is directly connected to the interior of the flexible rumen body of the bionic rumen assembly via a pipe; the exhaust port is connected to a one-way exhaust valve or a water seal assembly. The biomimetic rumen liquid inlet mechanism is configured such that solid plant fiber raw material input from the cutting mechanism, liquid material returning from the biomimetic reticulum assembly, and fresh fermentation liquid or buffer solution injected from the inlet are combined within the structure of the biomimetic rumen liquid inlet mechanism and injected into the biomimetic rumen assembly; fermentation gas generated in the biomimetic rumen assembly is discharged through the exhaust port under positive pressure. The bionic reticulated stomach assembly includes a bionic reticulated stomach body, a bionic reticulated stomach upper cover, a liquid tank pump, and several fluid delivery components; The upper cover of the bionic reticulum is set on the main body of the bionic reticulum and is sealed to the inner cavity of the main body of the bionic reticulum. The upper cover of the bionic reticulum is connected to a hollow telescopic rod to perform reciprocating piston-like compression in the inner cavity of the main body of the bionic reticulum. The other end of the telescopic rod is connected to a bionic reticulum liquid inlet mechanism, which is connected to the bionic rumen assembly through a solid-liquid mixing pipe. Both the bionic mesh stomach liquid inlet mechanism and the main body of the bionic mesh stomach are connected to the liquid tank pump through a fluid delivery component; The bottom of the bionic omasum body is equipped with a fiber passage channel. The inlet of the channel is equipped with an openable and closable sealing valve, which remains closed during the liquid extrusion and separation stage and opens during the discharge stage to transport the generated secondary products to the bionic omasum assembly. The fiber channel pipe is not connected to the liquid tank pump; The lower surface of the upper cap of the bionic mesh stomach is provided with an elastic sweeping structure; The fluid delivery assembly includes: Cleaning fluid injection pipe used to connect the bionic mesh stomach liquid inlet mechanism with the liquid tank pump; Fermentation broth / cleaning broth drain pipe used to connect the bionic reticulated stomach body to the liquid tank pump; And a fermentation broth return pipe for connecting the liquid tank pump and the biomimetic rumen assembly.

2. The biomimetic fermentation device for plant fiber treatment according to claim 1, characterized in that, The rotary robotic arm includes a boom and rollers mounted on the boom via bearings. There is at least one roller. The rotating chassis drives the rotary robotic arm to revolve around the central axis of the flexible rumen body. The rollers are interference-fitted with the inner wall of the flexible rumen body, and the two form a vertical line contact or surface contact compression zone.

3. The biomimetic fermentation device for plant fiber treatment according to claim 1, characterized in that, The biomimetic omasum assembly is equipped with a multi-stage folded drying component, including at least two stages of conveyor belts with staggered material flow directions and guide baffles set between adjacent conveyor belts. The conveyor belts and guide baffles make the material transport path present a Z-shape or serpentine shape.

4. The biomimetic fermentation device for plant fiber treatment according to claim 1, characterized in that, The biomimetic abomasum assembly includes a vibrating screening unit and a vibration drive mechanism located below the screening unit; The vibrating screening unit includes at least two layers of screens stacked together, with the screen aperture decreasing sequentially along the material flow direction; The vibration drive mechanism includes an electric swing shaft and an eccentric pendulum, which are used to drive the screen to generate high-frequency vibration.

5. A biomimetic fermentation method for treating plant fibers, characterized in that, The biomimetic fermentation device for plant fiber treatment according to any one of claims 1-4 is implemented by comprising the following steps: S1. Bionic rumen processing: Within the bionic rumen assembly, the flexible wall is driven by a drive mechanism to generate periodic deformation and peristalsis, which physically crushes and anaerobic ferments the plant fiber raw material to produce a solid-liquid mixture. S2, Bionic reticulum separation and circulation: The solid-liquid mixture is transported to the bionic reticulum assembly and the time-sharing control logic is executed: First, the fermentation liquid is squeezed out and returned to the bionic rumen assembly. Then, the remaining solid material is injected with chemical cleaning liquid for cleaning and squeezed out again to discharge the waste liquid, thereby obtaining the secondary product. S3, Bionic omasum drying: The secondary product is transported to the bionic omasum assembly, transferred and dehydrated on the multi-stage folded drying component to obtain the tertiary product; S4. Bionic abomasum grading: The tertiary products are transported to the bionic abomasum assembly, and target products of different particle sizes are obtained by vibration sieving.

6. The biomimetic fermentation method for treating plant fibers according to claim 5, characterized in that, In step S2, the type of chemical cleaning solution in the bionic reticulum assembly is selectively adjusted to be alkaline solution, alcohol solution or distilled water according to the target product requirements, and the fermentation time of the bionic rumen assembly is also adjusted. The time-sharing control logic for the fluid delivery component is as follows: In the first extrusion stage, the cleaning fluid injection pipe is closed, the fermentation broth return pipe and the fermentation broth / cleaning fluid drain pipe are connected, and the extruded fermentation broth rich in bacteria is returned to the biomimetic rumen assembly. During the chemical cleaning stage, shut off the fermentation broth / cleaning solution drain pipe; control the opening of the cleaning solution injection pipe to inject chemical cleaning solution into the remaining solid material; In the second squeezing stage, the cleaning liquid injection pipe and the fermentation liquid return pipe are closed, and the fermentation liquid / cleaning liquid drain pipe is controlled to open, or the fermentation liquid / cleaning liquid drain pipe is controlled to open in reverse, so that the waste liquid after cleaning is discharged from the device.

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