Rice bran and rice bran meal fermentation apparatus

Abstract

The present application relates to the technical field of fermentation equipment, and particularly relates to a rice bran and rice bran meal fermentation device; the device can reduce the sedimentation and agglomeration height of rice bran or rice bran meal, improve the uniformity of the contact between the rice bran or rice bran meal and fermentation liquid, improve the fermentation effect of the rice bran or rice bran meal, and facilitate the cleaning of the residual solid after fermentation; the device comprises a mounting seat and a fermentation tank mounted on the mounting seat, a layered material uniformizing mechanism is mounted in the fermentation tank, the layered material uniformizing mechanism comprises a filter bag and a plurality of filter plates uniformly distributed in the filter bag from top to bottom, a containing cavity is enclosed between two adjacent filter plates and the filter bag from top to bottom, the containing cavity is used for containing rice bran or rice bran meal, a plurality of through holes are arranged on the filter plate and uniformly distributed and vertically penetrating, an opening is arranged at the top of the fermentation tank, a cover is hingedly mounted on the fermentation tank and matched with the opening, and the bag opening of the filter bag is detachably mounted at the top opening of the fermentation tank; a sliding rod is slidably mounted on the bottom of the fermentation tank, and a first lifting driving element is mounted on the mounting seat and provides power for the upward and downward sliding of the sliding rod.

Description

Technical Field

[0001] This invention relates to the technical field of fermentation equipment, and in particular to a fermentation device for rice bran and rice bran meal. Background Technology

[0002] Rice bran and rice bran meal, generated during rice processing, are important agricultural by-products. Statistics show that global annual rice bran production exceeds ten million tons, and their comprehensive utilization is crucial for enhancing the added value of grains and promoting the development of a circular economy. Rice bran and rice bran meal are rich in various nutrients, with protein content being particularly prominent, typically accounting for 15%–17% of dry weight, in addition to oils and dietary fiber. Their amino acid composition is relatively balanced, with a high lysine content, digestibility exceeding 90%, and low allergenicity, making them suitable for infant and special population nutritional foods. They also possess high biological value, representing a high-quality plant protein resource with excellent development potential.

[0003] For example, patent application CN118086010A discloses a rice bran fermentation device for feed processing, including a fermentation cylinder. The fermentation cylinder contains a rotating shaft, a support arm, a drive assembly, and a stirring cylinder. The rotating shaft is vertically rotatable and located in the center of the fermentation cylinder. The support arm is horizontally positioned at the top of the fermentation cylinder, and the drive assembly can slide along the length of the support arm. The stirring cylinder is rotatably mounted on the drive assembly, and a first feed inlet is located at the bottom of the stirring cylinder. The stirring cylinder contains a lifting assembly and a cleaning assembly. The rotating shaft drives the support arm, which in turn drives the stirring cylinder to stir the rice bran inside the fermentation cylinder. The lifting assembly allows for thorough mixing of the rice bran at the top and bottom of the fermentation cylinder, improving fermentation efficiency. The drive assembly moves the stirring cylinder, and the cleaning assembly cleans the inner wall of the fermentation cylinder, further improving fermentation efficiency.

[0004] However, when fermenting rice bran or rice bran meal in a traditional fermentation tank, the rice bran or rice bran meal tends to accumulate and settle at the bottom of the fermentation tank, affecting the uniformity of contact between microorganisms and rice bran or rice bran meal in the fermentation liquid, and thus affecting the fermentation effect of rice bran or rice bran meal. Although the above-mentioned device can achieve uniform mixing of bottom and top materials, its structure is complex; the residual solids after rice bran or rice bran meal fermentation are concentrated at the bottom of the fermentation tank, which is inconvenient to clean. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a rice bran and rice bran meal fermentation device that reduces the settling and agglomeration height of rice bran or rice bran meal, improves the uniformity of contact between rice bran or rice bran meal and fermentation liquid, enhances the fermentation effect of rice bran or rice bran meal, has a simpler and more reasonable structure, and facilitates the cleaning of residual solids after fermentation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fermentation device for rice bran and rice bran meal, comprising a mounting base and a fermentation tank mounted on the mounting base. A layered material equalization mechanism is installed inside the fermentation tank. The layered material equalization mechanism includes a filter bag and multiple filter plates evenly distributed from top to bottom within the filter bag. Adjacent filter plates and the filter bag form a cavity for holding rice bran or rice bran meal. The filter plates have multiple evenly distributed and penetrating through holes. The fermentation tank has an opening at the top, and a hinged cap that fits the opening is installed on the fermentation tank. The opening of the filter bag is detachably installed. At the top opening of the fermentation tank; furthermore, multiple screws are hinged to the top of the fermentation tank, and locking nuts are screwed onto the screws. After the cover is closed, the filter bag opening can be pressed between the cover and the fermentation tank; the filter bag can be a cloth bag, fiber bag, or other bag with plasticity and filtration effect. The filter bag is provided with filter holes that allow the fermentation liquid to pass through and intercept rice bran or rice bran meal solids; the through holes on the filter plate only allow the fermentation liquid to pass through, and rice bran or rice bran meal particles cannot pass through the through holes; the height of rice bran or rice bran meal in the cavity does not exceed 1 / 2 of the cavity height.

[0007] Preferably, a sliding rod is slidably installed at the bottom of the fermenter, and the top of the sliding rod is connected to a set of filter plates at the bottom of the fermenter. A first lifting drive component is installed on the mounting base to provide power for the sliding rod to slide up and down. Further, the first lifting drive component is preferably a telescopic cylinder, which is fixedly installed on the mounting base with its extended end facing downward. The extended end of the telescopic cylinder is fixedly connected to the sliding rod through a connecting plate. The first lifting drive component can also be other equivalent components that drive the sliding rod to slide up and down. Further, the top of the sliding rod is fixedly connected to the corresponding filter plate by bolts, and the top of the sliding rod and the bottom of the filter plate can also be threaded together.

[0008] Preferably, a bushing is rotatably mounted at the bottom of the fermenter, and the bushing has a sliding opening that allows the sliding rod to slide up and down. A rotation drive component that provides power for the rotation of the bushing is mounted on the mounting base. Further, the bushing is rotatably sealed to the fermenter through a mechanical shaft seal, and a rubber ring seal or packing seal is provided in the sliding opening. The sliding rod is slidably sealed to the inner wall of the bushing through the packing seal or rubber ring seal. The sliding opening can be polygonal, and the outer wall of the sliding rod fits into the inner wall of the sliding opening. Alternatively, multiple vertical sliding keys can be provided on the inner wall of the sliding opening, and a sliding groove is provided on the outer wall of the sliding rod that fits into the sliding key. The sliding key is slidably installed in the sliding groove to realize the transmission between the bushing and the sliding rod. The rotation drive component includes a motor and a transmission assembly. The motor is connected to the bushing through the transmission assembly. The transmission assembly can be a transmission belt, chain, or other transmission component with equivalent transmission effect. A transparent liquid level gauge communicating with the inside of the fermenter is provided on the fermenter to observe the liquid level in the fermenter in real time.

[0009] Preferably, the filter bag has multiple evenly spaced support rings arranged from top to bottom, and the filter plate is detachably installed on the support rings; further, the outer wall of the filter plate has external threads, the inner wall of the support ring has internal threads, and the filter plate is screwed into the support ring; the filter plate can also be detachably connected to the support ring by bolts or the like; the top opening of the fermenter has an annular groove, and a set of support rings at the top is placed in the annular groove.

[0010] Preferably, the outer diameter of the filter plate and the support ring gradually decreases from top to bottom, and the inner diameter of the filter bag gradually decreases from top to bottom following the outer diameter of the support ring. The support ring is provided with an annular opening that allows the lower filter plate to pass through. Furthermore, the outer diameter of the lower set of filter plates is smaller than the inner diameter of the annular opening on the upper adjacent set of support rings.

[0011] Preferably, a rod frame is fixedly installed on the top of the filter plate; further, a set of rod frames on the upper part of the fermentation tank is lower than the top of the filter plate, and the rod frames on multiple filter plates inside the fermentation tank are 10-30cm higher than the filter plates, which can be appropriately adjusted according to the model and size of the fermentation tank and filter bag and the height of the rice bran or rice bran meal material in the cavity.

[0012] Preferably, the fermenter is provided with an inlet pipe at the top and a feed channel on the cover. The outlet end of the feed channel is located above the filter bag. After the cover is closed with the fermenter, the outlet end of the inlet pipe is connected to the feed end of the feed channel. Furthermore, sealing rings are provided at the opening of the fermenter and at the outlet of the inlet pipe to ensure the sealing performance of the cover, the opening, and the inlet pipe.

[0013] Preferably, there is a gap of at least 10cm between the outer wall of the filter bag and the inner wall of the fermentation tank; furthermore, the gap between the outer wall of the filter bag and the inner wall of the fermentation tank can be adjusted according to actual needs based on the size of the filter bag and the fermentation tank, and the gap between the outer wall of the filter bag and the inner wall of the fermentation tank should allow the solid fermentation material in the filter bag to pass smoothly under the action of gravity.

[0014] Preferably, the cover is equipped with a pressure relief valve that communicates with the feed channel, and the bottom of the fermenter is provided with a drain pipe that communicates with the bottom of the fermenter; furthermore, the drain pipe is equipped with necessary valves such as a switch valve and a sampling valve; the fermenter is equipped with necessary components such as a temperature probe and a pH probe that extend into the fermenter, and a pressure gauge is installed at the pressure relief valve to detect the internal pressure value of the fermenter.

[0015] Preferably, it also includes a loading and unloading mechanism for loading and unloading filter bags into the fermentation tank. The loading and unloading mechanism includes a trolley, a second lifting drive unit mounted on the trolley, a drive turntable mounted on the second lifting drive unit, a lifting arm mounted on the drive turntable, and a multi-jaw clamp mounted on the lifting arm. The clamping end of the multi-jaw clamp is equipped with a vertical frame, and the bottom of the vertical frame is equipped with an arc-shaped clamping block. The arc-shaped clamping blocks on the multiple vertical frames form a ring that fits the outer diameter of the support ring. An inner support frame is mounted on the trolley. Furthermore, the height of the vertical frame is higher than the height of the filter bag, the inner support frame fits inside the filter bag, and the inner support frame is welded from multiple rods. The inner support frame is located directly below the annular trajectory of the multi-jaw clamp rotating around the center of the drive turntable. The second lifting drive component is preferably a telescopic mast, but other equivalent components such as telescopic cylinders that drive the drive turntable to move up and down can also be used. The drive turntable is preferably an electric turntable, but hydraulic or pneumatic turntables can also be used. An anti-slip layer needs to be provided at the end where the arc-shaped clamp block contacts the corresponding support ring. The anti-slip layer can be a rubber layer with anti-slip texture, or other anti-slip textures. The multi-jaw clamp has at least 3 sets of jaws, and each set of jaws is fixedly connected to the corresponding vertical frame.

[0016] Compared with the prior art, the present invention provides a rice bran and rice bran meal fermentation device with the following beneficial effects: In this device, rice bran or rice bran meal is placed on the filter plates in a filter bag, and the fermentation liquid is injected into the fermentation tank. The filter plates support the rice bran or rice bran meal, preventing excessive accumulation. The fermentation liquid enters each cavity and contacts the rice bran or rice bran meal evenly, improving the fermentation effect. After fermentation, the filter bag can be directly removed from the fermentation tank, and any remaining residue can be cleaned. Solid residue from the fermentation of rice bran or rice bran meal will not remain in the fermentation tank. Layered fermentation of rice bran or rice bran meal can be achieved without complex stirring structures, resulting in a simpler and more reasonable structure and greatly improving the cleanliness and convenience of the fermentation tank. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a top view schematic diagram of the structure of the present invention; Figure 3 This is the invention Figure 2 Schematic diagram of the cross-sectional structure at point AA; Figure 4 This is the invention Figure 2 Schematic diagram of the cross-sectional structure at point BB; Figure 5 This is the invention Figure 3 Schematic diagram of the cross-sectional structure at the CC section; Figure 6 This is the invention Figure 3A magnified schematic diagram of the structure at point D in the middle; Figure 7 This is a three-dimensional structural diagram showing the positional relationship between the loading / unloading mechanism and the fermentation tank of the present invention; The attached diagram shows the following components: 1. Mounting base; 2. Fermentation tank; 3. Filter bag; 4. Filter plate; 5. Through hole; 6. Cover; 7. Slide rod; 8. First lifting drive component; 9. Bushing; 10. Rotation drive component; 11. Support ring; 12. Ring opening; 13. Rod frame; 14. Liquid inlet pipe; 15. Feed channel; 16. Pressure relief valve; 17. Drain pipe; 18. Trolley; 19. Second lifting drive component; 20. Drive turntable; 21. Hinging arm; 22. Multi-jaw clamp; 23. Vertical frame; 24. Arc-shaped clamp; 25. Internal support frame. Detailed Implementation

[0018] To enable those skilled in the art to better understand the invention, the technical solutions in the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the invention.

[0019] As described in the background art, a rice bran fermentation device for feed processing uses a traditional fermentation tank to ferment rice bran or rice bran meal. When the rice bran or rice bran meal is fermented, it tends to accumulate and settle at the bottom of the fermentation tank, affecting the uniformity of contact between microorganisms in the fermentation liquid and the rice bran or rice bran meal, thus affecting the fermentation effect. Although the aforementioned device can achieve uniform mixing of bottom and top materials, its structure is complex. The residual solids after fermentation of rice bran or rice bran meal are concentrated at the bottom of the fermentation tank, making cleaning inconvenient.

[0020] To address this technical problem, the present invention provides a rice bran and rice bran meal fermentation apparatus, which is applied to the fermentation treatment of rice bran or rice bran meal to obtain protein from the fermentation broth.

[0021] For details, please refer to Figures 1-4A fermentation device for rice bran and rice bran meal includes: a mounting base 1 and a fermentation tank 2 mounted on the mounting base 1. The fermentation tank 2 is equipped with a layered material equalization mechanism, which includes filter bags 3 and multiple filter plates 4 evenly distributed from top to bottom within the filter bags 3. Adjacent filter plates 4 and filter bags 3 form a cavity for holding rice bran or rice bran meal. The filter plates 4 have multiple evenly distributed and vertically penetrating through holes 5. The top of the fermentation tank 2 has an opening, and a hinged cap 6 that fits the opening is mounted on the fermentation tank 2. The opening of the filter bags 3 is detachably mounted at the top opening of the fermentation tank 2. Filter screens can be installed at the through holes 5. The pore size of the filter screen can be appropriately selected according to the use of rice bran or rice bran meal as fermentation raw material. The pore size of the filter screen allows for solution passage and traps solids such as rice bran or rice bran meal. After fermentation, the filter bags 3 can be removed from the fermentation tank 2, and the solid residue from the fermentation of rice bran or rice bran meal will not remain in the fermentation tank 2.

[0022] The rice bran and rice bran meal fermentation device provided by this invention allows rice bran or rice bran meal to ferment independently in each cavity. The height of the rice bran or rice bran meal material should not exceed 10cm to prevent the rice bran or rice bran meal from piling up and hardening, which would affect the fermentation effect. The through holes and filter bags 3 allow the fermentation liquid to pass through, ensuring that the fermentation liquid flows and mixes with each cavity and inside and outside the filter bags 3. During the fermentation process, the filter bags 3 can be manually lifted up and down from the fermentation tank 2. In another embodiment, the filter bags 3 can be moved up and down in the fermentation tank 2 by an external lifting drive, so that the rice bran or rice bran meal material in each cavity and the fermentation liquid in the fermentation tank 2 can move relative to each other. During the up and down movement of the filter bags 3, the rice bran or rice bran meal material and the fermentation liquid can be mixed and contacted. The layered fermentation of rice bran or rice bran meal material can be achieved without complex stirring structures, and the structure is simpler and more reasonable, greatly improving the cleanliness and convenience of the fermentation tank 2.

[0023] It should be noted that, without conflict, the embodiments and features and technical solutions in the invention can be combined with each other.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] Example 1

[0027] Please refer to Figures 1-4 A fermentation device for rice bran and rice bran meal includes: a mounting base 1 and a fermentation tank 2 mounted on the mounting base 1. The fermentation tank 2 is equipped with a layered material equalization mechanism, which includes filter bags 3 and multiple filter plates 4 evenly distributed from top to bottom within the filter bags 3. Adjacent filter plates 4 and filter bags 3 form a cavity for holding rice bran or rice bran meal. The filter plates 4 have multiple evenly distributed and penetrating through holes 5. The top of the fermentation tank 2 has an opening, and a cover 6 is hinged to the fermentation tank 2 to fit the opening. The bag openings of the filter bags 3 are detachably installed at the top opening of the fermentation tank 2. Furthermore, multiple screws are hinged to the top of the fermentation tank 2, and locking nuts are screwed onto the screws. The cover 6 covers the top of the fermentation tank 2. After assembly, the filter bag 3 can be pressed between the cap 6 and the fermentation tank 2. The filter bag 3 can be a cloth bag, fiber bag, or other bag with plasticity and filtration effect. The filter bag 3 is provided with filter holes that allow the fermentation liquid to pass through and intercept rice bran or rice bran meal solids. The through holes 5 on the filter plate 4 only allow the fermentation liquid to pass through, and rice bran or rice bran meal particles cannot pass through the through holes 5. The height of rice bran or rice bran meal in the cavity does not exceed 1 / 2 of the cavity height. The fermentation tank 2 is provided with a transparent liquid level gauge that communicates with the inside of the fermentation tank 2 to observe the liquid level in the fermentation tank 2 in real time. The liquid level in the fermentation tank 2 should be higher than the second filter plate 14 from the top of the fermentation tank 2 to ensure that the rice bran or rice bran meal is completely wetted.

[0028] For details, please refer to Figure 1 as well as Figure 4 The fermenter 2 is equipped with an inlet pipe 14 at the top and a feed channel 15 on the cover 6. The outlet end of the feed channel 15 is located above the filter bag 3. After the cover 6 is closed with the fermenter 2, the outlet end of the inlet pipe 14 is connected to the feed end of the feed channel 15. Furthermore, sealing rings are provided at the opening of the fermenter 2 and the outlet port of the inlet pipe 14 to ensure the sealing performance of the cover 6, the opening, and the inlet pipe 14.

[0029] For details, please refer to Figure 1 and Figure 3The cover 6 is equipped with a pressure relief valve 16 that communicates with the feed channel 15. The bottom of the fermenter 2 is equipped with a drain pipe 17 that communicates with the bottom of the fermenter 2. Furthermore, the drain pipe 17 is equipped with necessary valves such as a switch valve and a sampling valve. The fermenter 2 is equipped with necessary components such as a temperature probe and a pH probe that extend into the fermenter 2. A pressure gauge is installed at the pressure relief valve 16. The pressure gauge is used to detect the internal pressure value of the fermenter 2.

[0030] Before fermentation of rice bran or rice bran meal, the cap 6 is sealed to the fermentation tank 2. The external fermentation liquid is injected through the inlet pipe 14 and enters the fermentation tank 2 through the feed channel 15, falling into the filter bag 3. The fermentation liquid then enters the fermentation tank 2 through the filter bag 3, ensuring that the fermentation liquid can evenly contact the rice bran or rice bran meal in each cavity during feeding. The fermentation liquid enters the fermentation tank 2 through the filter bag 3 until it covers the top of the rice bran or rice bran meal in the fermentation tank 2. Pressure gauges, temperature probes, and pH probes can monitor the necessary factors such as temperature and pH required for fermentation in real time. The fermentation tank 2 can be unloaded through the pressure relief valve 16. Heating elements can also be installed in the fermentation tank 2 to adjust the temperature inside the fermentation tank 2, which will not be elaborated further here. A sample of the fermentation liquid can be obtained by opening the sampling valve and tested through external testing equipment, which facilitates the operator's understanding of the fermentation situation in the fermentation tank 2. After fermentation is completed, the fermentation liquid is discharged from the drain pipe 17. The subsequent fermentation liquid can be used for the extraction of protein and other nutrients.

[0031] Example 2

[0032] The rice bran and rice bran meal fermentation apparatus provided in Example 1 has been further optimized. For details, please refer to [link / reference needed]. Figures 3-4 A sliding rod 7 is slidably installed at the bottom of the fermenter 2, and the top of the sliding rod 7 is connected to a set of filter plates 4 at the bottom of the fermenter 2. A first lifting drive component 8 is installed on the mounting base 1 to provide power for the sliding rod 7 to slide up and down. Further, the first lifting drive component 8 is preferably a telescopic cylinder, which is fixedly installed on the mounting base 1 with the extended end of the telescopic cylinder facing downward. The extended end of the telescopic cylinder is fixedly connected to the sliding rod 7 through a connecting plate. The first lifting drive component 8 can also be other equivalent components that drive the sliding rod 7 to slide up and down. Further, the top of the sliding rod 7 is fixedly connected to the corresponding filter plate 4 by bolts, and the top of the sliding rod 7 and the bottom of the filter plate 4 can also be threaded together.

[0033] For details, please refer to Figure 3 or Figure 4 There should be a gap of at least 10cm between the outer wall of filter bag 3 and the inner wall of fermenter 2.

[0034] For details, please refer to Figure 3A bushing 9 is rotatably mounted at the bottom of the fermenter 2. The bushing 9 has a sliding opening that allows the sliding rod 7 to slide up and down. A rotation drive 10, providing power for the rotation of the bushing 9, is mounted on the mounting base 1. Furthermore, the bushing 9 is rotatably sealed to the fermenter 2 via a mechanical shaft seal. A rubber ring seal or packing seal is provided inside the sliding opening. The sliding rod 7 is slidably sealed to the inner wall of the bushing 9 via the packing seal or rubber ring seal. The sliding opening can be polygonal, with the outer wall of the sliding rod 7 fitting into the inner wall of the sliding opening. Alternatively, multiple vertical sliding keys can be provided on the inner wall of the sliding opening, and a sliding groove fitting into the sliding key can be provided on the outer wall of the sliding rod 7. The key is slidably installed in the slide groove to realize the transmission between the bushing 9 and the slide rod 7; the rotation drive component 10 includes a motor and a transmission assembly. The motor is connected to the bushing 9 through the transmission assembly. The transmission assembly can be a transmission belt, chain or other transmission components with equivalent transmission effect. The motor is preferably a commonly used brake stepper motor. The brake stepper motor realizes forward or reverse rotation and fixed angle rotation through an external control system. The brake stepper motor can use existing technology. The structure and control principle of the brake stepper motor and the external control system will not be further limited or described here.

[0035] In the rice bran and rice bran meal fermentation device provided in this embodiment, the filter bag 3 is in a naturally hanging state during rice bran or rice bran meal fermentation. The rice bran or rice bran meal is located in each cavity. After a long period of accumulation, caking will occur, which is not conducive to the fermentation of rice bran or rice bran meal. The first lifting drive component 8 drives the slide rod 7 to move upward. The slide rod 7 pushes the lower set of filter plates 4 to move upward. During the upward movement of the filter plates 4, the rice bran or rice bran meal material in the upper part of the cavity slides to the sides and enters the edge of the filter bag 3. Under the action of gravity, the edge of the filter bag 3 hangs downward due to the entry of rice bran or rice bran meal. The lower set of filter plates 4 gradually... The filter plates 4 are moved upward and pushed upward synchronously, so that the filter material in the upper part of each cavity slides down from the edge of the filter plate 4 along with the filter bag 3. When the first lifting drive 8 drives the slide rod 7 to move downward, the rice bran or rice bran meal material hanging in the filter bag 3 at the four edges of the filter plate 4 moves upward as the filter bag 3 gradually expands and contracts and is pushed into the bottom of the cavity and gathers in the middle of the filter plate 4. This realizes the up-down and inside-out circulation of the material in the cavity, which disturbs the rice bran or rice bran meal material in the cavity and further improves the uniformity of contact between the rice bran or rice bran meal and the fermentation liquid, so as to improve the fermentation effect of the rice bran or rice bran meal.

[0036] The gap between the outer wall of the filter bag 3 and the fermentation tank 2 allows the filter bag 3 and the rice bran or rice bran meal material inside the filter bag 3 to slide downward naturally when the filter plate 4 moves upward, so as to ensure that the rice bran or rice bran meal material in the cavity can be smoothly circulated and "stirred".

[0037] When agitating the rice bran or rice bran meal material in the fermentation chamber, the first lifting drive 8 drives the slide rod 7 and the filter plate 4 to move up and down, while the rotating drive 10 drives the bushing 9 to rotate in both directions (the angle rotation of the filter plate 4 is controlled by a program set by an external control system. The rotation angle should ensure that all filter plates 4 in the fermentation tank 2, excluding the uppermost set of filter plates 4, rotate at least 180 degrees. During fermentation and agitation, the agitation angle of the filter plates 4 should not be too large to avoid excessive compression of the rice bran or rice bran meal). After being driven by the slide bar 7, the filter plate 4 rotates synchronously. When the filter plate 4 moves upward, the filter bag 3 naturally falls off the edge of the filter plate 4 and breaks free from the restraint on the rice bran or rice bran meal material. Under the action of centrifugal force, the rice bran or rice bran meal material scatters from the filter plate 4 to the surroundings. When the filter plate 4 moves downward, the filter bag 3 gradually relaxes and rotates synchronously with the filter plate 4. During the rotation of the filter bag 3 with the filter plate 4, the inner diameter of the filter bag 3 gradually decreases, forming a thrust that pulls the rice bran or rice bran meal material towards the center of the cavity. This can further improve the rice bran or rice bran meal material in the cavity. The mixing effect of the materials ensures that the rice bran or rice bran meal material is in full contact with the fermentation liquid. After fermentation is completed, the first lifting drive 8 drives the slide rod 7 to move upward, while the rotation drive 10 drives the slide rod 7 to rotate in one direction. The filter plate 4 in the lower part of the fermentation tank 2 moves to the upper part of the fermentation tank 2. As the filter bag 3 rotates with the filter plate 4, it is gradually twisted and the inner diameter gradually decreases, which creates a squeezing effect on the residual solid residue in the cavity after fermentation. During the squeezing process, the residual fermentation liquid in the solid residue is gradually squeezed out, and the solid residue is left in the filter bag 3. In this way, the fermentation liquid in the solid residue is squeezed and filtered out, eliminating the need for secondary treatment of the solid residue. By using the filter bag 3, filter plate 4, first lifting drive 8 and rotation drive 10, the rice bran or rice bran meal material is spaced out, stirred and mixed during fermentation, and the solid residue and liquid material are separated after fermentation. The structure is simple, which greatly saves the equipment investment cost and improves the fermentation treatment effect and efficiency of rice bran or rice bran meal.

[0038] Example 3

[0039] The rice bran and rice bran meal fermentation apparatus provided in Example 2 has been further optimized. For details, please refer to [link / reference needed]. Figure 3 as well as Figure 6 A rod frame 13 is fixedly installed on the top of the filter plate 4. Furthermore, a set of rod frames 13 on the upper part of the fermentation tank 2 is lower than the top of the filter plate 4. The rod frames 13 on multiple filter plates 4 in the fermentation tank 2 are 10-30cm higher than the filter plate 4. This can be appropriately adjusted according to the model and size of the fermentation tank 2 and the filter bag 3, as well as the height of the rice bran or rice bran meal material in the cavity.

[0040] For details, please refer to Figure 3 or Figure 4The outer diameter of the filter plate 4 and the support ring 11 gradually decreases from top to bottom, and the inner diameter of the filter bag 3 gradually decreases from top to bottom, following the outer diameter of the support ring 11. The support ring 11 is provided with an annular opening 12 that allows the lower filter plate 4 to pass through. Furthermore, the outer diameter of the lower set of filter plates 4 is smaller than the inner diameter of the annular opening 12 on the upper adjacent set of support rings 11.

[0041] For details, please refer to Figure 6 The filter bag 3 has multiple evenly spaced support rings 11 arranged from top to bottom, and the filter plate 4 is detachably installed on the support rings 11. Furthermore, the outer wall of the filter plate 4 has external threads, and the inner wall of the support ring 11 has internal threads. The filter plate 4 is screwed into the support ring 11. The filter plate 4 can also be detachably connected to the support ring 11 by bolts or the like. The top opening of the fermenter 2 has an annular groove, and the upper set of support rings 11 is placed in the annular groove. It should be noted that during the solid residue squeezing and dehydration process, the filter plate 4 is tightened with the support ring 11 as it rotates with the slide rod 7. In another embodiment, the top of the slide rod 7 can also be detachably connected to the bottom set of support rings 11 in the fermenter 2 by bolts or the like to prevent the lower set of filter plates 4 from gradually disengaging from the support rings 11 during rotation.

[0042] In the rice bran and rice bran meal fermentation device provided in this embodiment, during the rotation of the filter plate 4, the rods 13 on each filter plate 4 can stir the rice bran or rice bran meal material in the corresponding cavity after being driven by the filter bag 3, further improving the mixing uniformity between the rice bran or rice bran meal and the fermentation liquid; during the fermentation process of rice bran or rice bran meal, when the filter plate 4 rises, the rods 13 can limit the distance between two adjacent filter plates 4, preventing the rice bran or rice bran meal material between the two filter plates 4 from being excessively squeezed and then caking; when feeding rice bran or rice bran meal into the cavity or cleaning the solid residue in the cavity, the filter plate 4 can be removed from the support ring 11 by rotating the filter plate 4, and the rods 13 can serve as the force point when the filter plate 4 rotates, making it convenient for the operator to disassemble and assemble the filter plate 4 and the support ring 11; and the ring diameter of the ring opening 12 of the support ring 11 gradually decreases from top to bottom, which facilitates the lower filter plate 4 to pass through the ring opening 12.

[0043] Meanwhile, the rod 13 can serve as a leverage point for disassembling and assembling the filter plate 4, so that operators can disassemble and assemble the filter plate 4 from the support ring 11, thereby improving the ease of disassembling and assembling the filter plate 4.

[0044] Example 4

[0045] The rice bran and rice bran meal fermentation apparatus provided in Example 4 has been further optimized. For details, please refer to [link / reference needed]. Figure 7It also includes a loading and unloading mechanism for loading and unloading filter bags 3 into fermentation tank 2. The loading and unloading mechanism includes a trolley 18, a second lifting drive 19 mounted on the trolley 18, a drive turntable 20 mounted on the second lifting drive 19, a lifting arm 21 mounted on the drive turntable 20, and a multi-jaw clamp 22 mounted on the lifting arm 21. The clamping end of the multi-jaw clamp 22 is equipped with a vertical frame 23, and the bottom of the vertical frame 23 is equipped with an arc-shaped clamping block 24. The arc-shaped clamping blocks 24 on the multiple vertical frames 23 form a ring that fits the outer diameter of the support ring 11. An inner support frame 25 is mounted on the trolley 18. Furthermore, the height of the vertical frame 23 is higher than the height of the filter bag 3, and the inner support frame 25 fits inside the filter bag 3. The inner support frame 25 is welded from multiple rods and is located directly below the annular trajectory of the multi-jaw clamp 22 rotating around the center of the drive turntable 20. The second lifting drive component 19 is preferably a telescopic mast, but other equivalent components such as a telescopic cylinder that can drive the drive turntable 20 to move up and down can also be used. The drive turntable 20 is preferably an electric turntable, but a hydraulic or pneumatic turntable can also be used. The top corner of the inner support frame 25 is chamfered to avoid scratching or damaging the filter bag 3. An adjusting shaft is rotatably mounted on the trolley 18. Rollers are mounted at the bottom of the adjusting shaft, and a push-pull handle is mounted at the top of the adjusting shaft. Force can be applied to the trolley 18 by pushing and pulling the handle, which can drive the adjusting shaft to rotate and move the rollers. The direction is adjusted to adapt the travel direction of the trolley 18; the arc-shaped clamp 24 and the corresponding support ring 11 contact end need to be provided with an anti-slip layer, which can be a rubber layer with anti-slip texture, or other anti-slip textures; the multi-jaw clamp 22 has at least 3 sets of jaws, and the multiple sets of jaws 22 are fixedly connected to the corresponding vertical frame 23; more specifically, when feeding the filter bag 3, the inner support frame 25 and the fermentation tank 2 are located on both sides of the second lifting drive component 19. After the drive turntable 20 drives the lifting arm 21 to rotate 180 degrees, the filter bag 3 is located on the upper part of the inner support frame 25. There is at least a 5cm gap between the bottom of the filter bag 3 and the top of the inner support frame 25 to avoid the inner support frame 25 interfering with the movement of the filter bag 3 and to ensure that the filter bag 3 moves smoothly to the top of the inner support frame 25.

[0046] In the rice bran and rice bran meal fermentation device provided in this embodiment, when it is necessary to discharge the solid residue of rice bran or rice bran meal inside the filter bag 3, the support ring 11 is detached from the fermentation tank 2. The upper set of support rings 11 is located between the arc-shaped clamps 24. The multi-jaw clamp 22 is activated, and after being driven by the vertical frame 23, the arc-shaped clamps 24 clamp the corresponding support rings 11. The second lifting drive component 19 drives the turntable to move up until the bottom of the filter bag 3 is completely removed from the fermentation tank 2. The drive turntable 20 drives the lifting arm 21 to rotate until... The filter bag 3 is located directly above the inner support frame 25. Pushing the trolley 18 to the rice bran or rice bran meal feeding position causes the second lifting drive 19 to move the drive turntable 20 downwards. The bottom of the filter bag 3 contacts the top of the inner support frame 25. The inner support frame 25 pushes the bottom of the filter bag 3 upwards from within the filter bag 3, gradually removing the filter plate 4 on the support ring 11 from top to bottom. As the bottom of the filter bag 3 moves upwards, it flips over from the inside out, automatically removing the solid residue from the fermented rice bran or rice bran meal inside the filter bag 3. Unloading reduces manual operation and improves the cleaning efficiency of the remaining solid material in the filter bag 3. In another embodiment, an adjustment and lifting drive is fixedly installed at the end of the lifting arm 21, and a multi-jaw clamp 22 is installed on the adjustment and lifting drive. The adjustment and lifting drive is used to drive the multi-jaw clamp 22 to adjust its position up and down. Compared with the telescopic mast, the adjustment and lifting drive can more conveniently clamp a set of support rings 11 on the top of the filter bag 3 by driving the multi-jaw clamp 22. The trolley 18 has a cleaning port located at the lower part of the inner support frame 25 to prevent the solid residue cleaned from the filter bag 3 from falling onto the trolley 18. There should be at least a 10cm gap between the bottom of the trolley 18 and the ground so that the trolley 18 can be moved away smoothly from the solid residue after unloading. Similarly, the second lifting drive 19 is used to drive the filter bag 3 to move upward step by step to add rice bran or rice bran meal into the corresponding cavity. The loading and unloading mechanism can also be used to feed the filter bag 3 containing rice bran or rice bran meal into the fermentation tank 2. Further details are not provided here.

[0047] The rice bran and rice bran meal fermentation device provided by this invention is used as follows: Each filter plate 4 is installed layer by layer at the support ring 11 on the filter bag 3. Rice bran or rice bran meal is gradually placed into each cavity from bottom to top in the filter bag 3. The height of the rice bran or rice bran meal material is less than 1 / 2 of the cavity height. The filter bag 3 is placed into the fermentation tank 2. The bottom set of filter plates 4 is fixedly connected to the top of the slide rod 7. The upper set of support rings 11 is inserted into the annular groove at the top of the fermentation tank 2. The cover 6 is sealed and closed at the fermentation tank 2. The external fermentation liquid is injected into the filter bag 3 through the liquid inlet pipe 14 and the feed channel 15. The fermentation liquid seeps into the fermentation tank 2 through the filter bag 3, and the fermentation liquid completely soaks all the rice bran or rice bran meal. The rice bran or rice bran meal ferments. During the fermentation process, the first lifting drive 8 drives the slide rod 7 to move upward, and at the same time, the rotating drive 10 drives the bottom filter plate 4 to rotate back and forth. The rice bran or rice bran meal in each cavity is filtered by the filter plate 4. During the upward movement and rotation, the fermentation liquid is "stirred". After fermentation, the fermentation liquid is discharged by opening the valve at the drain pipe 17. The first lifting drive 8 drives the slide bar 7 to move upward gradually, while the rotating drive 10 drives the bushing 9 to rotate in one direction. The distance between the filter plates 4 decreases, and the diameter of the filter bag 3 gradually decreases during the twisting process. Under the pressure of the squeezing force, the residual fermentation liquid in the rice bran or rice bran meal is squeezed out, and the filter bag 3 is removed from the fermentation tank 2. The filter bag 3 is unloaded by the loading and unloading mechanism. The trolley 18 is pushed to the required unloading position, and the residual solid residue in the filter bag 3 is moved to the waste pile for unloading (the specific principle is referred to in the above embodiment 4, which will not be described in detail here). After cleaning the solid residue, rice bran or rice bran meal is refilled into the filter bag 3, and the next round of fermentation can be carried out.

[0048] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A fermentation apparatus for rice bran and rice bran meal, characterized in that, The fermentation tank (2) includes a mounting base (1) and a fermentation tank (2) mounted on the mounting base (1). The fermentation tank (2) is equipped with a layered material equalization mechanism. The layered material equalization mechanism includes a filter bag (3) and multiple filter plates (4) evenly distributed from top to bottom in the filter bag (3). The upper and lower adjacent filter plates (4) and the filter bag (3) form a cavity. The cavity is used to hold rice bran or rice bran meal. The filter plate (4) is provided with multiple evenly distributed and vertically penetrating through holes (5). The top of the fermentation tank (2) is provided with an opening. The fermentation tank (2) is hinged with a cover (6) that fits the opening. The bag mouth of the filter bag (3) is detachably installed at the top opening of the fermentation tank (2).

2. The rice bran and rice bran meal fermentation apparatus according to claim 1, characterized in that, The bottom of the fermentation tank (2) is equipped with a sliding rod (7) that slides up and down. The top of the sliding rod (7) is connected to a set of filter plates (4) at the bottom of the fermentation tank (2). The mounting base (1) is equipped with a first lifting drive component (8) that provides power for the sliding rod (7) to slide up and down.

3. The rice bran and rice bran meal fermentation apparatus according to claim 2, characterized in that, The fermenter (2) is rotatably mounted with a bushing (9) at the bottom. The bushing (9) is provided with a sliding opening that allows the slide rod (7) to slide up and down. The mounting base (1) is equipped with a rotation drive (10) that provides power for the rotation of the bushing (9).

4. The rice bran and rice bran meal fermentation apparatus according to claim 1 or 3, characterized in that, The filter bag (3) has multiple equally spaced support rings (11) arranged from top to bottom, and the filter plate (4) can be detachably installed on the support rings (11).

5. The rice bran and rice bran meal fermentation apparatus according to claim 4, characterized in that, The outer diameter of the filter plate (4) and the support ring (11) gradually decreases from top to bottom, and the inner diameter of the filter bag (3) gradually decreases from top to bottom following the outer diameter of the support ring (11). The support ring (11) is provided with an annular opening (12) that allows the lower filter plate (4) to pass through.

6. The rice bran and rice bran meal fermentation apparatus according to claim 5, characterized in that, A rod frame (13) is fixedly installed on the top of the filter plate (4).

7. The rice bran and rice bran meal fermentation apparatus according to claim 1, characterized in that, The fermenter (2) is provided with an inlet pipe (14) at the top and a feed channel (15) on the cover (6). The outlet end of the feed channel (15) is located above the filter bag (3). After the cover (6) is closed with the fermenter (2), the outlet end of the inlet pipe (14) is connected to the feed end of the feed channel (15).

8. The rice bran and rice bran meal fermentation apparatus according to claim 2, characterized in that, There is a gap of at least 10cm between the outer wall of the filter bag (3) and the inner wall of the fermenter (2).

9. The rice bran and rice bran meal fermentation apparatus according to claim 7, characterized in that, The cover (6) is equipped with a pressure relief valve (16) that communicates with the feed channel (15), and the bottom of the fermentation tank (2) is provided with a drain pipe (17) that communicates with the bottom of the fermentation tank (2).

10. The rice bran and rice bran meal fermentation apparatus according to claim 4, characterized in that, It also includes a loading and unloading mechanism, which is used to load and unload filter bags (3) into fermentation tank (2). The loading and unloading mechanism includes a trolley (18), a second lifting drive (19) mounted on the trolley (18), a drive turntable (20) mounted on the second lifting drive (19), a lifting arm (21) mounted on the drive turntable (20), and a multi-jaw clamp (22) mounted on the lifting arm (21). The clamping end of the multi-jaw clamp (22) is equipped with a vertical frame (23). The bottom of the vertical frame (23) is equipped with an arc-shaped clamping block (24). The arc-shaped clamping blocks (24) on the multiple vertical frames (23) form a ring that fits the outer diameter of the support ring (11). The trolley (18) is equipped with an inner support frame (25).

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