Food enzyme fermentation residue removing equipment

Abstract

The invention relates to the technical field of food enzyme fermentation, in particular to food enzyme fermentation residue removing equipment which comprises a tank body, a feeding opening is formed in the top of the tank body, a sealing cover is arranged on the feeding opening, a liquid outlet is formed in the bottom of the tank body, a driving shaft is arranged at the axis position in the tank body, a driving assembly is arranged at the top of the tank body, and the driving assembly is in signal connection with a controller. The outer side of the driving shaft is vertically and slidably connected with a stirring assembly; the bottom of the stirring assembly is fixedly connected with a removing assembly; a threaded cylinder is arranged between the driving shaft and the stirring assembly, a reciprocating threaded groove is formed in the threaded cylinder, the stirring assembly is slidably connected into the reciprocating threaded groove, and a collecting assembly is arranged on the inner wall of the tank body and is in signal connection with the controller. The reciprocating motion displacement of the filter residue removing mechanism is designed, and the height adjustment of the displacement is configured, so that the separation of fermentation residues and fermentation liquor can be completed without uncovering, the pollution problem caused by uncovering and residue taking of traditional equipment is solved, the stirring and mixing efficiency is optimized, and the filter residue generation rate is reduced.

Description

Technical Field

[0001] This invention relates to the field of food enzyme fermentation technology, specifically to a food enzyme fermentation residue removal device. Background Technology

[0002] Food enzymes are biocatalysts used in food processing, usually obtained through microbial fermentation, plant and animal extraction, etc. (mainly produced by microbial fermentation).

[0003] Regarding the fermentation preparation of food enzymes, taking the existing GUE series enzyme reaction fermenters as an example, it includes a stainless steel tank or a glass tank. The tank is equipped with a jacketed temperature control system, a stirring system, a sterile mechanical sealing system, and a ventilation system. The stirring system adopts a top-entry mechanical stirrer (equipped with Pt-max type blades). This product supports biological reactions, fermentation, and enzyme conversion. It is suitable for process experiments and large-scale production in the field of food science and technology. It can be used for the development of food enzyme reaction processes, and can monitor fermentation parameters online to optimize enzymatic hydrolysis efficiency and meet pilot-scale requirements.

[0004] Based on food enzyme fermentation technology, after fermentation, enzyme preparations are separated through enzyme extraction and purification steps. The remaining culture medium residue, incompletely utilized raw materials, and microbial cells constitute the fermentation residue, which typically requires filtration or separation to ensure it does not remain in food. Chinese patent publication CN221810371U discloses a food enzyme fermentation residue removal device, including a support and a tank mounted on the support. The tank contains a stirring device with a scraping device, and a filter is movably installed at the bottom of the tank. The scraping device improves the mixing degree before fermentation, and the filter removes the fermentation residue after fermentation, saving time and labor and improving work efficiency.

[0005] In practical applications, it is necessary to open the lid to filter and remove the fermentation residue. However, the fermentation process of food enzymes usually requires maintaining a sealed fermentation environment. The step of opening the lid to remove the residue inevitably leads to contamination of the internal fermentation process. Therefore, it is necessary to propose a food enzyme fermentation residue removal device that can filter out the fermentation residue while maintaining a sealed fermentation environment, thereby improving the quality of fermented food enzymes. Summary of the Invention

[0006] To address the aforementioned issues, this invention provides a food enzyme fermentation residue removal device. By designing the reciprocating motion displacement of the residue removal mechanism and configuring the height adjustment of this displacement, the residue and fermentation liquid can be separated without opening the lid. This solves the pollution problem caused by opening the lid to remove residue in traditional equipment, optimizes the stirring and mixing efficiency, and reduces the residue generation rate.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows: a food enzyme fermentation residue removal device includes a tank, a feeding port is provided at the top of the tank and a sealing cover is provided on the feeding port, a liquid outlet is provided at the bottom of the tank, a drive shaft is provided at the center of the tank and penetrates the top wall of the tank, a drive assembly for driving the drive shaft to rotate is provided at the top of the tank, the drive assembly is signal-connected to a controller, a stirring assembly for stirring and mixing raw materials and microbial cells is vertically slidably connected to the outside of the drive shaft, and a removal assembly for screening out fermentation residue is fixedly connected to the bottom of the stirring assembly; A threaded cylinder is fixedly connected to the top wall of the tank between the drive shaft and the stirring assembly. The threaded cylinder has a reciprocating thread groove. The stirring assembly is slidably connected in the reciprocating thread groove. The inner wall of the tank is equipped with a data acquisition component for detecting the height information of the cleaning component. The data acquisition component is connected to the controller signal. The controller adjusts the rotation drive power and drive time of the drive assembly. Combined with the height information collected by the data acquisition component, the height of the cleaning component is adjusted to separate the fermented residue and fermentation liquid.

[0008] The technical principle of the above solution is as follows: This solution drives the drive shaft at the center of the tank to rotate through the drive component. The drive shaft cooperates with the stirring component that is slidably connected to the outside. Combined with the threaded cylinder structure with reciprocating threaded grooves fixed between the drive shaft and the stirring component, the stirring component moves up and down along the reciprocating threaded grooves during rotation, thereby driving the cleaning component at the bottom to move synchronously. At the same time, the height information of the cleaning component is detected in real time by the acquisition component and fed back to the controller. The controller dynamically controls the height of the cleaning component by adjusting the rotation power and time of the drive component, and finally realizes the dynamic separation of fermentation residue and fermentation liquid during the fermentation process.

[0009] The above approach has the following beneficial effects: 1. This solution integrates the stirring function of the stirring component and the displacement adjustment function of the cleaning component into the same sealed tank, solving the contamination problem caused by the need to open the lid to remove the fermentation residue in traditional equipment. It avoids external contamination introduced during material transfer due to opening the lid, ensures the airtightness of the fermentation environment, and improves the quality of food enzymes.

[0010] 2. This solution enhances the uniformity of mixing between raw materials and microbial cells through the compound motion of the stirring components, improving the problems of uneven mixing and low screening efficiency. The increased uniformity of the mixing rate reduces the generation of filter residue, while the dynamic screening action of the cleaning components prevents fermentation residue from accumulating and clogging the screen, thereby improving the efficiency of solid-liquid separation.

[0011] 3. This solution achieves precise control of the height of the clearing component by coordinating the adjustment of the acquisition components and the controller, optimizes the automation control capability, adapts to the process requirements of different fermentation stages, and reduces human intervention errors.

[0012] Furthermore, the stirring assembly includes a rotating sleeve sleeved on the outside of the drive shaft, the drive shaft and the rotating sleeve being vertically slidably connected, and a spiral stirring blade being fixedly connected to the rotating sleeve.

[0013] Beneficial effects: The drive shaft is vertically slidably connected to the rotating sleeve. When the drive shaft rotates, it drives the rotating sleeve to rotate synchronously. The fixed spiral stirring blades on it generate axial and radial composite flow through the spiral structure, mixing raw materials and microbial cells. Through the superposition of axial and radial flow, the mixing uniformity of raw materials and microbial cells is improved, and the mixing blind zone is reduced.

[0014] Furthermore, the external thread radius of the spiral impeller is equal to the inner diameter of the tank, and the outer edge of the spiral impeller can fit against the inner wall of the tank.

[0015] Beneficial effects: The outer thread radius of the spiral ribbon is equal to the inner diameter of the tank. Its outer edge is designed to fit the inner wall of the tank. When rotating, it covers the entire inner wall area. When the spiral ribbon rotates, it can scrape off the material attached to the inner wall of the tank, preventing the attached material from falling off and mixing into the fermentation liquid during the static fermentation stage, thus becoming fermentation residue and interfering with the fermentation process.

[0016] Furthermore, the cleaning component includes a screen, and symmetrical connecting pieces are provided between the screen and the rotating sleeve. The two ends of the connecting pieces are fixedly connected to the screen and the rotating sleeve, respectively.

[0017] Beneficial effects: The combined rotation and vertical displacement of the rotating sleeve drives the screen to move synchronously, forming dynamic screening. This design integrates stirring and filtration functions into the same tank, avoiding the cumbersome steps of transferring materials to separate filtration equipment and reducing the risk of contamination.

[0018] Furthermore, the drive assembly includes a drive box fixedly connected to the top of the tank, a servo motor fixedly connected inside the drive box, and the output shaft of the servo motor being coaxially and fixedly connected to the top of the drive shaft.

[0019] Beneficial effects: The use of a servo motor enables precise control of the drive shaft's speed and direction, meeting the power requirements for subsequent dynamic adjustment of the screen height and the adjustment of the stirring intensity.

[0020] Furthermore, the data acquisition component includes a displacement sensor fixedly connected to the inner side wall of the tank, which is used to acquire the height difference between the screen and the bottom wall of the tank.

[0021] Beneficial effects: The controller precisely adjusts the operating parameters of the drive components based on feedback information, ensuring that the height of the cleaning components matches the needs of the fermentation stage and optimizing the screening effect.

[0022] Furthermore, an electromagnetic valve is fixedly connected to the liquid outlet, and the electromagnetic valve is connected to the controller signal.

[0023] Beneficial effects: The electromagnetic valve is connected to the controller, which dynamically adjusts the valve opening and closing status according to process parameters such as fermentation time and temperature threshold, so as to achieve precise timing and flow control of fermentation broth discharge, avoid broth discharge deviation or pollution caused by manual operation, and improve the level of production automation.

[0024] Furthermore, the upper part of the tank is a cylindrical structure, and the bottom of the tank is a conical structure, with the shape of the screen matching the conical shape of the bottom of the inner wall of the tank.

[0025] Beneficial effects: The bottom of the tank is designed with a conical structure, which guides the fermented residue to settle towards the center along the inner wall of the cone; the shape of the screen fits the inner wall of the cone, and it stays in contact with the inner wall during dynamic displacement, reducing the deposition of fermented residue at the edge and simplifying the cleaning and maintenance process.

[0026] Furthermore, the height of the screen is equal to the height of the conical bottom of the tank.

[0027] Beneficial effects: The screen height is equal to the height of the conical bottom of the tank, and its vertical coverage completely overlaps with the natural settling path of the fermentation residue. This design ensures that the fermentation residue is intercepted and screened by the screen during the settling process, avoiding the appearance of unscreened settling zones due to insufficient screen height, and improving the thoroughness of residue removal and separation.

[0028] Furthermore, wear-resistant plates are fixedly connected to the outer edge of the spiral ribbon of the spiral agitator blade.

[0029] Beneficial effects: The wear-resistant pad design reduces direct friction loss between the screw ribbon and the inner wall, maintains the fit between the screw ribbon and the inner wall, extends the service life of the screw ribbon, and reduces the frequency of equipment maintenance.

[0030] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the food enzyme fermentation residue removal device of the present invention; Figure 2 This is an isometric sectional view of the tank body in an embodiment of the food enzyme fermentation residue removal equipment of the present invention; Figure 3 This is an isometric view of the connection between the rotating sleeve and the screw stirring blade in an embodiment of the food enzyme fermentation residue removal device of the present invention. Figure 4 This is a schematic diagram of the connection of the threaded cylinder in an embodiment of the food enzyme fermentation residue removal device of the present invention.

[0032] The reference numerals in the accompanying drawings of the instruction manual include: 1. Tank body; 2. Feeding port; 3. Sealing cover; 4. Liquid outlet; 5. Drive shaft; 6. Drive assembly; 601. Drive box; 602. Servo motor; 7. Rotating sleeve; 8. Limiting rod; 9. Limiting groove; 10. Spiral stirring blade; 101. Spiral ribbon; 102. Stirring connecting rod; 103. Connecting plate; 11. Wear-resistant plate; 12. Screen; 13. Threaded cylinder; 14. Reciprocating threaded groove; 15. Tank block. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. 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.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] The following detailed description illustrates the specific implementation method: Example 1:

[0037] This embodiment provides a food enzyme fermentation residue removal device, specifically as follows: Figure 1 As shown, the tank includes a cylindrical tank 1, with a feeding port 2 at the top for feeding raw materials and microbial cells. A sealing cap 3 is detachably connected to the top of the feeding port 2 to ensure a sealed fermentation environment. The tank 1 also has an outlet 4 at the bottom for releasing the food enzyme fermentation liquid after fermentation.

[0038] Combination Figure 1 and Figure 2 As shown, a drive shaft 5 is provided at the center of the tank body 1, penetrating the top wall of the tank body 1. A drive assembly 6 for driving the drive shaft 5 to rotate is provided at the top of the tank body 1. The drive assembly 6 includes a drive box 601 welded and fixed to the top of the tank body 1. A servo motor 602 is fixedly connected to the drive box 601 by bolts. The servo motor 602 is signal connected to a controller. The output shaft of the servo motor 602 is coaxially fixedly connected to the top of the drive shaft 5 by a coupling.

[0039] The outer side of the drive shaft 5 is equipped with a stirring component for mixing raw materials and microbial cells, combined with Figure 2 and Figure 3 As shown, the stirring assembly includes a rotating sleeve 7 sleeved on the outside of the drive shaft 5. Symmetrical limiting rods 8 are welded and fixed to the outer wall of the drive shaft 5. Vertical limiting grooves 9 are opened on the inner wall of the rotating sleeve 7 at the positions corresponding to the limiting rods 8. A spiral stirring blade 10 is fixedly connected to the rotating sleeve 7. The spiral stirring blade 10 includes symmetrical spiral ribbons 101 and several stirring connecting rods 102. The two ends of the several stirring connecting rods 102 are respectively fused and fixed to the outer wall of the rotating sleeve 7 and the corresponding spiral ribbons 101. When the servo motor 602 is started, the drive shaft 5 starts to rotate under the drive of the servo motor 602. Since the limiting rods 8 on the outer wall of the drive shaft 5 cooperate with the vertical limiting grooves 9 on the inner wall of the rotating sleeve 7, the rotating sleeve 7 will rotate synchronously with the drive shaft 5. At this time, the spiral stirring blades 10 fixed to the outer wall of the rotating sleeve 7 rotate accordingly. The spiral structure of the spiral ribbon 101 generates axial thrust during rotation, pushing the raw materials and microbial cells to flow axially (up and down) along the tank body 1. Simultaneously, the symmetrically arranged spiral ribbons 101 and the stirring connecting rod 102 form a spatial network structure, generating shear force in the radial (horizontal) direction, dispersing the aggregated material clumps. This combined effect of axial and radial flow allows for continuous exchange and mixing of materials at different locations (such as the top and bottom, center and edge) within the tank body 1, thereby achieving uniform dispersion of the raw materials and microbial cells.

[0040] Compared to conventional multi-blade agitators, the synergistic mixing method of the spiral ribbon 101 and the stirring connecting rod 102 is more suitable for the requirement in food enzyme fermentation that 'the mixing intensity needs to be dynamically adapted to the material characteristics'. The spiral ribbon 101's structural design can automatically adjust the shear force according to the viscosity of the raw material. For high-viscosity materials (such as culture media containing starch or colloids), the large contact area and gradual advancement of the ribbon 101 provide gentle and continuous shear, avoiding cell damage caused by vigorous mixing. For low-viscosity materials (such as liquid culture media), the spiral trajectory of the ribbon 101 enhances axial convection, preventing solid particle sedimentation. This characteristic effectively reduces problems such as solid particle agglomeration, raw material clumping, or localized cell enrichment caused by insufficient shear force, and reduces the formation of mixing blind zones.

[0041] In particular, such as Figure 2As shown, based on the helical structure of the ribbon 101, this embodiment designs the external thread radius of the ribbon 101 to be equal to the inner diameter of the tank 1 (the external thread radius of the ribbon 101 perfectly matches the inner diameter of the tank 1), allowing the outer edge of the ribbon 101 to fit snugly against the inner wall of the tank 1. When the servo motor 602 drives the drive shaft 5 to rotate the ribbon 101, its helical motion trajectory can fully cover the entire mixing and stirring area of ​​the inner wall of the tank 1. This design, while achieving the effect of mixing raw materials and microbial cells, addresses the problem of raw materials and microbial cells easily adhering to the inner wall of the tank 1. The snug fit design of the ribbon 101 allows it to simultaneously scrape off the material adhering to the inner wall during rotation, effectively preventing the adhering material from falling off the inner wall and mixing into the fermentation liquid during the static fermentation stage, thus avoiding it becoming fermentation residue and interfering with the fermentation process.

[0042] Because the screw ribbon 101 needs to continuously rub against the inner wall of the tank 1 during long-term stirring, the outer edge of the screw ribbon 101 is prone to wear, which reduces its adhesion to the inner wall and thus affects the uniformity of stirring and the scraping effect. Therefore, specifically as follows Figure 3 As shown, in this embodiment, wear-resistant plates 11 are welded to the outer edge of the screw ribbon 101. These wear-resistant plates 11 are typically made of high-hardness, corrosion-resistant materials (such as stainless steel alloys or ceramic composites). Their smooth surface and low coefficient of friction reduce direct frictional wear between the screw ribbon 101 and the inner wall, while maintaining a tight fit between the outer edge of the screw ribbon 101 and the inner wall. This design ensures that the stirring mechanism maintains the screw ribbon 101's efficient scraping ability against the inner wall even after long-term operation, preventing increased fermentation residue due to screw ribbon 101 wear, extending the service life of the screw ribbon 101, and reducing equipment maintenance frequency.

[0043] The bottom of the rotating sleeve 7 is equipped with a cleaning component for screening out fermentation residue. This component includes a screen 12, with symmetrical connecting pieces 103 between the screen 12 and the rotating sleeve 7. The two ends of the connecting pieces 103 are welded to the screen 12 and the rotating sleeve 7, respectively. This design enables precise solid-liquid separation of fermentation residue and fermentation liquid during the static fermentation stage of food enzymes. Integrating raw material mixing and residue filtration into the same tank 1 avoids the cumbersome steps of transferring materials to separate filtration equipment in traditional processes, simplifying the fermentation operation and reducing the risk of contamination that may be introduced by opening the lid and transferring materials.

[0044] The special feature is that a gap is provided between the outer wall of the drive shaft 5 and the inner wall of the rotating sleeve 7, which allows for proper connection. Figure 2 , Figure 3 and Figure 4As shown, a threaded cylinder 13, welded to the inner top wall of the tank 1, is provided in the gap. A reciprocating threaded groove 14 is provided on the threaded cylinder 13. A slotted block 15 located in the reciprocating threaded groove 14 is rotatably connected to the inner wall of the rotating sleeve 7. When the servo motor 602 drives the drive shaft 5 to rotate, the rotating sleeve 7 rotates synchronously under the cooperation of the limit rod 8 of the drive shaft 5 and the limit slide groove 9 of the rotating sleeve 7. At this time, the slotted block 15 slides along the reciprocating threaded groove 14. Combined with the vertical sliding connection characteristics of the rotating sleeve 7 and the drive shaft 5, a composite motion trajectory of the rotating sleeve 7 rotating and reciprocating up and down displacement is finally formed.

[0045] This composite motion method has dual technical advantages: First, during the mixing stage, the rotation of the rotating sleeve 7 generates radial shearing and circumferential mixing through the spiral stirring blades 10, while the up-and-down reciprocating motion pushes the material to flow along the axial direction (up-down direction) of the tank 1. The two motions superimpose to form a three-dimensional mixing effect, which significantly improves the mixing uniformity of raw materials and microbial cells and reduces the mixing blind spots caused by single rotation. Second, during the stage of scraping off the inner wall deposits, compared with the limitation of traditional stirring components that only cover the inner wall at a fixed height by rotation, the up-and-down reciprocating motion of the rotating sleeve 7 can make the outer edge of the spiral ribbon 101 move cyclically along the height direction of the inner wall while rotating, forming a synergistic effect of spiral scraping and longitudinal pushing, which gradually pushes the material attached to the inner wall at different heights to the bottom of the tank 1 for concentrated accumulation, greatly improving the removal efficiency of the inner wall deposits.

[0046] Based on this up-and-down reciprocating displacement mechanism, this embodiment designs a data acquisition component inside the tank 1 for detecting the height information of the screen 12. The data acquisition component includes a displacement sensor fixedly connected to the inner wall of the tank 1. The displacement sensor is used to collect the height difference between the screen 12 and the inner bottom wall of the tank 1. The displacement sensor is connected to the controller signal. During the filter residue removal stage, the displacement sensor transmits the height difference data between the screen 12 and the inner bottom wall of the tank 1 to the controller in real time. Based on the preset fermentation process curve (such as the initial screening height, target screening height, and slag discharge lifting height), combined with the speed, direction, and running time parameters of the servo motor 602, the controller accurately calculates and outputs control commands: when it is necessary to start the screening process... During operation, the controller adjusts the rotation speed of the servo motor 602 based on the difference between the current height of the screen 12 and the target screening height. If the height of the screen 12 is higher than the target value, the motor accelerates and rotates in the forward direction, driving the rotating sleeve 7 to move downward through the reciprocating thread groove 14 of the threaded cylinder 13 until the screen 12 is lowered to the screening position that fits against the bottom of the cone. If it is necessary to raise the screen 12 to remove the intercepted fermented residue, the controller controls the motor to rotate in the reverse direction, causing the rotating sleeve 7 to move upward and lifting the screen 12 to the discharge height (such as 5-10cm above the bottom of the tank 1). At this time, the fermented residue is concentrated at the lowest point of the cone bottom due to the loss of the support of the screen 12, and can be discharged directly through the bottom discharge port without opening the lid.

[0047] Furthermore, in conventional food enzyme fermentation processes, some fermentation processes require intermittent stirring and turning of the mixture during the static fermentation stage to promote microbial metabolism. Based on the rigid connection structure between the rotating sleeve 7 and the screen 12, and combined with the compound motion characteristics of the rotating sleeve 7 during stirring—rotating and moving up and down simultaneously—the screen 12 forms a regular dynamic sieving action of "lifting and then lowering." That is, when the rotating sleeve 7 moves upward, the screen 12 moves upward simultaneously, applying an upward lifting force to the fermentation mixture through the screen 12, allowing the more fluid fermentation liquid to penetrate through the screen 12 preferentially, while the larger fermentation residue is temporarily intercepted. When the rotating sleeve 7 moves downward, the screen 12 presses down, forming a slight compression on the intercepted fermentation residue layer, causing the encapsulated fermentation liquid to seep out further. At the same time, the mechanical vibration of the screen 12 shakes off the fine residue adhering to the surface of the screen 12.

[0048] This active screening mechanism has significant advantages over traditional static filtration: First, the dynamic lifting and lowering action effectively prevents the fermented residue from accumulating on the surface of the screen 12 to form a "filter cake layer," reducing the risk of clogging the mesh on the screen 12 and ensuring the continuity of screening efficiency; Second, the synergistic effect of intermittent stirring and screening motion allows the fermented residue to be actively separated by the screen 12 before it is completely settled, greatly reducing the probability of insufficiently separated fermented residue settling below the screen 12 due to gravity, and improving the purity of the final fermentation liquid; Third, by integrating the stirring and screening operations into the same motion cycle, no additional screening power device is required, simplifying the equipment structure and reducing energy consumption and maintenance costs.

[0049] Based on the fermentation residue removal equipment proposed in this embodiment, the following experiments were conducted: • Experimental objective: To verify the efficiency of fermentation residue separation and pollution control capability of the device of the present invention under closed conditions, and to compare it with traditional residue removal equipment that requires opening the lid to confirm whether it solves the core technical problem of environmental pollution caused by conventional residue removal by opening the lid.

[0050] Experimental materials and equipment: Experimental materials: Food enzyme fermentation raw materials (containing starch culture medium + Bacillus subtilis strain, simulating food enzyme fermentation scenario). Sterile water, LB medium (for detecting contaminants).

[0051] Experimental equipment: The device of this invention (experimental group); Traditional open-top fermentation residue removal equipment (control group, such as the patented equipment CN221810371U mentioned in the background art). Turbidity meter (to measure the amount of solid residue in fermentation broth, reflecting separation efficiency); Sterile sampling tubes and incubators (for counting miscellaneous bacteria).

[0052] Experimental steps: 1. Pretreatment: Both groups of equipment (experimental group and control group) were sterilized at high temperature (121℃, 30min) to ensure that the initial environment was sterile.

[0053] Weigh out equal amounts of fermentation raw materials (10L each), and inoculate with equal amounts of Bacillus subtilis (1×10⁻⁶). 6 CFU / mL was added to two sets of equipment respectively.

[0054] 2. Fermentation and separation process: Fermentation stage: Both sets of equipment fermented for 24 hours at 37℃ and 150 rpm (simulating the food enzyme fermentation cycle).

[0055] Separation phase: Experimental group: The drive component is started by the controller to drive the screen to perform dynamic sieving of "rotation + up and down reciprocating" (displacement frequency 2 times / minute, displacement range 0 to the height of the bottom of the cone). After 30 minutes, the fermentation liquid is discharged through the electromagnetic valve (the whole process is closed).

[0056] Control group: After fermentation, the filter device (sieve) was manually opened and removed, the fermentation residue was scraped off and then the container was resealed and the fermentation liquid was discharged (the opening operation took about 5 minutes).

[0057] 3. Data Collection: Separation efficiency: Take 100 mL of each of the two fermentation broths and measure the turbidity using a turbidimeter (the higher the turbidity, the more solids remain and the lower the separation efficiency).

[0058] Contamination detection: Take 1 mL of each of the two fermentation broths, dilute them serially, spread them on LB medium, incubate at 37℃ for 48 h, and count the number of contaminating bacteria colonies (CFU / mL).

[0059] • Experimental data: index experimental group control group Turbidity of fermentation broth (NTU) 12.5 28.3 Bacterial count (CFU / mL) 5×10² <![CDATA[2×10 4 ]]> • Experimental conclusions: The turbidity of the fermentation broth in the experimental group (12.5 NTU) was significantly lower than that in the control group (28.3 NTU), indicating that the device of the present invention achieves more thorough separation of fermentation residue and reduces solid residue through the "dynamic sieving + closed-loop height adjustment" mechanism. Furthermore, the number of miscellaneous bacteria in the experimental group (5 × 10² CFU / mL) was only significantly lower than that in the control group (2 × 10² CFU / mL). 4 The 2.5% CFU / mL indicates that the separation operation in a closed environment effectively avoids contamination by external bacteria introduced by opening the lid, and reduces the probability of fermentation broth contamination compared to the traditional technique of opening the lid to remove residue.

[0060] Example 2:

[0061] As attached Figure 2 As shown, the difference from Example 1 is that an electromagnetic valve is fixedly connected to the four outlets. The electromagnetic valve is connected to the controller. The controller dynamically adjusts the opening and closing state of the electromagnetic valve based on preset fermentation process parameters (such as fermentation time, temperature threshold, and sieve 12 sieving completion signal). This achieves precise timing and flow control of fermentation liquid discharge. Furthermore, the fusion of multi-sensor data avoids the timing deviation or contamination risk that may be caused by manual operation, significantly improving the automation level and product quality stability of food enzyme fermentation production.

[0062] Example 3:

[0063] As attached Figure 1 and Figure 2 As shown, the difference from Embodiment 2 is that the upper part of the tank 1 is a cylindrical structure, and the bottom of the tank 1 is a conical structure. The conical bottom design utilizes the characteristics of gravity to guide the fermented residue to settle naturally towards the center. That is, the denser fermented residue slides down the inner wall of the cone to the lowest point of the bottom under the action of gravity during the static stage, forming a concentrated accumulation. This avoids the problem of edge filter residue deposition that is easy to occur in traditional flat-bottomed tanks 1, and facilitates subsequent cleaning operations. The shape of the screen 12 matches the conical shape of the bottom of the inner wall of the tank 1. This fitting design eliminates the dead corner area between the traditional flat screen 12 and the conical tank 1, and avoids the decrease in screening efficiency caused by the accumulation of fermented residue between the screen 12 and the tank 1. On the other hand, when the rotating sleeve 7 drives the screen 12 to move up and down, the edge of the screen 12 remains in contact with the inner wall of the cone. Through the periodic change of the gap between the screen 12 and the inner wall widening when it is lifted and the gap narrowing when it is lowered, a secondary screening effect of interception and compression is formed on the fermented residue sliding down the conical wall.

[0064] The height of the screen 12 is equal to the height of the conical bottom of the tank 1. The height of the screen 12 is completely consistent with the height of the conical bottom, ensuring that its vertical coverage area coincides with the height of the natural settling path of the fermented residue. When the fermentation mixture is left to stand, the trajectory of the denser fermented residue sliding down the inner wall of the conical shape coincides with the vertical screening area of ​​the screen 12. This ensures that the fermented residue will inevitably pass through the screen 12 for interception and screening during the settling process, avoiding the appearance of an unscreened settling area due to insufficient height of the screen 12.

[0065] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A food enzyme fermentation residue removal device, comprising a tank body (1), a feeding port (2) is formed at the top of the tank body (1), a sealing cover (3) is arranged on the feeding port (2), and a liquid outlet (4) is formed at the bottom of the tank body (1), characterized in that, The driving shaft (5) is provided at the center of the tank body (1) and penetrates the top wall of the tank body (1), the top of the tank body (1) is provided with a driving assembly (6) for driving the driving shaft (5) to rotate, the driving assembly (6) is signal connected with a controller, the outer side of the driving shaft (5) is vertically and slidingly connected with a stirring assembly for stirring the raw materials and the microbial bodies, and the bottom of the stirring assembly is fixedly connected with a removing assembly for removing the fermentation residues. The driving shaft (5) and the stirring assembly are provided with a threaded cylinder (13) fixedly connected with the inner top wall of the tank body (1), the threaded cylinder (13) is provided with a reciprocating threaded groove (14), the stirring assembly is slidingly connected in the reciprocating threaded groove (14), the inner wall of the tank body (1) is provided with an acquisition assembly for detecting the height information of the removing assembly, the acquisition assembly is signal connected with the controller, the rotating driving power and the driving time of the driving assembly (6) are adjusted by the controller, and the height of the removing assembly is adjusted to separate the fermentation residues and the fermentation liquid by combining the height information acquired by the acquisition assembly.

2. The food enzyme fermentation residue removing apparatus according to claim 1, characterized in that, The stirring assembly comprises a rotating sleeve (7) sleeved on the outer side of the driving shaft (5), the driving shaft (5) and the rotating sleeve (7) are vertically and slidingly connected, and the rotating sleeve (7) is fixedly connected with a screw stirring blade (10).

3. The food enzyme fermentation residue removing apparatus according to claim 2, characterized in that, The outer thread radius of the screw belt (101) of the screw stirring blade (10) is equal to the inner diameter of the tank body (1), and the outer edge of the screw belt (101) of the screw stirring blade (10) can be attached to the inner side wall of the tank body (1).

4. The food enzyme fermentation residue removing apparatus according to claim 2, wherein The outer edge of the screw belt (101) of the screw stirring blade (10) is fixedly connected with a wear-resistant sheet (11).

5. The food enzyme fermentation residue removing apparatus according to claim 2, wherein The removing assembly comprises a screen (12), and symmetrically arranged connecting sheets (103) are arranged between the screen (12) and the rotating sleeve (7), and the two ends of the connecting sheet (103) are fixedly connected with the screen (12) and the rotating sleeve (7) respectively.

6. The food enzyme fermentation residue removing apparatus according to claim 1, wherein The driving assembly (6) comprises a driving box (601) fixedly connected to the top end of the tank body (1), a servo motor (602) fixedly connected in the driving box (601), and the output shaft of the servo motor (602) is coaxially and fixedly connected with the top end of the driving shaft (5).

7. The food enzyme fermentation residue removing apparatus according to claim 5, wherein The acquisition assembly comprises a displacement sensor fixedly connected to the inner side wall of the tank body (1), and the displacement sensor is used for acquiring the height difference between the screen (12) and the bottom wall of the tank body (1).

8. The food enzyme fermentation residue removing apparatus according to claim 1, characterized in that, An electromagnetic valve is fixedly connected at the liquid outlet (4) and is signal connected with the controller.

9. The food enzyme fermentation residue removing apparatus according to claim 5, wherein The upper part of the tank body (1) is in a cylindrical structure, the bottom of the tank body (1) is in a conical structure, and the shape of the screen (12) is matched with the conical shape of the bottom of the tank body (1).

10. The food enzyme fermentation residue removing apparatus according to claim 9, characterized in that, The height of the screen (12) is equal to the height of the conical bottom of the tank body (1).

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