Intelligent closed solid vinegar brewing system based on synthetic microbial community

Abstract

The invention discloses an intelligent closed solid vinegar brewing system based on synthetic microbial communities. The intelligent closed solid vinegar brewing system comprises a solid fermentation tank, a spiral conveying device, an air inlet device, an inoculation device and a microcomputer control system, rotary driving devices are arranged at two ends of the solid-state fermentation tank; the rotary driving device is provided with an exhaust channel pipe in the horizontal direction. The air inlet device and the inoculation device are used for conveying corresponding oxygen and a synthesized microbial community fungicide into the solid-state fermentation tank through an oxygen conveying pipe and a spraying pipe which are arranged in the exhaust channel pipes on the same side respectively; a spiral conveying device is arranged on the solid-state fermentation tank; the microcomputer control system controls the spiral conveying device, the air inlet device, the inoculation device and the rotation driving device to be started and stopped through the PLC control system according to data of the acidity sensor, the temperature sensor, the oxygen concentration sensor and the alcoholic strength sensor. Automation, intelligentization and multi-functionalization are achieved, the product quality stability is greatly improved, and the method is suitable for large-scale industrial application.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vinegar brewing, in particular to an intelligent closed solid-state food vinegar brewing system based on a synthetic microbial community. BACKGROUND

[0002] Traditional solid-state brewed food vinegar in China has rich aroma, soft taste and rich nutrition, and has become a daily necessity for the public, with a continuously growing market. Zhenjiang aromatic vinegar, Shanxi old vinegar and Sichuan Baoning vinegar are typical representatives. Chinese food vinegar products are mainly made from rice and sorghum as main raw materials through steps of alcoholic fermentation, acetic acid fermentation and post-aging. Among them, acetic acid fermentation is the key step, involving complex microbial communities that work together to convert substrates such as carbohydrates and proteins in raw materials into flavor substances such as organic acids and amino acids, laying the foundation for the unique flavor quality of food vinegar. Since traditional solid-state food vinegar in China is mainly an open fermentation system, temperature, dissolved oxygen, humidity and other environmental conditions significantly affect the sensory quality of food vinegar by affecting the microbial community structure in the vinegar dregs.

[0003] In addition, the fermentation process is carried out in an open environment, using unsterilized sorghum, rice, bran, rice husk and other raw materials, especially using microbial community structure unknown Daqu, seed dregs and other fermentation agents to start fermentation, which makes the fermentation system contain very complex microbial communities. Although this traditional process is beneficial to the formation of unique flavor of grain food, it also causes problems such as difficult control of production process, unstable product quality, uncontrollable flavor and nutritional substances. Therefore, the quality of traditional solid-state brewed food vinegar is greatly affected by the environment, which greatly limits the development of China's traditional vinegar industry. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an intelligent closed solid-state food vinegar brewing system based on a synthetic microbial community, which solves the technical problems in the above background.

[0005] In order to achieve the above object, the application is implemented by the following technical scheme: the intelligent closed solid-state food vinegar brewing system based on synthetic microbial community includes a solid-state fermentation tank, a spiral conveying device, an air inlet device, an inoculation device and a microcomputer control system; the solid-state fermentation tank is provided with a rotary drive device at both ends for driving the solid-state fermentation tank to rotate; the rotary drive device is provided with an exhaust passage pipe along the horizontal direction; the air inlet device and the inoculation device respectively deliver corresponding oxygen and artificially synthesized microbial community fungicides into the solid-state fermentation tank through the oxygen delivery pipes and the spray pipes arranged in the exhaust passage pipes on the same side; the exhaust passage pipe on the other side of the rotary drive device is provided with an exhaust pipe connected to the tail gas treatment device; the solid-state fermentation tank is provided with a spiral conveying device for conveying the materials entering from the feed inlet of the solid-state fermentation tank; the microcomputer control system includes a system control box, an acidity sensor, a temperature sensor, an oxygen concentration sensor and an alcohol content sensor; the acidity sensor, the temperature sensor, the oxygen concentration sensor and the alcohol content sensor are arranged in the solid-state fermentation tank; the system control box is arranged outside the solid-state fermentation tank, and the system control box controls the opening and closing of the spiral conveying device, the air inlet device, the inoculation device and the rotary drive device through the built-in PLC control system according to the parameter data of the acidity sensor, the temperature sensor, the oxygen concentration sensor and the alcohol content sensor.

[0006] Further, the rotary drive device includes a speed reducer motor, a bearing seat bracket, a rotating shaft, a bearing with seat, a sliding rotating shaft and a driven rotating shaft; one end of the rotating shaft and the driven rotating shaft is respectively connected to both ends of the solid-state fermentation tank through a flange, the other end of the rotating shaft and the driven rotating shaft is respectively fixed with a material adding gland, and a sliding rotating shaft is arranged on the material adding gland, and a bearing with seat is arranged in the middle part of the rotating shaft and the driven rotating shaft; the bearing with seat is fixed on the bearing seat bracket; the speed reducer motor is fixed on the bearing seat bracket on one side, and a speed reducer driving wheel is arranged on the driving shaft of the speed reducer motor; the speed reducer driving wheel is engaged with a speed reducer driven wheel arranged on the rotating shaft for transmission; the rotating shaft and the driven rotating shaft are respectively concentrically provided with an exhaust passage pipe, and both ends of the exhaust passage pipe are respectively sealed and fixed with the flange and the material adding gland.

[0007] Further, the solid-state fermentation tank includes a tank body, a feed inlet, a vinegar residue discharge port, a liquid discharge port, a full-length filter plate and a baffle; the tank body is provided with the feed inlet and the vinegar residue discharge port on the upper wall, and the liquid discharge port on the lower wall; the inside lateral wall of the tank body is fixed with the full-length filter plate, which is located in the middle and lower part of the inside of the tank body, above the liquid discharge port; the full-length filter plate adopts an upwardly arched arc-shaped plate, which is uniformly provided with filter holes, and the longitudinal section of the filter hole is a parallelogram structure with a small upper part and a large lower part; the inside upper wall and the inside lower wall of the tank body are uniformly provided with a plurality of baffles.

[0008] Further, the screw conveying device comprises a screw conveyor and a screw conveying rod; the screw conveying rod is horizontally arranged on the sidewall of the tank body and is drivingly connected with the screw conveyor arranged outside the tank body, and the horizontal center line of the screw conveying rod is in the same plane as the vertical center line of the feed inlet and the vinegar residue discharge outlet.

[0009] Further, the inoculation device comprises a first seed tank, a second seed tank, a centrifugal pump and a water storage tank; the bottom outlet of each of the first seed tank, the second seed tank and the water storage tank is provided with a switch valve, which is connected with a conveying pipeline through the switch valve; the conveying pipeline is provided with the centrifugal pump, and the outlet of the centrifugal pump is connected with a spray pipe which penetrates through the exhaust passage pipe and extends into the solid-state fermentation tank, and the spray pipe is located above the inside of the solid-state fermentation tank and below the screw conveying rod; the spray pipe is connected with a spray head.

[0010] Further, the air inlet device comprises a gas storage tank and an air compressor; the gas storage tank is connected with the air compressor, and the outlet of the gas storage tank is connected with an oxygen conveying pipe which penetrates through the exhaust passage pipe; the oxygen conveying pipe is provided with a plurality of gas distributors.

[0011] Further, the tail gas treatment device comprises an exhaust pipe, a gas filter, a primary absorption tank, a secondary absorption tank and an air outlet pipe; the primary absorption tank and the secondary absorption tank are arranged side by side and are connected through a conduit; the primary absorption tank penetrates through the exhaust passage pipe and extends into the solid-state fermentation tank through the exhaust pipe, and the end of the exhaust pipe extending into the solid-state fermentation tank is higher than the height of the spray pipe, and the other end of the exhaust pipe extends below the liquid level of the primary absorption tank; the part of the exhaust pipe located outside the solid-state fermentation tank is provided with the gas filter; the secondary absorption tank is provided with the air outlet pipe.

[0012] Further, the primary absorption tank is provided with a water inlet, a liquid level monitoring window and a water outlet; the conduit is provided with a check valve; the air outlet pipe is provided with an activated carbon filter element.

[0013] Further, the artificially synthesized microbial community bacterial agent comprises lactic acid bacteria and acetic acid bacteria, and the lactic acid bacteria and the acetic acid bacteria are respectively a plurality of quantitatively proportioned composite bacterial bacterial agents; the lactic acid bacteria are inoculated first, and then the facultative anaerobic fermentation is performed for 6-24 hours, the acetic acid bacteria are inoculated, and then the aerobic acetic acid fermentation is performed; or the acetic acid bacteria are inoculated first, and then the aerobic acetic acid fermentation is performed, the lactic acid bacteria are inoculated, and then the facultative anaerobic fermentation is performed for 6-24 hours; or the lactic acid bacteria and the acetic acid bacteria are inoculated at the same time and then fermentation is performed. Beneficial effects

[0014] The application provides an intelligent closed solid-state food vinegar brewing system based on a synthetic microbial community, and has the following beneficial effects compared with the prior art: the application forms a closed solid-state fermentation tank through reasonable structural arrangement, uses artificially synthesized microbial community fungicides as fermentation agents, injects wine mash, auxiliary materials and filling materials into the closed solid-state fermentation tank, inoculates the artificially synthesized microbial community fungicides through an inoculation device, starts vinegar fermentation, and uses the parameter data of an acidity sensor, a temperature sensor, an oxygen concentration sensor and an alcohol content sensor as the control strategy of a fuzzy self-tuning PID controller based on a neural network to realize the operation of food vinegar brewing under the conditions of closure, controllability and intelligence, feed back operation instructions, accurately control the fermentation process, and associate the opening and closing of each physicochemical index monitoring device and each control device switch, automatically control the fermentation environment through a mathematical model, improve the control of directional food vinegar brewing quality, effectively control the fermentation environment, complete the vinegar leaching operation in the closed solid-state fermentation tank after the vinegar fermentation is completed, harvest raw vinegar, and discharge vinegar dregs, realize the integration of fermentation and vinegar leaching operation, and greatly improve the automation, intelligence, multifunctional degree and product quality stability, realize the overall uniform fermentation of vinegar grains, shorten the fermentation period, ensure that the vinegar liquid has good flavor, effectively reduce vinegar acid volatilization, improve the vinegar yield, increase the raw material utilization rate by about 10%, and are suitable for large-scale industrial application. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the application.

[0016] Figure 2 It is a schematic diagram of the connection structure of the solid-state fermentation tank and the rotary driving device of the application.

[0017] Figure 3 It is a schematic diagram of the structure of the rotary driving device of the application.

[0018] Figure 4 It is a schematic diagram of the structure of the tail gas treatment device of the application.

[0019] Figure 5 It is a schematic diagram of the baffle setting structure of the solid-state fermentation tank of the application.

[0020] In the drawings: Solid-state fermentation tank 1; tank body 101; feed inlet 102; vinegar dregs discharge outlet 103; liquid discharge outlet 104; through-length filter plate 105; baffle 106; Screw conveying device 2; screw conveyor 201; screw conveying rod 202; Air inlet device 3; gas storage tank 301; air compressor 302; gas distributor 303; oxygen conveying pipe 304; Inoculation device 4; first seed tank 401; second seed tank 402; centrifugal pump 403; water storage tank 404; spray pipe 405; spray head 406; Tail gas treatment device 5; exhaust pipe 501; gas filter 502; first-stage absorption tank 503; water inlet 504; liquid level monitoring window 505; water outlet 506; conduit 507; check valve 508; second-stage absorption tank 509; gas outlet pipe 510; activated carbon filter element 511; Microcomputer control system 6; system control box 601; acidity sensor 602; temperature sensor 603; oxygen concentration sensor 604; alcohol concentration sensor 605; Rotary drive device 7; speed reduction motor 701; flange 702; bearing seat bracket 703; rotary shaft 704; speed reduction driving pulley 705; speed reduction driven pulley 706; bearing with seat 707; sliding rotating shaft 708; material adding gland 709; exhaust passage pipe 710; driven rotating shaft 711. DETAILED DESCRIPTION

[0021] The present disclosure will be further described by the following embodiments with reference to the drawings. It is to be understood that the specific embodiments described herein are merely illustrative and not limiting to the present disclosure. In addition, it should be noted that only parts related to the present disclosure are shown in the drawings for the convenience of description.

[0022] As Figures 1 to 5As shown, the intelligent closed solid-state vinegar brewing system based on synthetic microbial community includes a solid-state fermentation tank 1, a spiral conveying device 2, an air inlet device 3, an inoculation device 4 and a microcomputer control system 6; the solid-state fermentation tank 1 is provided with a rotary driving device 7 at both ends for driving the solid-state fermentation tank 1 to rotate; the rotary driving device 7 is provided with an exhaust passage pipe 710 in the horizontal direction; the air inlet device 3 and the inoculation device 4 respectively deliver corresponding oxygen and artificially synthesized microbial community fungicides into the solid-state fermentation tank 1 through the oxygen delivery pipe 304 and the spraying pipe 405 arranged in the same side of the exhaust passage pipe 710; the exhaust passage pipe 710 on the other side of the rotary driving device 7 is provided with an exhaust pipe 501 connected to the tail gas treatment device 5; the solid-state fermentation tank 1 is provided with the spiral conveying device 2 for conveying the materials entering from the feed inlet 102 of the solid-state fermentation tank 1; the microcomputer control system 6 includes a system control box 601, an acidity sensor 602, a temperature sensor 603, an oxygen concentration sensor 604 and an alcohol content sensor 605; the acidity sensor 602, the temperature sensor 603, the oxygen concentration sensor 604 and the alcohol content sensor 605 are arranged in the solid-state fermentation tank 1; the system control box 601 is arranged outside the solid-state fermentation tank 1, and the system control box 601 controls the opening and closing of the spiral conveying device 2, the air inlet device 3, the inoculation device 4 and the rotary driving device 7 through the built-in PLC control system according to the parameter data of the acidity sensor 602, the temperature sensor 603, the oxygen concentration sensor 604 and the alcohol content sensor 605. The present application forms a closed solid-state fermentation tank with a reasonable structure, uses artificially synthesized microbial community fungicides as a leavening agent, injects wine mash, auxiliary materials and filling materials into the closed solid-state fermentation tank 1 in the vinegar brewing system, inoculates artificially synthesized microbial community fungicides through the inoculation device 4, starts vinegar fermentation, and uses the parameter data of the acidity sensor 602, the temperature sensor 603, the oxygen concentration sensor 604 and the alcohol content sensor 605 as the control strategy of the fuzzy self-tuning PID controller based on neural network to realize the operation of vinegar brewing under the conditions of closure, controllability and intelligence, feedback operation instructions, precise control of the fermentation process, and association of each physicochemical index monitoring device with the opening and closing of each control device switch for automatic control of the fermentation environment through a mathematical model to improve the control of directional vinegar brewing quality; the fermentation environment can be effectively controlled, the vinegar leaching operation is completed in the closed solid-state fermentation tank after the vinegar fermentation is completed, raw vinegar is harvested, and vinegar residues are discharged, realizing the integration of fermentation and vinegar leaching operation, greatly improving the degree of automation, intelligence, multifunction and product quality stability, effectively reducing vinegar acid volatilization, improving the vinegar yield, increasing the raw material utilization rate by about 10%, and being suitable for large-scale industrial application.

[0023] As a preferred embodiment, as Figure 2 andFigure 3 As shown in the figure, the rotary drive device 7 comprises a speed reducer motor 701, a bearing seat bracket 703, a rotating shaft 704, a bearing seat 707, a sliding rotating shaft 708 and a driven rotating shaft 711; one end of the rotating shaft 704 and the driven rotating shaft 711 is connected to the two ends of the solid state fermentation tank 1 through the flange 702 respectively, the other end of the rotating shaft 704 and the driven rotating shaft 711 is fixed with the material adding gland 709, and the sliding rotating shaft 708 is arranged on the material adding gland 709, and the middle part of the rotating shaft 704 and the driven rotating shaft 711 is provided with the bearing seat 707; the bearing seat 707 is fixed on the bearing seat bracket 703; the speed reducer motor 701 is fixed on the bearing seat bracket 703 on one side, and the driving shaft of the speed reducer motor 701 is provided with a speed reducer driving wheel 705; the speed reducer driving wheel 705 is engaged with a speed reducer driven wheel 706 arranged on the rotating shaft 704; the rotating shaft 704 and the driven rotating shaft 711 are concentrically provided with an exhaust passage pipe 710 respectively, and the two ends of the exhaust passage pipe 710 are sealed and fixed with the flange 702 and the material adding gland 709 respectively. The solid state fermentation tank 1 is arranged horizontally on the flange 702, and the solid state fermentation tank 1 is driven by the speed reducer motor 701 to rotate the whole machine, so that the solid state fermentation tank 1 can realize the operation in the positive and negative directions at regular time, and the rotation of the solid state fermentation tank 1 can realize the mixing in the radial direction, so that the material in the solid state fermentation tank 1 can be fully shaken and mixed, and the rotation and stirring can solve the problems of the hardening of the vinegar dregs caused by the pouring process and the insufficient oxygen supply caused by the hardening of the vinegar dregs. The present application can supply oxygen to the upper and lower parts and the internal part of the vinegar dregs, realize the uniform fermentation of the whole vinegar dregs, shorten the fermentation period, ensure that the vinegar liquid has good flavor, and the loading capacity of the solid state fermentation tank 1 can reach 70%, so that the production efficiency can be greatly improved under the condition of ensuring the quality.

[0024] As a preferred embodiment, as shown in Figure 1 and Figure 2 As shown in the figure, the solid state fermentation tank 1 comprises a tank body 101, a feeding port 102, a vinegar dregs discharging port 103, a liquid discharging port 104, a full-length filter plate 105 and a baffle 106; the feeding port 102 and the vinegar dregs discharging port 103 are arranged on the upper wall of the tank body 101, and the liquid discharging port 104 is arranged on the lower wall; the full-length filter plate 105 is fixed on the inner side wall of the tank body 101, and the full-length filter plate 105 is located in the middle and lower part of the inner part of the tank body 101, above the liquid discharging port 104; the full-length filter plate 105 adopts an upwardly arched arc-shaped plate, and the arc-shaped plate is uniformly provided with filter holes, and the longitudinal section of the filter hole is a parallelogram structure with a small upper part and a large lower part, which is beneficial to the vinegar brine or vinegar liquid flowing into the cavity after being filtered, and also tries to reduce the vinegar dregs falling into the cavity from the filter holes; so that the space between the lower surface of the full-length filter plate 105 and the bottom of the tank body 101 forms a cavity for collecting the vinegar brine or the poured vinegar liquid, and the space between the upper surface of the full-length filter plate 105 and the upper part of the tank body forms a vinegar dregs fermentation space; as shown in Figure 5As shown in the drawings, the inner upper wall and lower wall of the tank body 101 are uniformly provided with a plurality of baffles 106. The feed inlet 102 is arranged at the upper middle part of the tank body 101, the spiral conveying rod 202 is arranged at the upper part in the tank body 101, the vinegar residue outlet 103 is located at the tail of the spiral conveying rod 202 (the right side of the tank body), and the liquid outlet 104 is arranged at the lower middle part of the tank body 101. After fermentation is completed, the raw vinegar flows out from the liquid outlet 104, and the vinegar residue is discharged from the vinegar residue outlet 103 by the spiral conveying device 2.

[0025] As a preferred embodiment, as shown in the drawings, Figure 1 and Figure 2 The spiral conveying device 2 includes a spiral conveyor 201 and a spiral conveying rod 202; the spiral conveying rod 202 is horizontally arranged on the side wall of the tank body 101 and is drivingly connected with the spiral conveyor 201 arranged outside the tank body 101, and the horizontal center line of the spiral conveying rod 202 is in the same plane as the vertical center lines of the feed inlet 102 and the vinegar residue outlet 103, so that the spiral conveying device 2 can mix the materials located around the spiral conveying rod 202 in the tank body 101 in the axial direction and discharge the vinegar residue.

[0026] As a preferred embodiment, as shown in the drawings, Figure 1 and Figure 3 The inoculation device 4 includes a first seed tank 401, a second seed tank 402, a centrifugal pump 403 and a water storage tank 404; the bottom outlets of the first seed tank 401, the second seed tank 402 and the water storage tank 404 are respectively provided with on-off valves which are connected with conveying pipelines; the conveying pipelines are provided with the centrifugal pump 403, the outlet of the centrifugal pump 403 is connected with a spray pipe 405 which penetrates through the exhaust passage pipe 710 and extends into the solid-state fermentation tank 1, and the spray pipe 405 is located above the inside of the solid-state fermentation tank 1 and below the spiral conveying rod 202; the spray pipe 405 is connected with a spray head 406. This structure can realize inoculation through the first seed tank 401, the second seed tank 402 and the spray head 406, and the spray head 406 can uniformly inoculate the bacterial agent to the surface of the vinegar dregs; in addition, the water storage tank 404 and the spray head 406 can spray the solid-state fermentation tank 1, form the upper vinegar dregs fermentation space and the lower filter cavity for collecting vinegar brine or vinegar liquid, and realize the combination of the two functions, the multifunction of the same equipment, the maximum use of the equipment and the improvement of the equipment utilization.

[0027] As a preferred embodiment, as shown in the drawings, Figure 1 and Figure 3As shown, the air inlet device 3 includes a gas tank 301 and an air compressor 302; the gas tank 301 is connected with the air compressor 302, a pipeline connected with the outlet of the gas tank 301 is connected with an oxygen delivery pipe 304 passing through the exhaust passage pipe 710; a plurality of gas distributors 303 are arranged on the oxygen delivery pipe 304, the gas tank 301 in the air inlet device 3 supplies oxygen to the solid state fermentation tank 1 through the oxygen delivery pipe 304, the oxygen input amount is controlled by the opening degree of the mass flow meter, and the oxygen is quantitatively delivered into the tank body 101, the gas distributors 303 are uniformly distributed below the solid material, and the accurate supply of the fermentation oxygen demand can be realized, the oxygen is supplied to the upper and lower parts and the inside of the vinegar dregs, the technical problem of insufficient oxygen supply of the vinegar dregs is solved, the whole vinegar dregs is uniformly fermented, the fermentation period is shortened, and the vinegar liquid has good flavor.

[0028] As a preferred embodiment, as shown in Figure 1 and Figure 4 As shown, the tail gas treatment device 5 includes an exhaust pipe 501, a gas filter 502, a primary absorption tank 503, a secondary absorption tank 509 and an air outlet pipe 510; the primary absorption tank 503 and the secondary absorption tank 509 are arranged side by side, and the primary absorption tank 503 and the secondary absorption tank 509 are connected through a conduit 507; the primary absorption tank 503 passes through the exhaust passage pipe 710 through the exhaust pipe 501 and extends into the solid state fermentation tank 1, and the end of the exhaust pipe 501 extending into the solid state fermentation tank 1 is higher than the height of the spray pipe 405, and the other end of the exhaust pipe 501 extends below the liquid level of the primary absorption tank 503; the part of the exhaust pipe 501 located outside the solid state fermentation tank 1 is provided with the gas filter 502; the secondary absorption tank 509 is provided with the air outlet pipe 510. The tail gas generated in the fermentation in the tank body 101 is preliminarily filtered through the gas filter 502 in the air inlet pipe 501, and then enters the primary absorption tank 503, the tail gas is contacted with the absorption liquid in the primary absorption tank 503, and the volatile components are dissolved in the absorption liquid, and the absorption liquid is supplemented every 48 h through the water inlet 504. The tail gas not fully absorbed in the primary absorption tank 503 is connected with the secondary absorption tank 509 through the conduit 507, a check valve 508 is arranged on the conduit 507 to prevent backflow, the secondary absorption tank is filled with absorption liquid for absorbing the volatile components not absorbed by the primary absorption tank, and the treated tail gas is discharged after further adsorption by the activated carbon filter element 511 in the air outlet pipe 510.

[0029] As a preferred embodiment, the primary absorption tank 503 is provided with a water inlet 504, a liquid level monitoring window 505 and a water outlet 506; the conduit 507 is provided with a check valve 508; the air outlet pipe 510 is provided with an activated carbon filter element 511.

[0030] As a preferred embodiment, the artificially synthesized microbial community bacterial agent comprises lactic acid bacteria and acetic acid bacteria, the lactic acid bacteria and the acetic acid bacteria are respectively a plurality of quantitatively proportioned composite bacterial bacterial agent, the lactic acid bacteria is inoculated first, and facultative anaerobic fermentation is carried out for 6-24h, then the acetic acid bacteria is inoculated, and aerobic acetic acid fermentation is carried out; or the acetic acid bacteria is inoculated first, and aerobic acetic acid fermentation is carried out, then the lactic acid bacteria is inoculated, and facultative anaerobic fermentation is carried out for 6-24h; or the lactic acid bacteria and the acetic acid bacteria are inoculated at the same time and then fermentation is carried out. By using the artificially synthesized microbial community bacterial agent as a ferment, the problems of unknown microbial community structure, difficult production process control, unstable product quality and the like in the traditional process are solved, and directional control of vinegar flavor and nutritional substances can be realized.

[0031] Application example: the intelligent closed solid-state food vinegar brewing system based on the synthetic microbial community is applied to solid-state fermentation food vinegar, the solid-state fermentation vinegar brewing system volume is 20000L, the loading coefficient is 70%, the main raw material is waxy rice, the auxiliary material and filler are bran and rice husk, the fermentation temperature is 40-47℃, and the specific implementation is as follows: 96kg of waxy rice is fermented to obtain 9.0%(v / v) of wine mash 384kg, then lactic acid bacteria is added, the mixture is stirred uniformly, then the wine mash after inoculation, 163.2kg of bran and 76.8kg of large bran are added to the solid-state fermentation tank 1, the rotary drive device 7 is started, the tank body 101 is rotated, and the materials are uniformly mixed; then the system is closed and oxygen is isolated for 24h; second inoculation, 7500mL of acetic acid bacteria is inoculated from the feeding port 102, the rotary drive device 7 is started, and then acetic acid fermentation is carried out. During the fermentation process, the tank body 101 needs to be turned over 2-5 times a day, the air flow is maintained at 1.2-2m 3 / h, and the exhaust port is kept open. After the fermentation is completed, water is added according to 50% of the vinegar content, and then repeated spraying is carried out, the fried rice color is added and is placed for 1-3 days, sugar and salt are added for decocting vinegar, and finally food vinegar is obtained. Under the operation conditions, the intelligent solid-state food vinegar brewing is realized, the fermentation time is greatly shortened, the balance between the food vinegar quality and the yield in the fermentation system is maintained, the waste of resources is reduced, and compared with the traditional brewing process, the food vinegar produced by the application has a high proportion of non-volatile acid of about 20%, and the overall taste is more optimal.

[0032] Those skilled in the art should understand that the above embodiments are only for clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. Based on the above disclosure, other changes or modifications can also be made by those skilled in the art, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. An intelligent closed solid-state vinegar brewing system based on synthetic microbial community, comprising a solid-state fermentation tank, a screw conveyor, an air inlet device, an inoculation device and a microcomputer control system; characterized in that, The solid state fermentation tank is provided with a rotary driving device at both ends for driving the solid state fermentation tank to rotate; the rotary driving device is provided with an exhaust passage pipe in the horizontal direction; the air inlet device and the inoculation device respectively deliver corresponding oxygen and artificially synthesized microbial community fungicide into the solid state fermentation tank through the oxygen delivery pipe and the spraying pipe arranged in the exhaust passage pipe on the same side; the exhaust passage pipe on the other side of the rotary driving device is provided with an exhaust pipe connected to the tail gas treatment device; the solid state fermentation tank is provided with a spiral conveying device for conveying the material entering from the feed inlet of the solid state fermentation tank; the microcomputer control system comprises a system control box, an acidity sensor, a temperature sensor, an oxygen concentration sensor and an alcohol content sensor; the acidity sensor, the temperature sensor, the oxygen concentration sensor and the alcohol content sensor are arranged in the solid state fermentation tank; the system control box is arranged outside the solid state fermentation tank, and the system control box controls the opening and closing of the spiral conveying device, the air inlet device, the inoculation device and the rotary driving device through the built-in PLC control system according to the parameter data of the acidity sensor, the temperature sensor, the oxygen concentration sensor and the alcohol content sensor.

2. The intelligent closed solid state food vinegar brewing system based on synthetic microbial community according to claim 1, characterized in that, The rotary driving device comprises a speed reduction motor, a bearing seat bracket, a rotating shaft, a bearing with seat, a sliding rotating shaft and a driven rotating shaft; one end of the rotating shaft and the driven rotating shaft is respectively connected to both ends of the solid state fermentation tank through a flange; the other end of the rotating shaft and the driven rotating shaft is respectively fixed with a material feeding gland, and a sliding rotating shaft is arranged on the material feeding gland; the middle part of the rotating shaft and the driven rotating shaft is provided with a bearing with seat; the bearing with seat is fixed on the bearing seat bracket; the speed reduction motor is fixed on one side of the bearing seat bracket, and a speed reduction driving wheel is arranged on the driving shaft of the speed reduction motor; the speed reduction driving wheel is engaged with a speed reduction driven wheel arranged on the rotating shaft for transmission; the rotating shaft and the driven rotating shaft are respectively provided with an exhaust passage pipe in a concentric manner, and the two ends of the exhaust passage pipe are respectively sealed and fixed with the flange and the material feeding gland. 3.The intelligent closed solid-state food vinegar brewing system based on synthetic microbial community according to claim 1, characterized in that, The solid state fermentation tank comprises a tank body, a feed inlet, a vinegar residue discharge port, a liquid discharge port, a full-length filter plate and a baffle; the feed inlet and the vinegar residue discharge port are arranged on the upper wall of the tank body, and the liquid discharge port is arranged on the lower wall; the full-length filter plate is fixed on the inner side wall of the tank body, and is located in the lower middle part of the tank body above the liquid discharge port; the full-length filter plate adopts an upwardly arched arc-shaped plate, and the arc-shaped plate is uniformly provided with filter holes; the longitudinal section of the filter hole is a parallelogram structure with a small upper part and a large lower part; a plurality of baffles are uniformly arranged on the inner upper wall and the inner lower wall of the tank body. 4.The intelligent closed solid-state food vinegar brewing system based on synthetic microbial community according to claim 3, characterized in that, The spiral conveying device comprises a spiral conveyor and a spiral conveying rod; the spiral conveying rod is horizontally arranged on the side wall of the tank body and is drivingly connected with the spiral conveyor arranged outside the tank body, and the horizontal center line of the spiral conveying rod and the vertical center line of the feed inlet and the vinegar residue discharge port are in the same plane. 5.The intelligent closed solid-state food vinegar brewing system based on synthetic microbial community according to claim 1, characterized in that, The inoculation device comprises a first seed tank, a second seed tank, a centrifugal pump and a water storage tank; a switch valve is arranged on the bottom outlet of the first seed tank, the second seed tank and the water storage tank respectively, and the switch valves are connected with conveying pipelines; the conveying pipelines are provided with the centrifugal pump; the conveying pipeline at the outlet of the centrifugal pump is connected with a spraying pipe which penetrates through the exhaust passage pipe and extends into the solid state fermentation tank, and the spraying pipe is located above the inside of the solid state fermentation tank and below the spiral conveying rod; and a spraying head is connected with the spraying pipe. 6.The intelligent closed solid-state food vinegar brewing system based on synthetic microbial community according to claim 1, wherein, The air inlet device comprises a gas storage tank and an air compressor; the gas storage tank is connected with the air compressor; a pipeline connected with the outlet of the gas storage tank is connected with an oxygen conveying pipeline which penetrates through the exhaust passage pipe; and a plurality of gas distributors are arranged on the oxygen conveying pipeline. 7.The intelligent closed solid-state food vinegar brewing system based on synthetic microbial community according to claim 5, characterized in that, The tail gas treatment device comprises an exhaust pipe, a gas filter, a first absorption tank, a second absorption tank and an air outlet pipe; the first absorption tank and the second absorption tank are arranged side by side and connected through a conduit; the first absorption tank penetrates through the exhaust passage pipe and extends into the solid state fermentation tank through the exhaust pipe, and the end of the exhaust pipe extending into the solid state fermentation tank is higher than the height of the spraying pipe; the other end of the exhaust pipe extends below the liquid surface of the first absorption tank; the part of the exhaust pipe located outside the solid state fermentation tank is provided with the gas filter; and the second absorption tank is provided with the air outlet pipe. 8.The intelligent closed solid-state food vinegar brewing system based on synthetic microbial community according to claim 7, characterized in that, The first absorption tank is provided with a water inlet, a liquid level monitoring window and a water outlet; a check valve is arranged on the conduit; and an activated carbon filter element is arranged in the air outlet pipe. 9.The intelligent closed solid-state food vinegar brewing system based on synthetic microbial community according to claim 1, characterized in that, The artificially synthesized microbial community bacterial agent comprises lactic acid bacteria and acetic acid bacteria, and the lactic acid bacteria and the acetic acid bacteria are respectively a plurality of quantitatively proportioned composite bacterial bacterial agents; the lactic acid bacteria are inoculated first, and then the facultative anaerobic fermentation is performed for 6-24 hours; the acetic acid bacteria are inoculated, and then the aerobic acetic acid fermentation is performed; or the acetic acid bacteria are inoculated first, and then the aerobic acetic acid fermentation is performed; the lactic acid bacteria are inoculated, and then the facultative anaerobic fermentation is performed for 6-24 hours; or the lactic acid bacteria and the acetic acid bacteria are inoculated simultaneously, and then fermentation is performed.

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