White spirit low-temperature fermentation container capable of intelligently exhausting based on food processing and fermentation method

Abstract

The invention relates to the technical field of food processing and production, and discloses a baijiu low-temperature fermentation container capable of intelligently exhausting based on food processing and a fermentation method.The baijiu low-temperature fermentation container capable of intelligently exhausting based on food processing comprises a fermentation tank, a partition plate is fixedly connected into the fermentation tank, and the fermentation tank is divided into a fermentation area and a gas storage area by the partition plate; an air guide mechanism is vertically arranged in the middle of the partition plate and comprises a telescopic outer pipe arranged in the fermentation area, and a buoyancy plate is arranged at the upper end of the telescopic outer pipe. Carbon dioxide generated in the Baijiu fermentation process can directly flow downwards into the gas storage area through the upper end of the telescopic outer pipe, carbon dioxide is prevented from being stored above the liquid level, meanwhile, directional airflow is formed in the fermentation tank when nitrogen is conveyed, the discharged carbon dioxide is collected through the collecting box, and the effect of improving the efficiency is achieved. Carbon emission generated in food production can be reduced, carbon dioxide can be used in various industrial fields after being purified, the resource utilization efficiency is improved, and the production cost of enterprises is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing and production, and particularly to a low-temperature fermentation container for Baijiu (Chinese liquor) that can intelligently exhaust gas and a fermentation method based on food processing. Background Art

[0002] Low-temperature fermentation of Baijiu is a process that controls the temperature (usually 15–25 °C) to slow down the microbial metabolism rate and optimize the generation of flavor substances, which is common in the production of light-aroma type and rice-aroma type Baijiu. During the alcohol fermentation stage, yeast decomposes sugars into alcohol and carbon dioxide under anaerobic conditions. The increase in gas will increase the internal pressure of the container, and most of the energy generated during the reaction will be released in the form of heat, increasing the internal temperature of the container.

[0003] In the field of large-scale food processing and production, by setting a gas replacement device and a monitoring module in the fermentation container, when the monitoring module detects that the pressure in the container is too high, the gas replacement device fills the container with an inert gas (such as nitrogen). The gas flow drives the carbon dioxide and heat in the container to be discharged, preventing the internal pressure of the container from being too high and damaging the structure of the fermented grains. However, in the prior art, nitrogen is directly transported into the container through a gas pipeline, resulting in a disordered gas flow direction inside the container, making it difficult to quickly and effectively discharge carbon dioxide completely. Therefore, the gas replacement device needs to be started frequently. When carbon dioxide is not discharged completely, since the density of carbon dioxide is greater than that of air, the carbon dioxide gas is located below the air and contacts the liquid surface of the Baijiu. At this time, carbon dioxide will affect the activity of microorganisms in the upper layer of the liquor, hindering the uniformity of Baijiu fermentation, and thus reducing the flavor and quality of Baijiu. Summary of the Invention

[0004] In view of the problem in the prior art that it is difficult to quickly and completely discharge carbon dioxide in the container, a low-temperature fermentation container for Baijiu that can intelligently exhaust gas based on food processing is proposed.

[0005] Its purpose is to utilize the density difference between carbon dioxide, nitrogen, and air to directly make the generated carbon dioxide flow into a separately provided cavity, avoiding a small amount of carbon dioxide on the liquid surface of the Baijiu, and at the same time quickly discharging the carbon dioxide collected in the cavity.

[0006] The technical solution of the present invention is a low-temperature fermentation container for liquor that can intelligently exhaust air during food processing, including a fermentation tank. A horizontally arranged partition is fixedly connected to the lower part inside the fermentation tank. The partition divides the cavity of the fermentation tank into a fermentation area and a gas storage area from top to bottom. A gas guiding mechanism is vertically arranged in the middle of the partition. The gas guiding mechanism includes a telescopic outer tube arranged in the fermentation area. The lower end of the telescopic outer tube is fixedly and penetratively connected to the partition. A buoyancy plate is arranged at the upper end of the telescopic outer tube. The buoyancy plate floats on the liquor surface so that the upper port of the telescopic outer tube is close to the liquor surface. A telescopic inner tube is sleeved inside the telescopic outer tube. Both ends of the telescopic inner tube extend to the outside of the telescopic outer tube. The lower end of the telescopic inner tube penetrates out of the fermentation tank and is connected to an external nitrogen delivery device, and the telescopic inner tube communicates with the gas storage area; The gas guiding mechanism further includes an exhaust pipe fixedly connected to the bottom of the fermentation tank. One end of the exhaust pipe communicates with the gas storage area. The other end of the exhaust pipe is connected to a collection box. The lower end of the telescopic inner tube fixedly penetrates the exhaust pipe and extends downward. A regulating valve is jointly arranged between the exhaust pipe and the telescopic inner tube. When nitrogen is introduced into the telescopic inner tube, it drives the regulating valve to move upward, switching the ventilation state between the telescopic inner tube and the exhaust pipe.

[0007] By adopting the above technical solution, the brewing raw materials are fermented in the fermentation area. The buoyancy plate can make the upper end of the telescopic outer tube expose above the liquid surface. The generated carbon dioxide leaves the liquid surface and flows downward through the port of the telescopic outer tube to the gas storage area under the action of gravity. The air originally stored in the gas storage area enters the upper part of the fermentation area through the inside of the telescopic inner tube. The external nitrogen delivery device can transport nitrogen into the fermentation tank through the lower end of the telescopic inner tube. When the nitrogen drives the regulating valve to rise, the connection state between the telescopic inner tube and the gas storage area is closed, and at the same time, the exhaust state of the exhaust pipe is opened. The nitrogen flows upward inside the telescopic inner tube and is discharged to the upper part of the fermentation area. The air flow in the gap between the telescopic outer tube and the telescopic inner tube flows downward, so as to drive the carbon dioxide in the gas storage area to flow to the collection box through the exhaust pipe. The carbon dioxide can be collected by the collection box for secondary utilization.

[0008] Further, the telescopic outer tube includes a first air guide tube fixedly connected to the partition. The upper end of the first air guide tube is fixedly connected to a telescopic hose. The upper end of the telescopic hose is fixedly connected to a second air guide tube.

[0009] By adopting the above technical solution, during the fermentation process, the brewing raw materials will generate and discharge carbon dioxide gas, and the volume of the brewing raw materials will gradually decrease, resulting in the lowering of the liquid surface. Utilizing the floating property of the buoyancy plate and the vertical telescopic property of the telescopic hose, the upper port of the second air guide tube can always maintain the minimum distance from the liquid surface, facilitating the flow of carbon dioxide through the telescopic outer tube to the gas storage area.

[0010] Further, the telescopic inner tube includes an air guide tube three disposed inside the air guide tube one. The upper end of the air guide tube three is slidably connected to an air guide tube four. The lower end of the air guide tube three fixedly penetrates through the bottom of the fermentation tank and the exhaust pipe and extends downward. And the air guide tube three is provided with through holes at the gas storage area. A plurality of ribs are vertically and fixedly connected to the outer walls of the air guide tube three and the air guide tube four. The ribs are in sliding contact with the inner wall of the telescopic outer tube.

[0011] With the above technical solution, the position of the through hole is arranged below the air guide tube one. When the carbon dioxide in the fermentation area can flow downward through the gap between the telescopic outer tube and the telescopic inner tube, the air pressure in the gas storage area increases, and the air in the gas storage area flows through the through hole to the upper end of the fermentation area. By using the telescopic outer tube and the telescopic inner tube to separate into two flow channels, the downward flow of carbon dioxide and the upward flow of air will not interfere with each other, which helps the rapid flow of carbon dioxide.

[0012] Further, the regulating valve includes a compression ring slidably disposed inside the air guide tube three. A cavity in the shape of a frustum of a cone is formed in the middle of the compression ring. The regulating valve further includes a sealing plug disposed between the exhaust pipe and the air guide tube three. Two sealing rings are abutted and fitted to the lower side of the sealing plug. The two sealing rings are respectively fixedly connected to the inner wall of the exhaust pipe and the outer wall of the air guide tube three. And a plurality of pull rods are fixedly connected to the sealing plug. The pull rods pass through the through holes and are fixedly connected to the compression ring.

[0013] With the above technical solution, the small end of the compression ring is arranged upward. When nitrogen passes through the compression ring, the air inclined plane inside the compression ring contacts the air flow, and it can slide upward under the resistance until the through hole is blocked. At the same time, the sealing plug is driven by the pull rod to leave the sealing ring, so that the exhaust pipe is opened. At this time, a directional air flow channel is formed by the cooperation of the telescopic inner tube and the exhaust pipe, which helps the carbon dioxide in the gas storage area to be quickly discharged.

[0014] Further, an obliquely arranged sliding rod is slidably connected to the compression ring. One end of the sliding rod penetrates into the cavity of the compression ring and is fixedly connected with a wind guiding plate. The other end of the sliding rod passes through the compression ring and extends to the outside. A limiting groove adapted to the sliding rod is formed on the inner wall of the air guide tube three.

[0015] With the above technical solution, when nitrogen is not transported, the sealing plug abuts against the sealing ring under the action of gravity. At this time, the sliding rod slides downward and the left end is arranged in the limiting groove. At this time, the compression ring cannot slide under the action of external force, ensuring the abutting stability of the sealing plug and the sealing ring, thereby ensuring the sealing performance of the fermentation tank and preventing external gas and sundries from entering the fermentation tank.

[0016] Furthermore, environmental monitoring modules are provided on the inner wall of the gas storage area and the top of the buoyancy plate. The environmental monitoring module includes a temperature sensor, a pressure sensor, and a carbon dioxide concentration sensor, and the environmental monitoring module is in signal connection with an external nitrogen delivery device.

[0017] With the above technical solution, the temperature value, pressure value, and carbon dioxide concentration value in the fermentation area and the gas storage area can be respectively monitored in real time through the temperature sensor, pressure sensor, and carbon dioxide concentration sensor. When any one of the values reaches the set maximum threshold, the environmental monitoring module sends a signal to start the nitrogen delivery device to complete the gas replacement in the fermenter. When the temperature value, pressure value, and carbon dioxide concentration value all reach the minimum threshold, the environmental monitoring module sends a signal again to turn off the nitrogen delivery device, thereby completing the automatic monitoring and automatic replacement of the gas in the fermenter.

[0018] Furthermore, a directional exhaust mechanism is provided at the upper end of the telescopic inner tube. The directional exhaust mechanism includes two air guide covers. The lower air guide cover is fixedly connected to the upper end of the air guide pipe. A air guide pipe is fixedly connected to the upper air guide cover, and a driving fan blade is provided between the two air guide covers. The driving fan blade is rotationally connected to the air guide pipe through a coupling. The directional exhaust mechanism further includes a fixing plate fixedly connected to the upper end of the air guide pipe. A plurality of support rods are fixedly connected between the fixing plate and the upper air guide cover, and an air guide fan blade is provided between the fixing plate and the lower air guide cover. The air guide fan blade is fixedly connected to the driving fan blade.

[0019] With the above technical solution, when nitrogen passes through the driving fan blade, it can drive the driving fan blade to rotate. The driving fan blade drives the air guide fan blade to rotate, so that the air guide fan blade can drive the carbon dioxide above the liquid surface to quickly flow into the upper port of the telescopic outer tube, and the rotation of the air guide fan blade makes the carbon dioxide outside the periphery of the air guide fan blade evenly flow into the upper port of the telescopic outer tube. As the nitrogen concentration in the fermentation area increases, the carbon dioxide in the fermentation area can be completely discharged through the telescopic outer tube, avoiding a small amount of carbon dioxide above the liquid surface from affecting the microbial activity in the upper liquid surface.

[0020] Furthermore, the air guide fan blade includes a connecting ring, and a plurality of air guide blades are fixedly connected to the bottom of the connecting ring at equal intervals in a ring shape. An air guiding plate in an arc structure is fixedly provided at the outer end of the air guide blade.

[0021] With the above technical solution, the air guide blade is in a spiral structure. The outer end of the air guide blade is close to the horizontal state and close to the lower air guide cover, which can maximize the gas entry between the lower air guide cover and the fixing plate. The inner end of the air guide blade bends downward, so as to drive the gas to move downward when rotating and make it enter the telescopic outer tube. At the same time, the design of the air guiding plate can further intercept more gas, increase the gas flow efficiency, and shorten the gas replacement time in the fermenter.

[0022] Another object of the present invention is to provide a low-temperature fermentation method for Baijiu that can intelligently exhaust air based on food processing, and its purpose is as follows: To achieve the above object, the present invention provides the following technical solution: A method for using a low-temperature fermentation container for Baijiu that can intelligently exhaust air based on food processing, including the following steps: S1. Add brewing raw materials into the fermentation area, seal the fermentation tank, and the brewing raw materials start to ferment. The buoyancy plate floats on the liquid surface, making the upper port of the telescopic outer tube close to the liquid surface; S2. When the brewing raw materials ferment to produce carbon dioxide, it accumulates above the liquid surface. Utilizing the density difference between carbon dioxide and air, the carbon dioxide flows downward through the gap between the telescopic outer tube and the telescopic inner tube into the gas storage area, and the air in the gas storage area is squeezed into the upper part of the fermentation area; S3. The environmental monitoring module monitors the gas environment in the fermentation area and the gas storage area. When any one of the carbon dioxide concentration value, pressure value, and temperature value reaches the corresponding set maximum threshold, the external nitrogen delivery device delivers nitrogen into the telescopic inner tube; S4. The regulating valve closes the through-hole under the action of wind pressure and opens the exhaust pipe. An opposing air flow is formed between the inside of the telescopic inner tube and the gap between the telescopic outer tube and the telescopic inner tube, enabling the carbon dioxide in the fermentation area to enter the gas storage area and be discharged through the exhaust pipe; S5. When the carbon dioxide concentration value, pressure value, and temperature value all reach the corresponding set minimum threshold, the external nitrogen delivery device stops delivering nitrogen.

[0023] Compared with the prior art, the present invention has the following beneficial effects: 1. By arranging a gas storage area at the bottom inside the fermentation tank, and the buoyancy plate drives the upper end of the telescopic outer tube to always be above the liquid surface. Utilizing the fact that the density of carbon dioxide is greater than that of air and nitrogen, the carbon dioxide generated during the Baijiu fermentation process can directly flow downward through the upper end of the telescopic outer tube into the gas storage area, avoiding the presence of carbon dioxide above the liquid surface. At the same time, when nitrogen is delivered, a directional air flow is formed inside the fermentation tank, which can quickly discharge the carbon dioxide in the gas storage area.

[0024] 2. When nitrogen passes through the compression ring, the through-hole is closed, forming a directional air flow inside the fermentation tank. At the same time, when nitrogen passes through the driving fan blades, it drives the guide fan blades to rotate. The guide fan blades can make the carbon dioxide in the periphery flow uniformly and quickly into the upper port of the telescopic outer tube, improving the carbon dioxide flow efficiency and shortening the gas replacement time.

[0025] 3. The discharged carbon dioxide is collected through the collection box, which can reduce the carbon emissions generated during food production. At the same time, after the carbon dioxide is purified, it can be used in various industrial fields, improving the resource utilization efficiency and reducing the production cost of enterprises. Description of the Drawings

[0026] Figure 1Schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 Schematic sectional view of the fermenter structure of the present invention; Figure 3 Schematic sectional view of the telescopic outer tube, telescopic inner tube, and exhaust pipe structures of the present invention; Figure 4 Schematic anatomical view of the regulating valve structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged schematic view of the structure at position A in; Figure 6 Schematic disassembled view of the directional air guiding mechanism structure of the present invention; Figure 7 Schematic diagram of the air guiding cover and driving fan blade structures of the present invention; Figure 8 Schematic diagram of the air guiding fan blade, air guiding cover, and fixing plate structures of the present invention; Figure 9 Schematic diagram of the air guiding fan blade structure of the present invention; Figure 10 Schematic diagram of the air guiding path of the directional air guiding mechanism of the present invention.

[0027] In the figure: 1. Fermenter; 2. Partition board; 3. Fermentation area; 4. Gas storage area; 5. Telescopic outer tube; 51. First air guiding pipe; 52. Telescopic hose; 53. Second air guiding pipe; 6. Telescopic inner tube; 61. Third air guiding pipe; 62. Fourth air guiding pipe; 63. Through hole; 64. Limiting groove; 7. Buoyancy plate; 8. Exhaust pipe; 9. Regulating valve; 91. Compression ring; 92. Sealing plug; 93. Sealing ring; 94. Pull rod; 95. Slide rod; 96. Air guiding plate; 10. Directional exhaust mechanism; 101. Air guiding cover; 102. Air guiding pipe; 103. Driving fan blade; 104. Fixing plate; 105. Air guiding fan blade; 1051. Connecting ring; 1052. Air guiding blade; 1053. Air guiding plate; 11. Collection box. Detailed implementation manners

[0028] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the accompanying drawings of the specification.

[0029] Example 1, referring to Figures 1-3, which is the first embodiment of the present invention, provides a low-temperature fermentation container for liquor that can intelligently exhaust air during food processing, including a fermentation tank 1. A horizontally arranged partition plate 2 is fixedly connected to the lower part inside the fermentation tank 1. The partition plate 2 divides the cavity of the fermentation tank 1 into a fermentation area 3 and a gas storage area 4 from top to bottom. A gas guiding mechanism is vertically arranged in the middle of the partition plate 2. The gas guiding mechanism includes a telescopic outer tube 5 arranged in the fermentation area 3. The lower end of the telescopic outer tube 5 is fixedly and penetratingly connected to the partition plate 2. A buoyancy plate 7 is arranged at the upper end of the telescopic outer tube 5. The buoyancy plate 7 floats on the liquor surface so that the upper port of the telescopic outer tube 5 is close to the liquor surface. A telescopic inner tube 6 is sleeved inside the telescopic outer tube 5. Both ends of the telescopic inner tube 6 extend to the outside of the telescopic outer tube 5. The lower end of the telescopic inner tube 6 penetrates out of the fermentation tank 1 and is connected to an external nitrogen delivery device, and the telescopic inner tube 6 communicates with the gas storage area 4; the gas guiding mechanism also includes an exhaust pipe 8 fixedly connected to the bottom of the fermentation tank 1. One end of the exhaust pipe 8 communicates with the gas storage area 4, and the other end of the exhaust pipe 8 is connected to a collection box 11. The lower end of the telescopic inner tube 6 fixedly penetrates the exhaust pipe 8 and extends downward. A regulating valve 9 is jointly arranged between the exhaust pipe 8 and the telescopic inner tube 6. When nitrogen is introduced into the telescopic inner tube 6, it drives the regulating valve 9 to move upward, switching the ventilation state between the telescopic inner tube 6 and the exhaust pipe 8.

[0030] Specifically, the brewing raw materials are fermented in the fermentation area 3. The buoyancy plate 7 can make the upper end of the telescopic outer tube 5 expose above the liquid surface. The generated carbon dioxide leaves the liquid surface and flows downward through the port of the telescopic outer tube 5 under the action of gravity into the gas storage area 4. The air originally stored in the gas storage area 4 enters the upper part of the fermentation area 3 through the inside of the telescopic inner tube 6. The external nitrogen delivery device can deliver nitrogen into the fermentation tank 1 through the lower end of the telescopic inner tube 6. When the nitrogen drives the regulating valve 9 to rise, the communication state between the telescopic inner tube 6 and the gas storage area 4 is closed, and at the same time, the exhaust state of the exhaust pipe 8 is opened. The nitrogen flows upward inside the telescopic inner tube 6 and is discharged to the upper part of the fermentation area 3. The air flow in the gap between the telescopic outer tube 5 and the telescopic inner tube 6 flows downward, so as to drive the carbon dioxide in the gas storage area 4 to flow through the exhaust pipe 8 to the collection box 11. The carbon dioxide can be collected through the collection box 11 for secondary utilization.

[0031] Among them, referring to Figure 1 and Figure 2 , an inlet pipe and an outlet pipe are respectively fixedly connected to the outer wall of the fermentation tank 1 from top to bottom. The inlet pipe and the outlet pipe communicate with the upper and lower ends of the fermentation area 3. The brewing raw materials can be added into the fermentation area 3 through the inlet pipe. During fermentation, the inlet pipe and the outlet pipe are kept closed. The fermented liquor can be discharged through the outlet pipe.

[0032] It is understandable that the collection tank 11 is composed of a compressor and a gas storage tank. One end of the exhaust pipe 8 is connected to the intake port of the compressor. When the exhaust pipe 8 exhausts gas, the compressor starts, pressurizes the low-pressure carbon dioxide gas to 0.5 - 1.5 MPa and stores it in the gas storage tank. Subsequently, the carbon dioxide can be purified and reused in multiple fields, such as the manufacture of food-grade dry ice, industrial-grade welding shielding gas, fire extinguishing agents, etc.

[0033] Referring to Figures 2-3 , the telescopic outer tube 5 includes a first guide air pipe 51 fixedly connected to the partition plate 2. The upper end of the first guide air pipe 51 is fixedly connected to a telescopic hose 52, and the upper end of the telescopic hose 52 is fixedly connected to a second guide air pipe 53.

[0034] Specifically, during the fermentation process, the brewing raw materials will generate and discharge carbon dioxide gas, and the volume of the brewing raw materials will gradually decrease, resulting in a lower liquid level. By utilizing the floating property of the buoyancy plate 7 and the vertical telescopic property of the telescopic hose 52, the upper port of the second guide air pipe 53 can always maintain the minimum distance from the liquid level, facilitating the flow of carbon dioxide through the telescopic outer tube 5 into the gas storage area 4.

[0035] Referring to Figure 3 , the telescopic inner tube 6 includes a third guide air pipe 61 disposed inside the first guide air pipe 51. The upper end of the third guide air pipe 61 is slidably connected to a fourth guide air pipe 62. The lower end of the third guide air pipe 61 fixedly penetrates the bottom of the fermentation tank 1 and the exhaust pipe 8 and extends downward, and a through hole 63 is provided at the position of the third guide air pipe 61 in the gas storage area 4; a plurality of ribs are vertically fixedly connected to the outer walls of the third guide air pipe 61 and the fourth guide air pipe 62, and the ribs are in sliding contact with the inner wall of the telescopic outer tube 5.

[0036] Specifically, the position of the through hole 63 is set below the first guide air pipe 51. When the carbon dioxide in the fermentation area 3 can flow downward through the gap between the telescopic outer tube 5 and the telescopic inner tube 6, the air pressure in the gas storage area 4 increases, and the air in the gas storage area 4 flows through the through hole 63 to the upper end of the fermentation area 3. By using the telescopic outer tube 5 and the telescopic inner tube 6 to separate into two flow channels, the downward flow of carbon dioxide and the upward flow of air will not interfere with each other, which helps the rapid flow of carbon dioxide.

[0037] The arrangement of the ribs forms an annular channel between the outer wall of the telescopic inner tube 6 and the inner wall of the telescopic outer tube 5, ensuring uniform air flow.

[0038] Referring to Figures 3-4, the regulating valve 9 includes a compression ring 91 slidably disposed in the third air guide pipe 61. A cavity in the shape of a frustum of a cone is formed in the middle of the compression ring 91. The regulating valve 9 further includes a sealing plug 92 disposed between the exhaust pipe 8 and the third air guide pipe 61. Two sealing rings 93 are abutted and fitted to the lower side of the sealing plug 92. The two sealing rings 93 are respectively fixedly connected to the inner wall of the exhaust pipe 8 and the outer wall of the third air guide pipe 61. A plurality of pull rods 94 are fixedly connected to the sealing plug 92. The pull rods 94 pass through the through holes 63 and are fixedly connected to the compression ring 91.

[0039] Specifically, the small end of the compression ring 91 is arranged upward. When nitrogen passes through the compression ring 91, the air inclined plane inside the compression ring 91 contacts the air flow, and it can slide upward under the resistance until the through hole 63 is blocked. At the same time, the sealing plug 92 is driven by the pull rod 94 to leave the sealing ring 93, so that the exhaust pipe 8 is opened. At this time, a directional air flow channel is formed by the cooperation of the telescopic inner pipe 6 and the exhaust pipe 8, which helps the carbon dioxide in the gas storage area 4 to be quickly discharged.

[0040] Refer to Figures 4-5 , a sliding rod 95 is slidably connected to the compression ring 91 and is obliquely arranged. One end of the sliding rod 95 penetrates into the cavity of the compression ring 91 and is fixedly connected with a wind guide plate 96. The other end of the sliding rod 95 passes through the compression ring 91 and extends to the outside. A limiting groove 64 adapted to the sliding rod 95 is formed in the inner wall of the third air guide pipe 61.

[0041] Specifically, when nitrogen is not being transported, the sealing plug 92 abuts against the sealing ring 93 under the action of gravity. At this time, the sliding rod 95 slides downward and the left end is arranged in the limiting groove 64. At this time, the compression ring 91 cannot slide under the action of an external force, ensuring the abutting stability of the sealing plug 92 and the sealing ring 93, thereby ensuring the sealing performance of the fermentation tank 1 and preventing external gas and sundries from entering the fermentation tank 1.

[0042] During actual use, a one-way valve is arranged at the lower port of the third air guide pipe 61. The one-way valve is used for the external nitrogen to move upward to the upper end of the third air guide pipe 61. When the nitrogen transportation equipment is not working, the one-way valve automatically closes, keeping the lower port of the third air guide pipe 61 closed.

[0043] Embodiment 2, refer to Figure 2 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that environmental monitoring modules are arranged on the inner wall of the gas storage area 4 and the top of the buoyancy plate 7. The environmental monitoring module includes a temperature sensor, a pressure sensor, and a carbon dioxide concentration sensor. The environmental monitoring module is signal-connected to the external nitrogen transportation equipment.

[0044] Specifically, the temperature sensor, pressure sensor, and carbon dioxide concentration sensor can respectively monitor the temperature value, pressure value, and carbon dioxide concentration value in the fermentation area 3 and the gas storage area 4 in real time. When any one of these values reaches the set maximum threshold, the environmental monitoring module sends a signal to start the nitrogen delivery device to complete the gas replacement in the fermentation tank 1. When the temperature value, pressure value, and carbon dioxide concentration value all reach the minimum threshold, the environmental monitoring module sends a signal again to close the nitrogen delivery device, thereby completing the automatic monitoring and automatic replacement of the gas in the fermentation tank 1. The remaining structure is the same as that of Embodiment 1.

[0045] Embodiment 3, referring to Figure 2 、 Figures 6-8 , is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that a directional exhaust mechanism 10 is provided at the upper end of the telescopic inner tube 6. The directional exhaust mechanism 10 includes two air guide covers 101. The lower air guide cover 101 is fixedly connected to the upper end of the air guide pipe four 62. An air guide pipe 102 is fixedly connected to the upper air guide cover 101. A driving fan blade 103 is provided between the two air guide covers 101. The driving fan blade 103 is rotationally connected to the inner wall of the air guide pipe 102 through a coupling. The directional exhaust mechanism 10 further includes a fixing plate 104 fixedly connected to the upper end of the air guide pipe one 51. A plurality of support rods are fixedly connected between the fixing plate 104 and the upper air guide cover 101. An air guide fan blade 105 is provided between the fixing plate 104 and the lower air guide cover 101. The air guide fan blade 105 is fixedly connected to the driving fan blade 103.

[0046] Specifically, when nitrogen passes through the driving fan blade 103, it can drive the driving fan blade 103 to rotate. The driving fan blade 103 drives the air guide fan blade 105 to rotate, so that the air guide fan blade 105 can drive the carbon dioxide above the liquid surface to quickly flow into the upper port of the telescopic outer tube 5. And by using the rotation of the air guide fan blade 105, the carbon dioxide outside the circumference of the air guide fan blade 105 evenly flows into the upper port of the telescopic outer tube 5. As the nitrogen concentration in the fermentation area 3 increases, the carbon dioxide in the fermentation area 3 can be completely discharged through the telescopic outer tube 5, avoiding a small amount of carbon dioxide above the liquid surface from affecting the microbial activity in the upper liquid surface.

[0047] Referring to Figures 9-10 , the air guide fan blade 105 includes a connecting ring 1051. A plurality of air guide blades 1052 are fixedly connected to the bottom of the connecting ring 1051 at equal intervals in a ring shape. An air guiding plate 1053 in an arc structure is fixedly provided at the outer end of the air guide blade 1052.

[0048] Specifically, the air guiding vane 1052 is in a spiral structure. The outer end of the air guiding vane 1052 is close to the horizontal state and near the lower air guiding cover 101, which can maximize the retention of gas entry between the lower air guiding cover 101 and the fixing plate 104. The inner end of the air guiding vane 1052 bends downward, so as to drive the gas to move downward when rotating and make it enter the telescopic outer tube 5. At the same time, the design of the air guiding plate 1053 can further intercept more gas, increase the gas flow efficiency, and shorten the gas replacement time in the fermentation tank 1.

[0049] It can be understood that referring to Figure 2 , the outer wall of the first air duct 51 is connected to the partition plate 2 through a plurality of diagonal braces to ensure the stability of the first air duct 51. The buoyancy of the buoyancy plate 7 can overcome the weights of the upper end of the telescopic outer tube 5, the upper end of the telescopic inner tube 6, and the directional exhaust mechanism 10, so that the upper end of the second air duct 53 is always exposed above the liquid level. The rest of the structure is the same as that of Embodiment 2.

[0050] Combining Embodiments 1-3, the working principle of the present invention is as follows: Close the liquid outlet pipe, add brewing raw materials into the fermentation area 3 through the liquid inlet pipe, close the liquid inlet pipe, and the buoyancy plate 7 drives the upper port of the second air duct 53 to be exposed above the liquid level. When the brewing raw materials ferment to produce carbon dioxide, it accumulates above the liquid level. Since the density of carbon dioxide is greater than that of air, carbon dioxide flows downward through the gap between the telescopic outer tube 5 and the telescopic inner tube 6 into the gas storage area 4. The air in the gas storage area 4 enters the telescopic inner tube 6 through the through hole 63 and flows to the upper part of the fermentation area 3. The environmental monitoring module monitors the gas environment in the fermentation area 3 and the gas storage area 4. When any one of the carbon dioxide concentration value, pressure value, and temperature value reaches the corresponding set maximum threshold value, external nitrogen is transported into the telescopic inner tube 6. When the nitrogen passes through the compression ring 91, the inner air inclined surface of the compression ring 91 contacts the air flow and can slide upward under the resistance until the through hole 63 is blocked. At the same time, the sealing plug 92 is driven by the pull rod 94 to leave the sealing ring 93, so that the exhaust pipe 8 is opened. When the nitrogen passes through the driving fan blade 103, it can drive the driving fan blade 103 to rotate, and the driving fan blade 103 drives the air guiding fan blade 105 to rotate, so that the air guiding fan blade 105 can drive the carbon dioxide above the liquid level to quickly flow into the upper port of the telescopic outer tube 5. At the same time, the carbon dioxide in the gas storage area 4 flows into the collection box 11 through the exhaust pipe 8, and the carbon dioxide is collected through the collection box 11 for secondary utilization.

[0051] When the carbon dioxide concentration value, pressure value, and temperature value all reach the corresponding set minimum threshold value, the external nitrogen transport device stops transporting nitrogen, and the sealing plug 92 abuts against the sealing ring 93 under the action of gravity to close the exhaust pipe 8, ensuring the sealing of the fermentation tank 1.

[0052] Embodiment 4, referring to Figures 1-4, which is the fourth embodiment of the present invention, provides: a low-temperature fermentation method for liquor capable of intelligent exhaust during food processing, comprising the following steps: S1. Add the brewing raw materials into the fermentation area 3, close the fermentation tank 1, and the brewing raw materials start to ferment. The buoyancy plate 7 floats on the liquid surface so that the upper port of the telescopic outer tube 5 is close to the liquid surface; S2. When carbon dioxide is generated during the fermentation of the brewing raw materials and accumulates above the liquid surface, taking advantage of the density difference between carbon dioxide and air, the carbon dioxide flows downward into the gas storage area 4 through the gap between the telescopic outer tube 5 and the telescopic inner tube 6, and the air in the gas storage area 4 is squeezed into the upper part of the fermentation area 3; S3. The environmental monitoring module monitors the gas environment in the fermentation area 3 and the gas storage area 4. When any one of the carbon dioxide concentration value, pressure value, and temperature value reaches the corresponding set highest threshold, the external nitrogen delivery device delivers nitrogen into the telescopic inner tube 6; S4. The regulating valve 9 closes the through hole 63 under the action of wind pressure and opens the exhaust pipe 8. The inside of the telescopic inner tube 6 and the gap between the telescopic outer tube 5 and the telescopic inner tube 6 form an opposing air flow, so that the carbon dioxide in the fermentation area 3 enters the gas storage area 4 and is discharged into the collection box 11 through the exhaust pipe 8; S5. When the carbon dioxide concentration value, pressure value, and temperature value all reach the corresponding set lowest threshold, the external nitrogen delivery device stops delivering nitrogen.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A low-temperature liquor fermentation container with intelligent exhaust based on food processing, including a fermentation tank, characterized in that: A horizontally arranged partition is fixedly connected to the lower part of the fermentation tank, and the partition divides the fermentation tank cavity from top to bottom into a fermentation area and a gas storage area. An air guide mechanism is vertically arranged in the middle of the partition, and the air guide mechanism includes a telescopic outer tube arranged in the fermentation area, the lower end of the telescopic outer tube is fixedly connected with the partition, and a buoyancy plate is arranged at the upper end of the telescopic outer tube, and the buoyancy plate floats on the liquor liquid surface so that the upper end of the telescopic outer tube is close to the liquor liquid surface. A telescopic inner tube is sleeved inside the telescopic outer tube, and both ends of the telescopic inner tube extend to the outside of the telescopic outer tube, and the lower end of the telescopic inner tube passes through the fermentation tank and is connected to an external nitrogen delivery device, and the telescopic inner tube is in communication with the gas storage area; The air guide mechanism also includes an exhaust pipe fixedly connected to the bottom of the fermentation tank, one end of the exhaust pipe is connected to the gas storage area, and the other end of the exhaust pipe is connected to a collection box. The lower end of the telescopic inner tube is fixedly penetrated through the exhaust pipe and extends downward. A regulating valve is commonly provided between the exhaust pipe and the telescopic inner tube. When nitrogen is introduced into the telescopic inner tube, the regulating valve is driven to move upward to switch the ventilation state of the telescopic inner tube and the exhaust pipe.

2. The low-temperature fermentation container for liquor based on food processing and capable of intelligent exhaust according to claim 1 is characterized in that: The telescopic outer tube comprises an air guide tube 1 fixedly connected to the partition, a telescopic hose is fixedly connected to the upper end of the air guide tube 1, and an air guide tube 2 is fixedly connected to the upper end of the telescopic hose.

3. The low-temperature fermentation container for liquor based on food processing and capable of intelligent exhaust according to claim 2 is characterized in that: The telescopic inner tube includes an air guide tube 3 arranged in the air guide tube 1, the upper end of the air guide tube 3 is slidably connected to the air guide tube 4, the lower end of the air guide tube 3 is fixedly penetrated through the bottom of the fermentation tank and the exhaust pipe and extends downward, and the air guide tube 3 is provided with a through hole at the gas storage area; The outer walls of the third and fourth air guide tubes are both vertically fixedly connected with a plurality of ribs, and the ribs are in sliding contact with the inner wall of the telescopic outer tube.

4. The low-temperature liquor fermentation container with intelligent exhaust based on food processing according to claim 3 is characterized in that: The regulating valve includes a compression ring slidably arranged in the air guide pipe three, and a truncated cone-shaped cavity is opened in the middle of the compression ring. The regulating valve also includes a sealing plug arranged between the exhaust pipe and the air guide pipe three, and two sealing rings are abutted and fitted on the lower side of the sealing plug. The two sealing rings are respectively connected and fixed to the inner wall of the exhaust pipe and the outer wall of the air guide pipe three, and a plurality of pull rods are fixedly connected to the sealing plug, and the pull rods pass through the through holes and are connected and fixed to the compression ring.

5. The low-temperature fermentation container for liquor based on food processing and capable of intelligent exhaust according to claim 4 is characterized in that: The compression ring is slidably connected with an obliquely arranged sliding rod, one end of the sliding rod penetrates into the compression ring cavity and is fixedly connected with an air guide plate, the other end of the sliding rod passes through the compression ring and extends to the outside, and the inner wall of the air guide pipe is provided with a limiting groove adapted to the sliding rod.

6. The low-temperature fermentation container for liquor based on food processing and capable of intelligent exhaust according to claim 1 is characterized in that: The inner wall of the gas storage area and the top of the buoyancy plate are both provided with an environmental monitoring module, which includes a temperature sensor, a pressure sensor, and a carbon dioxide concentration sensor. The environmental monitoring module is connected to the external nitrogen delivery equipment signal.

7. The low-temperature fermentation container for liquor based on food processing and capable of intelligent exhaust according to claim 2 is characterized in that: A directional exhaust mechanism is provided at the upper end of the telescopic inner tube, and the directional exhaust mechanism includes two wind guide covers, the lower wind guide cover is connected and fixed to the upper end of the air guide pipe, the upper wind guide cover is fixedly connected to the air guide pipe, and a driving fan blade is provided between the two wind guide covers, and the driving fan blade is rotatably connected to the air guide pipe through a coupling shaft. The directional exhaust mechanism also includes a fixing plate fixedly connected to the upper end of the air guide pipe, a plurality of support rods are fixedly connected between the fixing plate and the upper wind guide cover, and fan blades are provided between the fixing plate and the lower wind guide cover, and the fan blades are fixedly connected to the driving fan blades.

8. The low-temperature liquor fermentation container with intelligent exhaust based on food processing according to claim 7 is characterized in that: The fan blades include a connecting ring, a plurality of air guide blades are fixedly connected to the bottom of the connecting ring in an annular shape at equal intervals, and an air guide plate with an arc-shaped structure is fixedly provided at the outer end of the air guide blade.

9. A method for low-temperature fermentation of liquor based on food processing with intelligent exhaust, which is applied to the low-temperature fermentation container of liquor based on food processing with intelligent exhaust as described in claim 6, characterized in that: The following steps are involved: Add wine-making raw materials into the fermentation area, close the fermentation tank, and the wine-making raw materials begin to ferment. The buoyancy plate floats on the liquid surface so that the upper end of the telescopic outer tube is close to the liquid surface; When the brewing raw materials are fermented and produce carbon dioxide, it accumulates above the liquid surface. By utilizing the density difference between carbon dioxide and air, carbon dioxide flows downward into the gas storage area through the gap between the telescopic outer tube and the telescopic inner tube, and the air in the gas storage area is squeezed into the top of the fermentation area. The environmental monitoring module monitors the gas environment in the fermentation area and the gas storage area. The environmental monitoring module controls the external nitrogen delivery equipment to deliver nitrogen into the telescopic inner tube to complete the gas replacement.

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