Self-pressure circulation-based wine brewing tank and biological fermentation method for brewing dendrobium wine

Abstract

The invention relates to the technical field of fermentation brewing equipment, and discloses a brewing tank based on self-pressure circulation and a biological fermentation method for brewing dendrobium wine. According to the invention, after all exchange is completed, the concentrations of strains in the culture tank and the graded exchange tanks from top to bottom are sequentially reduced; therefore, when the brewing process is formally started, the fermentation strains of the same generation can be obtained from the interiors of the culture tank and the graded exchange tanks, the influence of the generations of the fermentation strains on the brewing process is avoided, and the fermentation strains can be separated from the culture tank and the graded exchange tanks in the brewing process. Fermentation strain solutions with the continuously-increasing concentration can be gradually supplied into the main brewing tank from bottom to top in sequence, it can be effectively guaranteed that the strain concentration in the main brewing tank is kept in a relatively-constant level, and then the wine brewing stock solution in the main brewing tank can be effectively fermented.

Description

Technical Field

[0001] The invention relates to the technical field of fermentation and brewing equipment, in particular to a wine-making tank based on self-pressure circulation and a biological fermentation method for brewing dendrobium wine. Background Art

[0002] Self-pressure circulation is a way to achieve the circulation of liquid or gas by using the pressure difference inside the system. In this circulation system, no external pump or other power equipment is required to promote the circulation of fluid, but the potential energy or pressure energy of the fluid itself is relied on to maintain the circulation. Self-pressure circulation systems are usually used in those occasions where the height difference of natural water sources or the pressure difference inside the system can be utilized, such as certain types of irrigation systems, water treatment systems, and chemical circulation processes. For example, in the construction of water conservancy projects, self-pressure sprinkler irrigation systems can utilize the sprinkler irrigation system of the natural potential energy of water sources. When the water level of the water source is much higher than the ground elevation of the irrigation area, water is transported to the field by pipes, which can provide the pressure required for the normal operation of the sprinkler. In addition, self-pressure circulation can also be used for the automatic circulation of biogas digesters, by using the pressure generated by biogas fermentation to achieve automatic stirring and circulation of biogas slurry. The advantages of self-pressure circulation include energy saving, reduced equipment investment and maintenance costs, and in some cases, more stable circulation flow.

[0003] In the self-pressurized circulation system, due to the fast pressure transmission speed of the gas, the self-pressurized circulation system can achieve rapid fluid control and meet the application requirements with high real-time requirements. The application of self-pressurized circulation technology in winemaking is mainly reflected in improving fermentation efficiency and product quality. This technology uses the pressure of carbon dioxide or other gases generated during the fermentation process to achieve material circulation and mixing, thereby optimizing fermentation conditions.

[0004] The self-pressure circulation brewing tank is a fermentation equipment that uses the carbon dioxide pressure generated during the fermentation process to realize liquid circulation. This design helps to improve the fermentation efficiency, ensure the oxygen supply and temperature control during the fermentation process, while reducing energy consumption and improving product quality. In the brewing industry, the self-pressure circulation technology can be applied to the production of wine, beer and other alcoholic beverages to optimize fermentation conditions and increase production; the role of the self-pressure circulation brewing tank in the treatment of lees is mainly reflected in its ability to improve the brewing efficiency through the self-pressure circulation method, thereby indirectly reducing the amount of lees produced. In the brewing process, the self-pressure circulation brewing tank can better control the fermentation process and ensure that the yeast fully utilizes the sugar in the raw materials, which can reduce the lees produced by incomplete fermentation to a certain extent. In addition, the self-pressure circulation brewing tank is usually equipped with an efficient separation system, which can effectively separate the lees from the wine during the brewing process, reduce the loss of useful components in the lees, and improve the comprehensive utilization rate of resources.

[0005] In the current self-pressurized circulating winemaking tanks, fermentation bacteria (koji) are usually added at the initial stage. However, as the fermentation bacteria continue to multiply, fermentation bacteria of different generations are mixed in the winemaking tank. The fermentation efficiency of older generations of fermentation bacteria is lower and additional by-products will be produced, affecting the purity of the brewed wine. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a wine-making tank based on self-pressure circulation and a biological fermentation method for brewing dendrobium wine.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A brewing tank based on self-pressure circulation, comprising: a main brewing tank, a raw liquid tank, a culture tank, a graded exchange mechanism and a mixing tank, wherein the graded exchange mechanism comprises a plurality of graded exchange tanks, the raw liquid tank can contain brewing raw liquid, and the raw liquid tank can supply brewing raw liquid to the main brewing tank, the culture tank, the plurality of graded exchange tanks and the mixing tank through a pipeline; the culture tank can be connected to the graded exchange tank at the top layer, and the solution inside the culture tank can only be exchanged with the solution inside the graded exchange tank at the top layer; inside the graded exchange mechanism, from top to bottom, the raw liquid can be exchanged with the solution inside the graded exchange tank at the top layer; Under the above conditions, the fermentation bacteria content of the solution inside each of the graded exchange tanks decreases in sequence, and at the same time, exchange can occur between the solutions inside only two adjacent graded exchange tanks; each of the graded exchange tanks can input solution into the mixing tank through a pipeline, and the mixing tank is unidirectionally connected to the main brewing tank through a pipeline; inside the mixing tank, within the same time period, only the solution supplied by one of the graded exchange tanks can be mixed with the brewing stock solution supplied by the stock solution tank, and the mixed slurry produced after mixing can only be transported unidirectionally from the mixing tank to the main brewing tank.

[0009] Preferably, the bottom end of the culture tank is connected to the uppermost graded exchange tank via a culture connecting pipe, a culture valve is provided on the path of the culture connecting pipe, and the connection and isolation between the culture tank and the uppermost graded exchange tank can be controlled by opening and closing the culture valve; two adjacent graded exchange tanks are respectively connected via graded connecting pipes, and a graded valve is provided on the path of each graded connecting pipe, and the connection and isolation between two adjacent graded exchange tanks connected at both ends of the corresponding graded connecting pipe can be controlled by the graded valve.

[0010] Preferably, a barometer is provided at the top of the culture tank and each of the graded exchange tanks, and each of the barometers can respectively detect the air pressure inside the culture tank and each of the graded exchange tanks; when the air pressure inside the culture tank exceeds the set multiple of the air pressure inside the graded exchange tank of the uppermost layer, the culture valve opens, and the culture tank is connected with the graded exchange tank of the uppermost layer; when, from top to bottom, the air pressure inside the graded exchange tank of the upper layer exceeds the set multiple of the air pressure inside the graded exchange tank of the lower layer, the graded valve between the two adjacent graded exchange tanks opens, and the two adjacent graded exchange tanks are connected.

[0011] Preferably, at the same time, one and only one of the culture valve and each of the grading valves is open, and there is only one set of connections between the culture tank and the topmost grading exchange tank and between two adjacent grading exchange tanks.

[0012] Preferably, a bacteria scraping mechanism is provided inside the culture tank, and the bacteria scraping mechanism includes a fixed screw and a suspension plate, the suspension plate is sleeved on the outside of the fixed screw, and a plurality of scraping strips are provided on the outside of the suspension plate away from the fixed screw, and the side of the scraping strips away from the suspension plate is tightly attached to the inner wall of the culture tank; the suspension plate can be suspended on the internal liquid level of the culture tank, the suspension plate is threadedly connected to the fixed screw, and the suspension plate can spirally rise and fall with the rise and fall of the internal liquid level of the culture tank; each of the scraping strips is inclined, and during the spiral lifting of the suspension plate, each of the scraping strips is spirally lifted and lowered in close contact with the inner wall of the culture tank to scrape off the bacteria attached to the inner wall of the culture tank.

[0013] Preferably, during the brewing process of the main brewing tank, the solution can be input from the inside of each of the graded exchange tanks into the inside of the mixing tank from top to bottom in sequence; a reciprocating scraping mechanism is provided inside each of the graded exchange tanks, and during the liquid flow process inside each of the graded exchange tanks, the reciprocating scraping mechanism can reciprocally scrape off the bacteria attached to the inner wall of the corresponding graded exchange tank.

[0014] Preferably, the reciprocating scraping mechanism includes a transverse limiting screw and a driven impeller, the driven impeller is sleeved on the outside of the transverse limiting screw, and the transverse limiting screw and the driven impeller are threadedly connected, and a plurality of reciprocating scrapers are arranged on the outside of the driven impeller away from the transverse limiting screw, and the side of the reciprocating scraper away from the driven impeller is tightly attached to the inner wall of the grading exchange tank; during the flow of liquid inside the grading exchange tank, the driven impeller can be driven to rotate spirally around the transverse limiting screw, and each of the reciprocating scrapers can be driven to rotate spirally in close contact with the inner wall of the grading exchange tank to scrape off the bacteria attached to the inner wall of the grading exchange tank.

[0015] Preferably, a mixing agitator is provided inside the mixing tank, and the mixing agitator can mix the solution supplied by any one of the graded exchange tanks with the brewing stock liquid supplied by the stock liquid tank; the mixing tank is connected to the main brewing tank through a mixing pipe, and a liquid pump and a one-way valve are provided on the path of the mixing pipe, and the one-way valve can only be opened toward one side of the main brewing tank, and the liquid pump provides power to drive the mixed slurry produced after mixing to be transported only in one direction from the mixing tank to the main brewing tank.

[0016] Preferably, a liquid nozzle is provided inside the main brewing tank, and one end of the mixing tube away from the mixing tank is connected to the liquid nozzle; a reflux port is also provided at the bottom end of the main brewing tank, and the reflux port is connected to the liquid nozzle through a reflux pipe, and a diaphragm pump is provided on the path of the reflux pipe, and the diaphragm pump can provide power to output liquid from the reflux port along the reflux pipe to the liquid nozzle; the liquid nozzle can spray liquid in multiple directions inside the main brewing tank, and the kinetic energy of the sprayed liquid drives the flow of liquid inside the main brewing tank.

[0017] A biological fermentation method for brewing dendrobium wine, using the above-mentioned winemaking tank based on self-pressure circulation, comprises the following steps:

[0018] Sorghum, corn, and dendrobium are crushed into particles of less than 1 mm respectively, and then mixed and steamed in a mass ratio of sorghum: corn: dendrobium: water of 10:9:1:1000, and mixed to obtain brewing stock solution;

[0019] The brewing liquid is stored in the liquid tank, and the temperature of the brewing liquid is kept at 30℃;

[0020] 80% of the brewing stock solution of each volume is supplied from the stock solution tank to the culture tank and several graded exchange tanks;

[0021] Adding koji into the brewing stock solution in the culture tank to start the fermentation bacteria breeding process in the culture tank;

[0022] After the fermentation bacteria breeding process in the culture tank has been carried out for a certain period of time, the solution in the culture tank is exchanged with the solution in the uppermost graded exchange tank, and the solution in two adjacent graded exchange tanks is exchanged in sequence from top to bottom;

[0023] Supplying a given percentage of brewing stock liquid of the volume of the main brewing tank from the inside of the stock liquid tank to the inside of the main brewing tank;

[0024] 45% of the brewing stock solution of the volume of the mixing tank is supplied from the stock solution tank to the mixing tank, and 45% of the solution of the volume of the mixing tank is supplied from the bottom layer of the graded exchange tank to the mixing tank. After mixing in the mixing tank, the mixed slurry produced after mixing is injected into the main brewing tank;

[0025] Every 2 hours, a given percentage of brewing stock solution of the volume of the main brewing tank is supplied from the stock solution tank to the main brewing tank, 45% of brewing stock solution of the volume of the mixing tank is supplied from the stock solution tank to the mixing tank, and 45% of the solution of the volume of the mixing tank is supplied from the grading exchange tank of the upper layer to the mixing tank. After mixing in the mixing tank, the mixed slurry produced after mixing is injected into the main brewing tank;

[0026] Until the solution provided by the uppermost graded exchange tank is mixed and the mixed slurry produced is injected into the main brewing tank, at which time the total volume of the main brewing tank is occupied no more than 90%;

[0027] After another 2 hours of fermentation, the fermentation liquid is discharged from the main brewing tank to complete the brewing of Dendrobium wine in the main brewing tank.

[0028] Compared with the prior art, the present invention provides a wine-making tank based on self-pressure circulation and a biological fermentation method for brewing dendrobium wine, which has the following beneficial effects:

[0029] 1. This kind of brewing tank based on self-pressure circulation, after the fermentation bacteria breeding process in the culture tank has been going on for a certain period of time, starts to exchange the solution in the culture tank with the solution in the topmost graded exchange tank, and the solution in two adjacent graded exchange tanks from top to bottom in turn; so that after all the exchanges are completed, the bacteria concentration in the culture tank and each graded exchange tank from top to bottom decreases in turn; so that when the brewing process officially starts, the fermentation bacteria of the same generation can be obtained from the culture tank and each graded exchange tank, avoiding the influence of the generation of the fermentation bacteria on the brewing process, and can gradually supply the fermentation bacteria solution with increasing concentration to the main brewing tank from bottom to top during the brewing process, which can effectively ensure that the bacteria concentration in the main brewing tank is maintained at a relatively constant level, and then can effectively ferment the brewing stock in the main brewing tank.

[0030] 2. This kind of brewing tank based on self-pressure circulation, through the setting of culture tanks and various graded exchange tanks, during the fermentation process inside the main brewing tank, the fermentation bacteria are still cultivated in the culture tanks and various graded exchange tanks, so that each time the bacterial solution is provided inside each graded exchange tank, the bacterial solution reaches the required concentration, effectively ensuring the fermentation efficiency inside the main brewing tank.

[0031] 3. In the brewing tank based on self-pressure circulation, the suspension plate can be suspended on the internal liquid surface of the culture tank, and the suspension plate is threadedly connected to the fixed screw. The suspension plate can spirally rise and fall with the rise and fall of the internal liquid surface of the culture tank; each scraper is inclined, and during the spiral rise and fall of the suspension plate, each scraper is spirally lifted and lifted close to the inner wall of the culture tank to scrape off the bacteria attached to the inner wall of the culture tank; during the flow of liquid inside the graded exchange tank, the driven impeller can be driven to spirally rotate around the transverse limiting screw, and each reciprocating scraper can be driven to spirally rotate close to the inner wall of the graded exchange tank to scrape off the bacteria attached to the inner wall of the graded exchange tank; thereby avoiding the accumulation of bacteria on the inner wall of the culture tank and each graded exchange tank, thereby ensuring the dispersion of bacteria inside the culture tank and each graded exchange tank, and effectively avoiding the residual bacteria in the culture tank and each graded exchange tank.

[0032] 4. This brewing tank based on self-pressure circulation, through the action of the liquid nozzle and the diaphragm pump, can provide the power to output liquid from the reflux port along the reflux pipe to the liquid nozzle, and the liquid pump provides power to drive the mixed slurry generated after mixing to flow to the liquid nozzle, and then can spray the liquid from the liquid nozzle, and can spray the liquid in multiple directions inside the main brewing tank through the liquid nozzle. The kinetic energy of the sprayed liquid drives the liquid flow inside the main brewing tank, while reducing mechanical disturbances to the fermentation process inside the main brewing tank and the accumulation of bacteria, it can ensure the relative uniformity of the inside of the main brewing tank and ensure the fermentation efficiency inside the main brewing tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is one of the three-dimensional structural schematic diagrams of a winemaking tank based on self-pressure circulation according to the present invention;

[0034] Figure 2 This is one of the three-dimensional structural schematic diagrams of a winemaking tank based on self-pressure circulation according to the present invention;

[0035] Figure 3 This is a schematic diagram of the pipeline connection of a winemaking tank based on self-pressure circulation according to the present invention;

[0036] Figure 4 It is a partial three-dimensional structural schematic diagram of a winemaking tank based on self-pressure circulation of the present invention;

[0037] Figure 5 This is a schematic diagram of the internal structure of a main brewing tank of a brewing tank based on self-pressure circulation of the present invention;

[0038] Figure 6 It is a schematic diagram of the three-dimensional structure of a culture tank of a winemaking tank based on self-pressure circulation of the present invention;

[0039] Figure 7 This is a schematic diagram of the internal structure of a culture tank of a winemaking tank based on self-pressure circulation according to the present invention;

[0040] Figure 8 It is a three-dimensional structural schematic diagram of a grading exchange mechanism of a brewing tank based on self-pressure circulation of the present invention;

[0041] Fig. 9 The diagram is a schematic diagram of the internal structure of a graded exchange tank of a brewing tank based on self-pressure circulation according to the present invention.

[0042] In the figure: 1. main brewing tank; 11. liquid nozzle; 12. reflux port; 13. reflux pipe; 14. diaphragm pump; 2. raw liquid tank; 3. culture tank; 31. culture connecting pipe; 32. culture valve; 33. bacteria scraping mechanism; 331. fixed screw; 332. suspension plate; 333. scraper; 4. graded exchange mechanism; 41. graded exchange tank; 42. graded connecting pipe; 43. graded valve; 44. reciprocating scraping mechanism; 441. transverse limit screw; 442. driven impeller; 443. reciprocating scraper; 5. mixing tank; 51. mixing agitator; 52. mixing pipe; 53. liquid pump; 54. one-way valve. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] As introduced in the background technology, in order to solve the deficiencies existing in the prior art and the above technical problems, the present application proposes a wine-making tank based on self-pressure circulation and a biological fermentation method for brewing dendrobium wine.

[0045] Embodiment 1:

[0046] Please refer to Figure 1-Figure 9A brewing tank based on self-pressure circulation comprises: a main brewing tank 1, a raw liquid tank 2, a culture tank 3, a graded exchange mechanism 4 and a mixing tank 5, wherein the graded exchange mechanism 4 comprises a plurality of graded exchange tanks 41, the raw liquid tank 2 can contain brewing raw liquid, and the raw liquid tank 2 can supply brewing raw liquid to the main brewing tank 1, the culture tank 3, the plurality of graded exchange tanks 41 and the mixing tank 5 through pipelines; the culture tank 3 can be connected with the uppermost graded exchange tank 41, and the solution in the culture tank 3 can only be exchanged with the solution in the uppermost graded exchange tank 41; inside the graded exchange mechanism 4, From top to bottom, the fermentation bacteria content of the solution inside each graded exchange tank 41 decreases successively, and at the same time, exchange can occur between the solutions inside two and only two adjacent graded exchange tanks 41; each graded exchange tank 41 can input solution into the mixing tank 5 through a pipeline, and the mixing tank 5 is unidirectionally connected to the main brewing tank 1 through a pipeline; inside the mixing tank 5, within the same time period, only the solution supplied by one graded exchange tank 41 can be mixed with the brewing stock solution supplied by the stock solution tank 2, and the mixed slurry produced after mixing can only be transported unidirectionally from the mixing tank 5 to the main brewing tank 1.

[0047] During specific use, firstly, according to the brewing process, liquid brewing stock solution is prepared, and then the brewing stock solution is stored in the stock solution tank 2, and the temperature inside the stock solution tank 2 is kept constant, and then the brewing stock solution is first supplied from the stock solution tank 2 to the culture tank 3 and several graded exchange tanks 41 respectively; then, koji is added to the brewing stock solution in the culture tank 3 to start the fermentation bacteria breeding process in the culture tank 3, and after the fermentation bacteria breeding process in the culture tank 3 has been carried out for a certain period of time, from top to bottom, the exchange between the solution in the culture tank 3 and the solution in the uppermost graded exchange tank 41, and the exchange between the solutions in the two adjacent graded exchange tanks 41 are started in turn. exchange; so that after all the exchanges are completed, the bacterial concentrations in the culture tank 3 and each graded exchange tank 41 from top to bottom decrease successively; so that when the brewing process officially starts, the fermentation bacteria of the same generation can be obtained from the culture tank 3 and each graded exchange tank 41, avoiding the influence of the generation of the fermentation bacteria on the brewing process, and during the brewing process, the fermentation bacteria solution with increasing concentration can be gradually supplied to the main brewing tank 1 from bottom to top, which can effectively ensure that the bacterial concentration in the main brewing tank 1 is maintained at a relatively constant level, and then the brewing stock in the main brewing tank 1 can be effectively fermented.

[0048] The bottom end of the culture tank 3 is connected to the uppermost graded exchange tank 41 via a culture connecting pipe 31, and a culture valve 32 is provided on the path of the culture connecting pipe 31. The opening and closing of the culture valve 32 can control the connection and isolation between the culture tank 3 and the uppermost graded exchange tank 41; two adjacent graded exchange tanks 41 are connected via graded connecting pipes 42, respectively, and a graded valve 43 is provided on the path of each graded connecting pipe 42. The connection and isolation between two adjacent graded exchange tanks 41 connected at both ends of the corresponding graded connecting pipe 42 can be controlled by the graded valve 43.

[0049] A barometer is provided at the top of the culture tank 3 and each graded exchange tank 41, and each barometer can respectively detect the air pressure inside the culture tank 3 and each graded exchange tank 41; when the air pressure inside the culture tank 3 exceeds the set multiple of the air pressure inside the graded exchange tank 41 of the uppermost layer, the culture valve 32 opens, and the culture tank 3 is connected with the graded exchange tank 41 of the uppermost layer; when, from top to bottom, the air pressure inside the graded exchange tank 41 of the upper layer exceeds the set multiple of the air pressure inside the graded exchange tank 41 of the lower layer, the graded valve 43 between the two adjacent graded exchange tanks 41 opens, and the two adjacent graded exchange tanks 41 are connected.

[0050] At the same time, only one of the culture valve 32 and each grading valve 43 is open, and there is only one set of connections between the culture tank 3 and the top grading exchange tank 41 and between two adjacent grading exchange tanks 41.

[0051] In specific use, since a large amount of gas is generated during the reproduction process of the fermentation bacteria, the reproduction process of the fermentation bacteria can be determined by the change value of the gas. Therefore, in actual use, when the air pressure inside the culture tank 3 exceeds the set multiple of the air pressure inside the uppermost graded exchange tank 41, the culture valve 32 is opened, and the culture tank 3 is connected to the uppermost graded exchange tank 41 (in this embodiment, the value measured by the barometer is the difference between the air pressure and the external temperature, so that the multiple of the reproduction bacteria can be determined by the multiple, and the multiple in this embodiment is 2 times), and in specific use, other methods such as sampling can be used to determine the bacterial content inside the culture tank 3 and each graded exchange tank 41, so as to perform the exchange process according to the bacterial content;

[0052] When the air pressure inside the graded exchange tank 41 of the upper layer exceeds the set multiple of the air pressure inside the graded exchange tank 41 of the lower layer from top to bottom, the graded valve 43 between the two adjacent graded exchange tanks 41 is opened, and the two adjacent graded exchange tanks 41 are connected, so that through the setting of the culture tank 3 and each graded exchange tank 41, during the fermentation process inside the main brewing tank 1, the fermentation bacteria can still be cultured in the culture tank 3 and each graded exchange tank 41, so that each time the bacterial solution is provided inside each graded exchange tank 41, the bacterial solution has reached the required concentration, thereby effectively ensuring the fermentation efficiency inside the main brewing tank 1.

[0053] Embodiment 2:

[0054] Please refer to Figure 1-Figure 9 The difference from the above embodiment is that a bacterial scraping mechanism 33 is arranged inside the culture tank 3, and the bacterial scraping mechanism 33 includes a fixed screw 331 and a suspension plate 332. The suspension plate 332 is sleeved on the outside of the fixed screw 331, and a plurality of scraping strips 333 are arranged on the outside of the suspension plate 332 away from the fixed screw 331, and the side of the scraping strips 333 away from the suspension plate 332 is tightly attached to the inner wall of the culture tank 3; the suspension plate 332 can be suspended on the internal liquid surface of the culture tank 3, and the suspension plate 332 is threadedly connected to the fixed screw 331, and the suspension plate 332 can be spirally lifted and lowered as the internal liquid surface of the culture tank 3 rises and falls; each scraping strip 333 is tilted, and in the process of spirally lifting the suspension plate 332, each scraping strip 333 is spirally lifted and lowered in close contact with the inner wall of the culture tank 3 to scrape off the bacterial bodies attached to the inner wall of the culture tank 3.

[0055] During the brewing process of the main brewing tank 1, the solution can be input from each grading exchange tank 41 to the mixing tank 5 in sequence from top to bottom; a reciprocating scraping mechanism 44 is provided inside each grading exchange tank 41, and during the liquid flow process inside each grading exchange tank 41, the reciprocating scraping mechanism 44 can reciprocatingly scrape off the bacteria attached to the inner wall of the corresponding grading exchange tank 41.

[0056] The reciprocating scraping mechanism 44 includes a transverse limiting screw 441 and a driven impeller 442. The driven impeller 442 is sleeved on the outside of the transverse limiting screw 441, and the transverse limiting screw 441 and the driven impeller 442 are threadedly connected. A plurality of reciprocating scrapers 443 are arranged on the outside of the driven impeller 442 away from the transverse limiting screw 441. The side of the reciprocating scraper 443 away from the driven impeller 442 is tightly attached to the inner wall of the grading exchange tank 41. During the flow of liquid inside the grading exchange tank 41, the driven impeller 442 can be driven to rotate spirally around the transverse limiting screw 441, and each reciprocating scraper 443 can be driven to rotate spirally close to the inner wall of the grading exchange tank 41 to scrape off the bacteria attached to the inner wall of the grading exchange tank 41.

[0057] Therefore, when in use, the suspension plate 332 can be suspended on the internal liquid surface of the culture tank 3, and the suspension plate 332 is threadedly connected to the fixed screw 331, so that the suspension plate 332 can be spirally lifted and lowered along with the rise and fall of the internal liquid surface of the culture tank 3; each scraper bar 333 is arranged obliquely, and during the spiral lifting of the suspension plate 332, each scraper bar 333 is spirally lifted and lowered close to the inner wall of the culture tank 3 to scrape off the bacteria attached to the inner wall of the culture tank 3; during the liquid flow inside the graded exchange tank 41, the driven impeller 442 can be driven to rotate around the lateral limit screw 44 1 spirally rotates, driving each reciprocating scraper 443 to spirally rotate close to the inner wall of the graded exchange tank 41, scraping off the bacteria attached to the inner wall of the graded exchange tank 41; thereby avoiding the accumulation of bacteria on the inner wall of the culture tank 3 and each graded exchange tank 41, ensuring the dispersion of bacteria inside the culture tank 3 and each graded exchange tank 41, and effectively avoiding the residual bacteria in the culture tank 3 and each graded exchange tank 41, ensuring that the generations of the culture tank 3 and each graded exchange tank 41 are similar, and avoiding the generation of fermented bacteria affecting the brewing process.

[0058] Embodiment three:

[0059] Please refer to Figure 1-Figure 9 The difference from the above embodiment is that a mixing agitator 51 is arranged inside the mixing tank 5, and the mixing agitator 51 can mix the solution supplied by any grading exchange tank 41 with the brewing stock liquid supplied by the stock liquid tank 2; the mixing tank 5 is connected to the main brewing tank 1 through a mixing pipe 52, and a liquid pump 53 and a one-way valve 54 are arranged on the path of the mixing pipe 52, and the one-way valve 54 can only be opened toward one side of the main brewing tank 1, and the liquid pump 53 provides power to drive the mixed slurry produced after mixing to be transported only from the mixing tank 5 to the main brewing tank 1 in one direction.

[0060] A liquid nozzle 11 is arranged inside the main brewing tank 1, and one end of the mixing tube 52 away from the mixing tank 5 is connected to the liquid nozzle 11; a reflux port 12 is also arranged at the bottom end of the main brewing tank 1, and the reflux port 12 is connected to the liquid nozzle 11 through a reflux pipe 13, and a diaphragm pump 14 is arranged on the path of the reflux pipe 13, and the diaphragm pump 14 can provide power to output liquid from the reflux port 12 along the reflux pipe 13 to the liquid nozzle 11; the liquid nozzle 11 can spray liquid in multiple directions inside the main brewing tank 1, and the kinetic energy of the sprayed liquid drives the liquid flow inside the main brewing tank 1.

[0061] Therefore, when in use, the liquid nozzle 11 can be used, and the diaphragm pump 14 can provide power to output liquid from the reflux port 12 along the reflux pipe 13 to the liquid nozzle 11. The liquid pump 53 provides power to drive the mixed slurry generated after mixing to flow to the liquid nozzle 11, and then the liquid can be sprayed from the liquid nozzle 11. The liquid can be sprayed in multiple directions inside the main brewing tank 1 through the liquid nozzle 11. The kinetic energy of the sprayed liquid drives the flow of liquid inside the main brewing tank 1. While reducing mechanical disturbances to the fermentation process inside the main brewing tank 1 and the accumulation of bacteria, the relative uniformity inside the main brewing tank 1 can be ensured, and the fermentation efficiency inside the main brewing tank 1 can be ensured.

[0062] Embodiment 4:

[0063] A biological fermentation method for brewing dendrobium wine, using a winemaking tank based on autogenous pressure circulation according to any one of the above embodiments, comprises the following steps:

[0064] Sorghum, corn, and dendrobium are crushed into particles of less than 1 mm respectively, and then mixed and steamed in a mass ratio of sorghum: corn: dendrobium: water of 10:9:1:1000, and mixed to obtain brewing stock solution;

[0065] The brewing stock solution is stored in the stock solution tank 2, and the temperature of the brewing stock solution is maintained at 30°C;

[0066] 80% of the brewing stock solution of each volume is supplied from the stock solution tank 2 to the culture tank 3 and a plurality of grading exchange tanks 41 (in this embodiment, the grading exchange mechanism 4 includes four grading exchange tanks 41);

[0067] Adding koji into the brewing stock solution in the culture tank 3 to start the fermentation bacteria breeding process in the culture tank 3;

[0068] After the fermentation bacteria breeding process in the culture tank 3 has been carried out for a certain period of time, the solution in the culture tank 3 is exchanged with the solution in the uppermost graded exchange tank 41, and the solution in two adjacent graded exchange tanks 41 is exchanged with each other in sequence from top to bottom.

[0069] Supplying a given percentage (in this embodiment, the given percentage is 20%) of brewing stock liquid of the volume of the main brewing tank 1 from the inside of the stock liquid tank 2 to the inside of the main brewing tank 1;

[0070] 45% of the brewing stock solution of the volume of the mixing tank 5 is supplied from the stock solution tank 2 to the mixing tank 5, and 45% of the solution of the volume of the mixing tank 5 is supplied from the bottom layer of the graded exchange tank 41 to the mixing tank 5. After mixing in the mixing tank 5, the mixed slurry produced after mixing is injected into the main brewing tank 1;

[0071] Every 2 hours, a given percentage of brewing stock solution of the volume of the main brewing tank 1 is supplied from the stock solution tank 2 to the main brewing tank 1, 45% of brewing stock solution of the volume of the mixing tank 5 is supplied from the stock solution tank 2 to the mixing tank 5, and 45% of the solution of the volume of the mixing tank 5 is supplied from the grading exchange tank 41 of the upper layer to the mixing tank 5. After mixing in the mixing tank 5, the mixed slurry produced after mixing is injected into the main brewing tank 1;

[0072] Until the solution provided by the uppermost graded exchange tank 41 is mixed and the resulting mixed slurry is injected into the main brewing tank 1, at which time the total volume of the main brewing tank 1 is occupied by no more than 90%;

[0073] After another 2 hours of fermentation, the fermented liquid is discharged from the main brewing tank 1 to complete the brewing of the dendrobium wine in the main brewing tank 1.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brewing tank based on self-pressure circulation, characterized in that: include: A main brewing tank (1), a raw liquid tank (2), a culture tank (3), a grading exchange mechanism (4) and a mixing tank (5), wherein the grading exchange mechanism (4) comprises a plurality of grading exchange tanks (41), the raw liquid tank (2) can contain brewing raw liquid, and the raw liquid tank (2) can supply brewing raw liquid to the main brewing tank (1), the culture tank (3), the plurality of grading exchange tanks (41) and the mixing tank (5) through pipelines; The culture tank (3) can be in communication with the uppermost graded exchange tank (41), and the solution inside the culture tank (3) can only be exchanged with the solution inside the uppermost graded exchange tank (41); Inside the graded exchange mechanism (4), from top to bottom, the fermentation bacteria content of the solution inside each graded exchange tank (41) decreases in sequence, and at the same time, only the solutions inside two adjacent graded exchange tanks (41) can be exchanged; Each of the graded exchange tanks (41) can input a solution into the mixing tank (5) through a pipeline, and the mixing tank (5) is in one-way communication with the main brewing tank (1) through a pipeline; Inside the mixing tank (5), only the solution supplied by the graded exchange tank (41) can be mixed with the brewing stock solution supplied by the stock solution tank (2) within the same time period, and the mixed slurry produced after mixing can only be transported in one direction from the mixing tank (5) to the main brewing tank (1).

2. A brewing tank based on self-pressure circulation according to claim 1, characterized in that: The bottom end of the culture tank (3) is connected to the uppermost graded exchange tank (41) via a culture connecting pipe (31), and a culture valve (32) is provided on the path of the culture connecting pipe (31). The opening and closing of the culture valve (32) can control the connection and isolation between the culture tank (3) and the uppermost graded exchange tank (41); Two adjacent graded exchange tanks (41) are connected to each other through a graded connecting pipe (42), and a graded valve (43) is provided on the path of each graded connecting pipe (42). The graded valve (43) can control the communication and isolation between the two adjacent graded exchange tanks (41) connected at both ends of the corresponding graded connecting pipe (42).

3. A brewing tank based on self-pressure circulation according to claim 2, characterized in that: The top of the culture tank (3) and each of the graded exchange tanks (41) is provided with a barometer, and each barometer can respectively detect the air pressure inside the culture tank (3) and each of the graded exchange tanks (41); When the air pressure inside the culture tank (3) exceeds the set multiple of the air pressure inside the uppermost graded exchange tank (41), the culture valve (32) opens, and the culture tank (3) is connected to the uppermost graded exchange tank (41); When, from top to bottom, the air pressure inside the graded exchange tank (41) of the upper layer exceeds the set multiple of the air pressure inside the graded exchange tank (41) of the lower layer, the graded valve (43) between the two adjacent graded exchange tanks (41) is opened, and the two adjacent graded exchange tanks (41) are connected.

4. A brewing tank based on self-pressure circulation according to claim 3, characterized in that: At the same time, only one of the culture valve (32) and each of the grading valves (43) is open, and there is only one set of connections between the culture tank (3) and the topmost grading exchange tank (41) and between two adjacent grading exchange tanks (41).

5. The brewing tank based on self-pressure circulation according to claim 1 is characterized in that: A bacterial scraping mechanism (33) is arranged inside the culture tank (3), and the bacterial scraping mechanism (33) comprises a fixed screw (331) and a suspension plate (332), wherein the suspension plate (332) is sleeved on the outside of the fixed screw (331), and a plurality of scraping strips (333) are arranged on the outside of the suspension plate (332) away from the fixed screw (331), and the side of the scraping strips (333) away from the suspension plate (332) is in close contact with the inner wall of the culture tank (3); The suspension plate (332) can be suspended on the internal liquid surface of the culture tank (3), the suspension plate (332) is threadedly connected to the fixed screw (331), and the suspension plate (332) can be spirally raised and lowered as the internal liquid surface of the culture tank (3) rises and falls; Each of the scraping bars (333) is arranged at an angle. During the process of the suspension plate (332) spirally ascending and descending, each of the scraping bars (333) spirally ascends and descends closely against the inner wall of the culture tank (3) to scrape off the bacteria attached to the inner wall of the culture tank (3).

6. The brewing tank based on self-pressure circulation according to claim 1 is characterized in that: During the brewing process of the main brewing tank (1), solutions can be sequentially input from the inside of each of the graded exchange tanks (41) into the inside of the mixing tank (5) from top to bottom; A reciprocating scraping mechanism (44) is provided inside each of the grading exchange tanks (41). During the flow of liquid inside each of the grading exchange tanks (41), the reciprocating scraping mechanism (44) can reciprocatingly scrape off the bacteria attached to the inner wall of the corresponding grading exchange tank (41).

7. The brewing tank based on self-pressure circulation according to claim 6 is characterized in that: The reciprocating scraping mechanism (44) comprises a transverse limiting screw (441) and a driven impeller (442), wherein the driven impeller (442) is sleeved on the outside of the transverse limiting screw (441), and the transverse limiting screw (441) and the driven impeller (442) are threadedly connected, and a plurality of reciprocating scraping plates (443) are arranged on the outside of the driven impeller (442) away from the transverse limiting screw (441), and the side surfaces of the reciprocating scraping plates (443) away from the driven impeller (442) are in close contact with the inner wall of the graded exchange tank (41); During the flow of liquid inside the grading exchange tank (41), the driven impeller (442) can be driven to rotate spirally around the transverse limiting screw (441), driving each of the reciprocating scrapers (443) to rotate spirally close to the inner wall of the grading exchange tank (41), thereby scraping off the bacteria attached to the inner wall of the grading exchange tank (41).

8. The brewing tank based on self-pressure circulation according to claim 1 is characterized in that: The mixing tank (5) is provided with a mixing agitator (51) inside, and the mixing agitator (51) can mix the solution supplied from any one of the grading exchange tanks (41) with the brewing stock solution supplied from the stock solution tank (2); The mixing tank (5) is connected to the main brewing tank (1) via a mixing pipe (52). A liquid pump (53) and a one-way valve (54) are provided on the path of the mixing pipe (52). The one-way valve (54) can only be opened toward one side of the main brewing tank (1). The liquid pump (53) provides power to drive the mixed slurry produced after mixing to be transported only in one direction from the mixing tank (5) to the main brewing tank (1).

9. The brewing tank based on self-pressure circulation according to claim 8, characterized in that: A liquid spray head (11) is arranged inside the main brewing tank (1), and an end of the mixing pipe (52) away from the mixing tank (5) is connected to the liquid spray head (11); The bottom end of the main brewing tank (1) is also provided with a reflux port (12), the reflux port (12) is connected to the liquid spray head (11) through a reflux pipe (13), a diaphragm pump (14) is provided on the path of the reflux pipe (13), and the diaphragm pump (14) can provide power to output liquid from the reflux port (12) along the reflux pipe (13) to the liquid spray head (11); The liquid spray head (11) is capable of spraying liquid in multiple directions inside the main brewing tank (1), and the kinetic energy of the sprayed liquid drives the liquid inside the main brewing tank (1) to flow.

10. A biological fermentation method for brewing dendrobium wine, using a winemaking tank based on autogenous pressure circulation according to any one of claims 1 to 9, characterized in that: The steps include: Sorghum, corn, and dendrobium are crushed into particles of less than 1 mm respectively, and then mixed and steamed in a mass ratio of sorghum: corn: dendrobium: water of 10:9:1:1000, and mixed to obtain brewing stock solution; The brewing stock solution is stored in the stock solution tank (2) and the temperature of the brewing stock solution is maintained at 30°C; 80% of the brewing stock solution of each volume is supplied from the inside of the stock solution tank (2) to the inside of the culture tank (3) and a plurality of graded exchange tanks (41); Adding koji into the brewing stock solution in the culture tank (3) to start the fermentation bacteria breeding process in the culture tank (3); After the fermentation bacteria breeding process in the culture tank (3) has been carried out for a certain period of time, the solution in the culture tank (3) is exchanged with the solution in the uppermost graded exchange tank (41), and the solution in two adjacent graded exchange tanks (41) are exchanged in sequence from top to bottom; Supplying brewing stock liquid of a given percentage of the volume of the main brewing tank (1) from the inside of the stock liquid tank (2) to the inside of the main brewing tank (1); 45% of the brewing stock solution of the volume of the mixing tank (5) is supplied from the inside of the stock solution tank (2) to the inside of the mixing tank (5), and 45% of the solution of the volume of the mixing tank (5) is supplied from the inside of the lowest level graded exchange tank (41) to the inside of the mixing tank (5), and after mixing in the mixing tank (5), the mixed slurry produced after mixing is injected into the inside of the main brewing tank (1); Every 2 hours, a given percentage of brewing stock solution of the volume of the main brewing tank (1) is supplied from the stock solution tank (2) to the main brewing tank (1), 45% of brewing stock solution of the volume of the mixing tank (5) is supplied from the stock solution tank (2) to the mixing tank (5), and 45% of the solution of the volume of the mixing tank (5) is supplied from the upper layer of the graded exchange tank (41) to the mixing tank (5), and after mixing in the mixing tank (5), the mixed slurry produced after mixing is injected into the main brewing tank (1); Until the solution provided by the uppermost graded exchange tank (41) is mixed and the resulting mixed slurry is injected into the main brewing tank (1), at which time the total volume of the main brewing tank (1) is occupied by no more than 90%; After fermenting for another 2 hours, the fermented liquid is discharged from the main brewing tank (1), completing the brewing of dendrobium wine in the main brewing tank (1).

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