Ethanol production fermentation equipment

Abstract

The utility model belongs to the technical field of ethanol production, particularly relates to ethanol production fermentation equipment, and provides the following scheme aiming at the problem that the yield and the quality stability of fermentation products are easily influenced due to the lack of fermentation residues on the inner wall of a fermentation tank in the conventional device. The top of the fermentation tank main body is communicated with a feeding pipe and an exhaust pipe, and the surface of the feeding pipe is in threaded connection with a matched sealing cover; the utility model has the beneficial effects that the scraping rod is promoted to slide on the inner side wall of the fermentation tank main body in an attached manner, so that attached materials can be scraped off and return to the fermentation tank main body again, residues of the materials on the tank wall can be reduced to the greatest extent, the tank wall can be kept clean, and fermentation raw materials can be fully utilized; and the production cost can be effectively reduced by reducing material residues, and meanwhile, the product yield is ensured, so that heat can be more efficiently transferred into fermentation liquor through the tank wall or dissipated from the fermentation liquor, and the accuracy of the fermentation temperature can be better controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of fermentation equipment, specifically a kind of ethanol production fermentation equipment, belong to ethanol production technical field. BACKGROUND

[0002] Ethanol fermentation refers to the process of converting glucose into pyruvic acid through glycolysis by microorganisms under anaerobic conditions, and pyruvic acid is further decarboxylated to form acetaldehyde, which is finally reduced to ethanol. During the fermentation process, the temperature requirement is relatively strict.

[0003] In the prior art, as disclosed in the announcement No. CN202223089513.3, a fermentation tank for ethanol production is provided. Then, a certain proportion of hot gas and cold gas is introduced into the tank body through the gas inlet mechanism. By adjusting the proportion of hot gas and cold gas introduced, the temperature inside the tank body can be adjusted. Then, the stirring mechanism can stir the material to accelerate the fermentation speed of the material. The above-mentioned prior art solution has the following disadvantages: when using the above-mentioned ethanol production fermentation equipment, a large amount of fermentation residues, including microbial cells, unmetabolized nutrients, metabolic products, and some impurities, will inevitably adhere to the inner wall of the fermentation tank during the fermentation process. The residual substances will become a source of pollution in the next batch of fermentation process. The residual microbial cells may grow and reproduce again under suitable conditions, competing with the newly inoculated superior strains for nutrients and living space, leading to loss of control of the fermentation process and affecting the yield and quality stability of the fermentation product. In addition, the long-term accumulation of residual substances on the inner wall of the fermentation tank will form a fouling layer. These fouling not only reduces the effective volume of the fermentation tank and reduces the batch size of each fermentation, directly affecting the production efficiency, but also changes the heat transfer characteristics inside the fermentation tank. The change in heat transfer performance will lead to uneven heat transfer, and local temperature that is too high or too low may inhibit the fermentation activity of microorganisms, further reducing the fermentation efficiency, prolonging the fermentation period, and increasing the production cost. SUMMARY

[0004] The purpose of the present utility model is to solve the above-mentioned problems of lack of fermentation residues on the inner wall of the fermentation tank, which easily affects the yield and quality stability of the fermentation product, and to provide an ethanol production fermentation equipment.

[0005] The present utility model achieves the above-mentioned purposes through the following technical solutions: an ethanol production fermentation equipment, comprising a fermentation tank main body, a feed pipe and an exhaust pipe are communicated at the top of the fermentation tank main body, a sealing cover adapted is threadedly connected to the surface of the feed pipe, a discharge pipe is communicated at the bottom of the fermentation tank main body, and a valve for controlling opening and closing is installed on the surface of the discharge pipe.

[0006] The transmission shaft is provided inside the fermentation tank body, the driving motor is mounted on the surface of the fermentation tank body, one end of the transmission shaft penetrates through the top of the fermentation tank body and is fixedly connected with the output shaft of the driving motor in a coaxial line, the connecting frame is fixedly mounted on the surface of the transmission shaft, and the scraping rod is integrally formed on the side, away from the transmission shaft, of the connecting frame and is attached to the inner side wall of the fermentation tank body.

[0007] As a further scheme of the present application, the outer surface of the transmission shaft is annularly provided with a plurality of L-shaped stirring shafts, and the surface of each stirring shaft is fixedly provided with a plurality of stirring blades.

[0008] As a further scheme of the present application, the cooling sandwich is arranged in the tank wall of the fermentation tank body, the spiral resistance plate of the spiral structure is arranged in the cooling sandwich, the cooling liquid inlet pipe is arranged on one side surface of the top of the fermentation tank body and extends into the cooling sandwich, the cooling liquid outlet pipe is arranged on one side surface of the bottom of the fermentation tank body and extends into the cooling sandwich.

[0009] As a further scheme of the present application, the gas distribution plate is arranged on the inner bottom surface of the fermentation tank body, a plurality of air holes are uniformly arranged on the gas distribution plate, and the air inlet pipe is connected to the lower portion of the gas distribution plate and extends out of the bottom of the fermentation tank body.

[0010] As a further scheme of the present application, the stirring blades are arranged in a spiral shape and are provided with a plurality of protrusions on the surface.

[0011] As a further scheme of the present application, the one-way valve is arranged in the exhaust pipe, and the flow regulating valve is arranged on the air inlet pipe.

[0012] As a further scheme of the present application, the observation window is arranged on one side of the top of the fermentation tank body.

[0013] As a further scheme of the present application, the liquid level sensor is mounted on the surface of the fermentation tank body, and the detection end of the liquid level sensor extends into the fermentation tank body.

[0014] The present application has the following beneficial effects:

[0015] 1. The utility model discloses a stirring shaft, stirring vane, cooling interlayer, cooling liquid inlet pipe, gas distribution plate, spiral resistance plate, connecting frame, scraper, protruding and observation window etc. cooperate with each other through the structure of setting, make the scraper slide on the inside wall of fermentation tank main body, can scrape the material that adheres, make it return to fermentation tank main body again, can minimize the residue of material on the tank wall, can keep the cleanliness of tank wall, guarantee the full use of fermentation raw material, reduce the residue of material can effectively reduce the production cost, ensure product yield simultaneously, make heat can be more efficient through the tank wall transmission to fermentation broth or emit from fermentation broth, thereby better control the accuracy of fermentation temperature;

[0016] Meanwhile, the transmission shaft can also drive the stirring shaft of L-shaped structure to rotate, and make the spiral stirring vane on the surface of the stirring shaft and the protrusions on the stirring vane rotate, so that the material can be fully stirred, and the fermentation reaction is promoted. The spiral structure can push the material to move up and down in the fermentation tank main body, so that the materials at different heights can be fully mixed, and the materials are prevented from accumulating in a local place. The protrusions can disrupt the original flow state of the materials during the stirring process, and form more small-scale eddies and turbulent flows. For some fermentation materials with high viscosity, such as some polysaccharide fermentation broth, the small-scale mixing can effectively break the viscosity aggregation of the materials, so that the microorganisms, nutrient components and the like in the materials can be more uniformly contacted, and the rate and efficiency of the fermentation reaction are improved.

[0017] 2. The cooling interlayer is arranged to control the temperature in the fermentation tank. The external cooling liquid supply pipe enters the cooling liquid into the cooling interlayer from the cooling liquid inlet pipe, and then flows out from the cooling liquid outlet pipe after absorbing the heat generated during the fermentation process. In combination with the spiral resistance plate, the flow path of the cooling liquid in the cooling interlayer can be changed, so that the cooling liquid forms a spiral flow path, the residence time of the cooling liquid in the cooling interlayer is prolonged, the cooling liquid can be more fully contacted with the tank wall, and the heat generated during the fermentation process can be more effectively absorbed, so that the fermentation efficiency and product quality are not affected due to the excessively high temperature.

[0018] 3. The utility model discloses a gas distribution plate and liquid level sensor, gas distribution plate is located fermentation tank main body bottom, can transport carbon dioxide gas and the like of gas inlet pipe to, and evenly distribute in fermentation material through the air hole on the gas distribution plate, the flow regulating valve on the gas inlet pipe can adjust the gas flow, and the uniformly distributed gas can make the fermentation reaction proceed synchronously in the whole fermentation material, guarantee the uniformity of fermentation process, thereby improve the quality and yield of fermentation product;Liquid level sensor can real -time monitoring the liquid level height in fermentation tank, provides data support for the monitoring and control of fermentation process, and the observation window at the top of the fermentation tank main body facilitates the observation of the fermentation condition by the operator. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the fermenter body in this utility model;

[0021] Figure 3 This is a schematic diagram of the coolant jacket and spiral baffle structure in this utility model;

[0022] Figure 4 This is a schematic diagram of the spiral flow-blocking plate in this utility model;

[0023] Figure 5 This is a schematic diagram of the drive motor, transmission shaft, and stirring blades in this utility model;

[0024] Figure 6 This is a schematic diagram of the connecting frame and scraper in this utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the gas distribution plate, vent, and inlet pipe in this utility model;

[0026] Figure 8 This is a schematic diagram of the structure of the protrusion and stirring blade in this utility model;

[0027] In the diagram: 1. Main body of fermenter; 2. Feed pipe; 3. Exhaust pipe; 4. Discharge pipe; 5. Stirring shaft; 6. Stirring blades; 7. Drive motor; 8. Cooling jacket; 9. Coolant inlet pipe; 10. Coolant outlet pipe; 11. Gas distribution plate; 12. Vent hole; 13. Air inlet pipe; 14. Drive shaft; 15. Spiral baffle plate; 16. Connecting frame; 17. Scraper; 18. Protrusion; 19. Liquid level sensor; 20. Observation window. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] like Figures 1 to 8 As shown, an ethanol production fermentation device includes a fermentation tank body 1, with a feed pipe 2 and an exhaust pipe 3 connected to the top of the fermentation tank body 1. A matching sealing cap is threaded onto the surface of the feed pipe 2, and a discharge pipe 4 is connected to the bottom of the fermentation tank body 1. A valve for controlling the opening and closing of the discharge pipe 4 is installed on the surface of the discharge pipe 4.

[0031] The fermentation raw materials are fed into the fermentation tank body 1 through the feeding pipe 2 for fermentation, and the gases such as carbon dioxide generated during the fermentation process are discharged through the exhaust pipe 3, and the one-way valve at the exhaust pipe 3 can effectively prevent external air from entering the fermentation tank to affect the fermentation process, and the product after fermentation is discharged from the discharge pipe 4.

[0032] The fermentation tank body 1 is internally provided with a transmission shaft 14, and the surface of the fermentation tank body 1 is provided with a driving motor 7, one end of the transmission shaft 14 penetrates through the top of the fermentation tank body 1 and is fixedly connected with the output shaft of the driving motor 7 in coaxial line, and the surface of the transmission shaft 14 is fixedly provided with a connecting frame 16, and the side of the connecting frame 16 away from the transmission shaft 14 is integrally formed with a scraping rod 17 which is attached to the inner side wall of the fermentation tank body 1.

[0033] During the fermentation process, the driving motor 7 is started to drive the transmission shaft 14 at the output shaft end to drive the connecting frame 16 to rotate, and then the scraping rod 17 integrally formed at the end of the connecting frame 16 can slide along the inner side wall of the fermentation tank body 1, so that the adhered material can be scraped off and returned to the fermentation tank body 1, which can maximize the reduction of material residue on the tank wall, keep the tank wall clean, ensure the full use of fermentation raw materials, reduce the production cost, and ensure the product yield, so that the heat can be more efficiently transferred to the fermentation liquid through the tank wall or dissipated from the fermentation liquid, thereby better controlling the accuracy of the fermentation temperature.

[0034] Further, the outer surface of the transmission shaft 14 is annularly provided with a plurality of L-shaped stirring shafts 5, and the surface of the stirring shaft 5 is fixedly provided with a plurality of stirring blades 6.

[0035] The transmission shaft 14 can also drive the L-shaped stirring shaft 5 to rotate, and the spiral stirring blades 6 connected to the surface of the stirring shaft 5 and the protrusions 18 on the stirring blades 6 can fully stir the material and promote the fermentation reaction.

[0036] Example two

[0037] Based on the improvement of example one:

[0038] Further, the tank wall of the fermentation tank body 1 is provided with a cooling layer 8, the cooling layer 8 is provided with a spiral flow resistance plate 15 of spiral structure, the top surface of the fermentation tank body 1 is provided with a cooling liquid inlet pipe 9, one end of the cooling liquid inlet pipe 9 extends into the cooling layer 8, and the bottom surface of the fermentation tank body 1 is provided with a cooling liquid outlet pipe 10, one end of the cooling liquid outlet pipe 10 extends into the cooling layer 8.

[0039] The cooling layer 8 is used to control the temperature in the fermentation tank, and the external cooling liquid supply pipe supplies cooling liquid from the cooling liquid inlet pipe 9 into the cooling layer 8, absorbs the heat generated in the fermentation process, and then flows out from the cooling liquid outlet pipe 10, and cooperates with the spiral resistance plate 15 arranged, so as to change the flow path of the cooling liquid in the cooling layer 8, make the cooling liquid form a spiral flow path, prolong the residence time of the cooling liquid in the cooling layer 8, and make the cooling liquid contact the fermentation tank wall more fully, so that the heat generated in the fermentation process can be more effectively absorbed, and the influence of high temperature on the fermentation efficiency and product quality is avoided.

[0040] Further, the inner bottom surface of the fermentation tank body 1 is provided with a gas distribution plate 11, a plurality of air holes 12 are uniformly distributed on the gas distribution plate 11, and a gas inlet pipe 13 is connected below the gas distribution plate 11.

[0041] The gas distribution plate 11 is located at the bottom of the fermentation tank body 1, and can deliver carbon dioxide and other gases to the gas inlet pipe 13, and uniformly distribute the gases in the fermentation material through the air holes 12 on the gas distribution plate 11. The flow regulating valve on the gas inlet pipe 13 can regulate the gas flow, and the uniformly distributed gas can make the fermentation reaction proceed synchronously in the entire fermentation material, ensure the uniformity of the fermentation process, and thus improve the quality and yield of the fermentation product.

[0042] Further, the stirring blade 6 is arranged in a spiral shape, and a plurality of protrusions 18 are arranged on the surface of the stirring blade 6.

[0043] The protrusions 18 can disturb the original flow state of the material during stirring, and form more small-scale eddies and turbulent flows. For some fermentation materials with high viscosity, such as some polysaccharide fermentation broth, the small-scale mixing can effectively break the viscosity aggregation of the material, so that the microorganisms, nutrients and other components in the material are more uniformly contacted, and the rate and efficiency of the fermentation reaction are improved.

[0044] Further, a one-way valve is arranged in the exhaust pipe 3, and a flow regulating valve is arranged on the gas inlet pipe 13.

[0045] The one-way valve at the exhaust pipe 3 can effectively prevent external air from entering the fermentation tank and affecting the fermentation process, and the flow regulating valve on the gas inlet pipe 13 can regulate the gas flow. The uniformly distributed gas can make the fermentation reaction proceed synchronously in the entire fermentation material, and ensure the uniformity of the fermentation process.

[0046] Further, an observation window 20 is arranged on one side of the top of the fermentation tank body 1, and a liquid level sensor 19 is arranged on the surface of the fermentation tank body 1, and the detection end of the liquid level sensor 19 extends into the inside of the fermentation tank body 1.

[0047] The liquid level sensor 19 can monitor the liquid level in the fermentation tank in real time, providing data support for the monitoring and control of the fermentation process. The observation window 20 at the top of the fermentation tank body 1 facilitates the observation of the fermentation process by the operator.

[0048] Working principle: In use, the fermentation raw materials are fed into the fermentation tank body 1 through the feed pipe 2 for fermentation. The carbon dioxide and other gases generated during the fermentation process are discharged through the exhaust pipe 3. The one-way valve at the exhaust pipe 3 can effectively prevent external air from entering the fermentation tank and affecting the fermentation process. The product after fermentation is discharged from the discharge pipe 4.

[0049] During the fermentation process, the driving motor 7 is started to drive the transmission shaft 14 installed at the output shaft end to rotate the connecting frame 16, which in turn enables the scraper rod 17 integrally formed at the end of the connecting frame 16 to slide along the inner wall of the fermentation tank body 1. This can scrape off the adhering materials and make them return to the fermentation tank body 1, thereby minimizing the residue of materials on the tank wall, keeping the tank wall clean, ensuring the full utilization of fermentation raw materials, reducing production costs, and ensuring product yield. This enables heat to be more efficiently transferred through the tank wall to the fermentation liquid or dissipated from the fermentation liquid, thereby better controlling the accuracy of the fermentation temperature;

[0050] Meanwhile, the transmission shaft 14 can also drive the L-shaped stirring shaft 5 to rotate, and the spiral stirring blades 6 connected to the surface of the stirring shaft 5 and the protrusions 18 on the stirring blades 6 can fully stir the materials and promote the fermentation reaction. The spiral structure can push the materials up and down in the fermentation tank body 1, allowing the materials at different heights to be fully mixed and avoiding local accumulation of materials. The protrusions 18 can disrupt the original flow state of the materials during stirring, forming more small-scale vortices and turbulent flows. For some viscous fermentation materials, such as certain polysaccharide fermentation liquids, this small-scale mixing can effectively break the viscosity aggregation of the materials, allowing the microorganisms, nutrients, and other components in the materials to be more uniformly contacted, thereby improving the rate and efficiency of the fermentation reaction;

[0051] The cooling layer 8 is used to control the temperature in the fermentation tank. The external cooling liquid supply pipe introduces cooling liquid from the cooling liquid inlet pipe 9 into the cooling layer 8, absorbs the heat generated during the fermentation process, and then flows out from the cooling liquid outlet pipe 10. In combination with the spiral flow resistance plate 15, the flow path of the cooling liquid in the cooling layer 8 can be changed, allowing the cooling liquid to form a spiral flow path and prolonging its residence time in the cooling layer 8. This enables the cooling liquid to more fully contact the fermentation tank wall and more effectively absorb the heat generated during the fermentation process, thereby avoiding the impact of excessive temperature on the fermentation efficiency and product quality.

[0052] The gas distribution plate 11 is located at the bottom of the fermentation tank body 1, and can convey the carbon dioxide and other gases conveyed by the gas inlet pipe 13 to the fermentation material through the air holes 12 on the gas distribution plate 11, and the flow regulating valve on the gas inlet pipe 13 can adjust the gas flow, and the uniformly distributed gas can make the fermentation reaction proceed synchronously in the whole fermentation material, ensure the uniformity of the fermentation process, and thus improve the quality and yield of the fermentation product;

[0053] The liquid level sensor 19 can monitor the liquid level in the fermentation tank in real time, and provide data support for monitoring and control of the fermentation process, and the observation window 20 at the top of the fermentation tank body 1 facilitates the observation of the fermentation condition by the operator.

[0054] It should be noted that: the bottom of the fermentation tank body 1 is provided with supporting legs, and the bottom of the supporting legs is provided with shock-absorbing pads to reduce the vibration during operation of the equipment.

[0055] For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0056] In addition, it should be understood that although the present application is described in the specification, each embodiment only contains one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. An ethanol production fermentation apparatus comprising a fermenter body (1) characterised in that: The fermentation tank body (1) top is communicated with feed pipe (2) and exhaust pipe (3), the surface of feed pipe (2) is connected with the sealing cover of adaptation, the bottom of fermentation tank body (1) is communicated with discharge pipe (4), the surface of discharge pipe (4) is installed with the valve of control opening and closing; The fermentation tank body (1) is internally provided with a transmission shaft (14), and the surface of the fermentation tank body (1) is provided with a driving motor (7). One end of the transmission shaft (14) penetrates the top of the fermentation tank body (1) and is fixedly connected with the output shaft of the driving motor (7) in a coaxial manner. A connecting frame (16) is fixedly installed on the surface of the transmission shaft (14). The connecting frame (16) is integrally formed with a scraping rod (17) away from one side of the transmission shaft (14). The scraping rod (17) is attached to the inner side wall of the fermentation tank body (1).

2. The ethanol production fermentation apparatus according to claim 1, characterized by: A plurality of L-shaped stirring shafts (5) are annularly installed on the outer surface of the transmission shaft (14). A plurality of stirring blades (6) are fixedly installed on the surface of the stirring shaft (5).

3. The ethanol production fermentation apparatus according to claim 1, characterized by: A cooling layer (8) is arranged in the wall of the fermentation tank body (1). A spiral resistance plate (15) in a spiral structure is installed in the cooling layer (8). A cooling liquid inlet pipe (9) is installed on one side surface of the top of the fermentation tank body (1). One end of the cooling liquid inlet pipe (9) extends into the cooling layer (8). A cooling liquid outlet pipe (10) is installed on one side surface of the bottom of the fermentation tank body (1). One end of the cooling liquid outlet pipe (10) extends into the cooling layer (8).

4. The ethanol production fermentation apparatus according to claim 1, characterized by: A gas distribution plate (11) is installed on the inner bottom surface of the fermentation tank body (1). A plurality of air holes (12) are uniformly distributed on the gas distribution plate (11). An air inlet pipe (13) is connected below the gas distribution plate (11). One end of the air inlet pipe (13) extends out of the bottom of the fermentation tank body (1).

5. The ethanol production fermentation apparatus according to claim 2, characterized by: The stirring blades (6) are arranged in a spiral shape, and a plurality of protrusions (18) are arranged on the surface of the stirring blades (6).

6. The ethanol production fermentation apparatus according to claim 4, characterized by: A one-way valve is installed in the exhaust pipe (3), and a flow regulating valve is installed on the air inlet pipe (13).

7. The ethanol production fermentation apparatus as claimed in claim 1, characterized by: An observation window (20) is arranged on one side of the top of the fermentation tank body (1).

8. The ethanol production fermentation apparatus as claimed in claim 1, characterized by: A liquid level sensor (19) is installed on the surface of the fermentation tank body (1). The detection end of the liquid level sensor (19) extends into the fermentation tank body (1).

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