Efficient fermentation device with electric field

Abstract

The invention discloses an efficient fermentation device with an electric field. The efficient fermentation device comprises a fermentation tank body, an electrode assembly and a stirring mechanism, the electrode assembly comprises two electrodes extending into the inner cavity of the fermentation tank body; the stirring mechanism comprises stirring blades, a stirring driving mechanism for driving the stirring blades to rotate and a vertical driving mechanism for driving the stirring blades to vertically move; the stirring driving mechanism comprises a stirring driving motor and a stirring transmission assembly, and the stirring driving motor is fixedly arranged outside the fermentation tank body. The efficient fermentation device with the electric field has the advantages of being simple in structure, high in efficiency, easy to operate, low in cost, large in fermentation product yield and the like.

Description

Technical Field

[0001] The present invention relates to a fermentation tank, and more particularly to a high-efficiency fermentation device with an electric field. Background Art

[0002] At present, PID is generally used in fermentation tanks, and acids or alkalis are used for in-tank disinfection and cleaning. This not only requires a large amount of acid and alkali reagents, increasing the costs of materials, waste liquid treatment and labor, but also has problems such as low cleaning efficiency and equipment corrosion. Moreover, the organic matter conversion efficiency of existing fermentation tanks is not high enough, and the output of fermentation products needs to be improved. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned existing problems and provide a high-efficiency fermentation device with an electric field, which has the advantages of simple structure, high efficiency, easy operation, low cost, large output of fermentation products, etc.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A high-efficiency fermentation device with an electric field includes a fermentation tank body, an electrode assembly and a stirring mechanism;

[0006] The electrode assembly includes two electrodes extending into the inner cavity of the fermentation tank body;

[0007] The stirring mechanism includes stirring blades, a stirring driving mechanism for driving the stirring blades to rotate, and a vertical driving mechanism for driving the stirring blades to move vertically.

[0008] A preferred embodiment of the present invention, wherein the stirring driving mechanism includes a stirring driving motor and a stirring transmission assembly. The stirring driving motor is fixedly arranged outside the fermentation tank; the stirring transmission assembly includes a stirring mounting seat, a first transmission shaft, a second transmission shaft and an intermediate transmission structure. The stirring mounting seat is fixedly arranged in the inner cavity of the fermentation tank body. One end of the first transmission shaft is connected to the stirring driving motor, and the other end of the first transmission shaft is connected to the intermediate transmission structure; the second transmission shaft is arranged vertically, one end of the second transmission shaft is connected to the intermediate transmission structure, and the other end of the second transmission shaft is connected to the stirring blades.

[0009] Further, the intermediate transmission structure includes a synchronous belt assembly, a screw rod transmission assembly and a transmission switching assembly;

[0010] The synchronous belt assembly includes a belt and two belt pulleys, and one of the belt pulleys is coaxially connected to the other end of the first transmission shaft;

[0011] The screw rod transmission assembly includes a screw rod and a screw nut, and the screw rod is integrally provided with the second transmission shaft;

[0012] The transmission switching assembly includes a switching transmission shaft, a driving switching gear, a first driven switching gear, a second driven switching gear, and a switching electromagnet. The switching transmission shaft is arranged vertically and is coaxially connected to another pulley in an axially movable manner. The driving switching gear is fixedly sleeved on the switching transmission shaft. The first driven switching gear and the second driven switching gear are both rotatably arranged on the stirring mounting base. The first driven switching gear is sleeved on the lead screw in a vertically movable manner. A key block is provided on the first driven switching gear, and a keyway is provided on the lead screw. The second driven switching gear is integrally provided with a lead screw nut. The telescopic rod of the switching electromagnet is connected to the transmission locking integrated frame, and the transmission locking integrated frame is fixedly connected to the switching transmission shaft. A locking structure for locking the first driven switching gear in the lifting state is provided on the transmission locking integrated frame.

[0013] Further, the locking structure includes a locking block and a locking buffer spring. The locking block is vertically movably arranged on the transmission locking integrated frame, and two ends of the locking buffer spring respectively abut against the locking block and the transmission locking integrated frame. In this way, a buffering effect can be provided to prevent the hard contact between the locking block and the first driven switching gear.

[0014] Further, the other end of the second transmission shaft is connected to the stirring blades through an intermediate mounting frame. There are two stirring blades, and the two stirring blades are respectively rotatably connected to both ends of the intermediate mounting frame. Along the advancing direction, the stirring blades incline forward from bottom to top. In the non-working state, the included angle between the two stirring blades is 180°.

[0015] A preferred solution of the present invention is that an outer thermal insulation layer is further included. The fermentation tank body is located inside the outer thermal insulation layer, and a temperature control chamber is provided between the fermentation tank body and the outer thermal insulation layer. The temperature control chamber is used for loading a heating medium. A heater is provided in the temperature control chamber.

[0016] A preferred solution of the present invention is that the outer thermal insulation layer is wrapped with a thermal insulation material, and the thermal insulation material includes polyurethane or / and EPE.

[0017] A preferred solution of the present invention is that a feed inlet is provided at the top of the fermentation tank body, and a discharge outlet is provided at the bottom of the fermentation tank body.

[0018] A preferred solution of the present invention is that a cleaning assembly for cleaning the inner cavity of the fermentation tank body is provided at the top of the fermentation tank body.

[0019] A preferred solution of the present invention is that a pressure relief valve for adjusting the pressure in the inner cavity of the fermentation tank body is provided at the top of the fermentation tank body.

[0020] A preferred embodiment of the present invention is that a condenser for collecting distilled materials is provided at the top of the fermentation tank body. When it is necessary to separate the product, the temperature of the interlayer water is increased after fermentation, and the product separation is achieved through the condenser provided at the top of the fermentation tank.

[0021] A preferred embodiment of the present invention is that a temperature sensor extending into the inner cavity is provided on the side of the fermentation tank body.

[0022] The present invention has the following beneficial effects compared with the prior art:

[0023] 1. By providing a temperature control chamber with a heater, the present invention realizes the sterilization and fermentation temperature control of the fermentation tank, with a simple structure, high efficiency, easy operation, greatly saving labor costs and the use of conventional acid-base reagents, and achieving a significant cost reduction.

[0024] 2. By adding an electric field during the fermentation process, the conversion efficiency of organic substances can be optimized, and the yield of fermentation products can be increased.

[0025] 3. By providing a stirring shaft that can move up and down according to the amount of materials, the full mixing of the materials is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the high-efficiency fermentation device with an electric field of the present invention.

[0027] Figures 2 - 3 It is a cross-sectional view of the high-efficiency fermentation device with an electric field of the present invention in two different directions.

[0028] Figure 4 It is a front view of the stirring mechanism of the present invention.

[0029] Figures 5 - 6 is Figure 4 an enlarged view of two different working states of X in Figure 6 where the stirring mounting seat is hidden.

[0030] Figure 7 is Figure 6 an enlarged view of Y in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In order to enable those skilled in the art to well understand the technical solution of the present invention, the present invention will be further described below in conjunction with the embodiments and the drawings, but the embodiments of the present invention are not limited thereto.

[0032] Embodiment 1

[0033] Combined with Figures 1 - 3, the high-efficiency fermentation device with an electric field of this embodiment includes an outer thermal insulation layer 1, a fermentation tank body 2, a heater 3, and an electrode assembly; wherein, the outer thermal insulation layer 1 is wrapped with thermal insulation materials, and the thermal insulation materials include but are not limited to polyurethane, EPE, etc.; the fermentation tank body 2 is located inside the outer thermal insulation layer 1, and a temperature control chamber 4 is provided between the fermentation tank body 2 and the outer thermal insulation layer 1; the temperature control chamber 4 is used to load a heating medium; the heater 3 is arranged in the temperature control chamber 4; the electrode assembly includes two electrodes 5 extending into the inner cavity of the fermentation tank body 2.

[0034] Furthermore, the electrode assembly adopts one or more of carbon rods, iron-carbon rods, carbon brushes, iron-carbon brushes, carbon felts, titanium meshes, iron-titanium meshes, and stainless steel plates. A DC regulated power supply is used, with a voltage of 0.2 - 2.5V, and the power-on time per day is 1h - 24h, and the power-on intervals per day are 0 times, 1 time, 2 times, 3 times, 4 times, and 5 times.

[0035] Combined with Figures 1 - 3 , the outer thermal insulation layer 1 is wrapped with thermal insulation materials, and the thermal insulation materials include polyurethane or / and EPE.

[0036] Combined with Figures 1 - 3 , a feed inlet 6 is provided at the top of the fermentation tank body 2, and a discharge outlet 7 is provided at the bottom of the fermentation tank body 2.

[0037] Combined with Figures 1 - 3 , a cleaning assembly 8 for cleaning the inner cavity of the fermentation tank body 2 is provided at the top of the fermentation tank body 2.

[0038] Combined with Figures 1 - 3 , a pressure relief valve 9 for adjusting the pressure in the inner cavity of the fermentation tank body 2 is provided at the top of the fermentation tank body 2.

[0039] Specifically, a condenser for collecting distilled materials is provided at the top of the fermentation tank body 2. When it is necessary to separate the product, the temperature of the interlayer water is increased after fermentation, and the product separation is achieved through the condenser provided at the top of the fermentation tank.

[0040] Combined with Figures 1 - 3 , a temperature sensor 10 extending into the inner cavity is provided on the side of the fermentation tank body 2.

[0041] Combined with Figures 4 - 6, a stirring mechanism is provided on the fermentation tank body 2, and the stirring mechanism includes stirring blades 11 and a stirring drive mechanism for driving the stirring blades 11 to rotate; the stirring drive mechanism includes a stirring drive motor 12 and a stirring transmission assembly, and the stirring drive motor 12 is fixedly arranged outside the fermentation tank body 2; the stirring transmission assembly includes a stirring mounting seat 13, a first transmission shaft 14, a second transmission shaft 15 and an intermediate transmission structure, the stirring mounting seat 13 is fixedly arranged in the inner cavity of the fermentation tank body 2, one end of the first transmission shaft 14 is connected with the stirring drive motor 12, and the other end of the first transmission shaft 14 is connected with the intermediate transmission structure; the second transmission shaft 15 is arranged vertically, one end of the second transmission shaft 15 is connected with the intermediate transmission structure, and the other end of the second transmission shaft 15 is connected with the stirring blades 11.

[0042] Combined with Figures 4 - 6 , the intermediate transmission structure includes a synchronous belt assembly, a lead screw transmission assembly and a transmission switching assembly; the synchronous belt assembly includes a belt 17 and two belt pulleys, and one of the belt pulleys is coaxially connected with the other end of the first transmission shaft 14; the lead screw transmission assembly includes a lead screw 19 and a lead screw nut, and the lead screw 19 is integrally arranged with the second transmission shaft 15; the transmission switching assembly includes a switching transmission shaft 20, a driving switching gear 21, a first driven switching gear 22, a second driven switching gear 23 and a switching electromagnet 24, the switching transmission shaft 20 is arranged vertically and is coaxially connected with the other belt pulley in a relatively axially movable manner; the driving switching gear 21 is fixedly sleeved on the switching transmission shaft 20, the first driven switching gear 22 and the second driven switching gear 23 are both rotatably arranged on the stirring mounting seat 13, the first driven switching gear 22 is sleeved on the lead screw 19 in a relatively vertically movable manner, a key block 25 is arranged on the first driven switching gear 22, and a key groove 26 is arranged on the lead screw 19; the second driven switching gear 23 is integrally arranged with the lead screw nut; the telescopic rod of the switching electromagnet 24 is connected with a transmission locking integrated frame 27, the transmission locking integrated frame 27 is fixedly connected with the switching transmission shaft 20, and a locking structure for locking the first driven switching gear 22 in the lifting state is arranged on the transmission locking integrated frame 27.

[0043] Combined with Figure 7 , the locking structure includes a locking block 28 and a locking buffer spring 29, the locking block 28 is arranged on the transmission locking integrated frame 27 in a relatively vertically movable manner, and two ends of the locking buffer spring 29 are respectively abutted against the locking block 28 and the transmission locking integrated frame 27. In this way, a buffering effect can be provided to prevent the locking block 28 from being in hard contact with the first driven switching gear 22.

[0044] With the above structure, when it is necessary to drive the stirring blade 11 to rotate, first drive the switching transmission shaft 20 to move vertically by switching the electromagnet 24, so that the driving switching gear 21 meshes with the first driven switching gear 22. Then start the stirring drive motor 12. The power is transmitted to the switching transmission shaft 20 by the first transmission shaft 14, the bevel gear set and the synchronous belt assembly. Then the driving switching gear 21 on the switching transmission shaft 20 drives the first driven switching gear 22 to rotate. Under the action of the key block 25 and the key groove 26, the lead screw 19 drives the second transmission shaft 15 and the stirring blade 11 to rotate, so as to stir the fermentation materials.

[0045] When it is necessary to drive the stirring blade 11 to lift, first drive the switching transmission shaft 20 to move vertically by switching the electromagnet 24, so that the driving switching gear 21 meshes with the second driven switching gear 23. At this time, the locking structure of the transmission locking integrated frame 27 presses on the first driven switching gear 22 to keep the first driven switching gear 22 stationary. Then start the stirring drive motor 12. According to the above transmission path, the power is transmitted to the second driven switching gear 23. The second driven switching gear 23 drives the lead screw nut to rotate, so that the lead screw 19 drives the second transmission shaft 15 and the stirring blade 11 to move up and down, so as to stir the materials at different heights and improve the fermentation conversion rate. During this process, the stirring drive motor 12, the synchronous belt assembly and the lead screw transmission assembly constitute a vertical drive mechanism for driving the stirring blade to move vertically.

[0046] Combined with Figure 4 , the other end of the second transmission shaft 15 is connected to the stirring blade 11 through the intermediate mounting frame 30. There are two stirring blades 11. The two stirring blades 11 are respectively rotatably connected to both ends of the intermediate mounting frame 30. Along the forward direction, the stirring blade 11 inclines forward from bottom to top. In the non-working state, the included angle between the two stirring blades 11 is 180°. With the above structure, when the stirring blade 11 rotates around the second transmission shaft 15, due to the forward inclination of the stirring blade 11, it will be subjected to an upward oblique force. This force is decomposed into a horizontal force component backward and a vertical upward component. This vertical upward component will drive the stirring blade 11 to swing upward. The included angle between the two stirring blades 11 changes from 180° to less than 180°. Moreover, the greater the rotation speed, the greater the swing amplitude of the stirring blade 11, the smaller the included angle between the two stirring blades 11, and the smaller the stirring diameter.

[0047] Combined with Figures 1 - 3 , the working principle of the above-mentioned high-efficiency fermentation device with electric field is as follows:

[0048] Add water with a volume of one-third of the inner tank into the fermentation tank body 2, and introduce water into the temperature control chamber 4 to fill the temperature control chamber 4 with water. Then, turn on the heater 3 to heat the water in the temperature control chamber 4 and the fermentation tank body 2 to 100 °C for high-temperature sterilization through steam.

[0049] After heating for a certain period of time (such as 30 minutes), drain the sterilized water in the fermentation tank body 2 and put in rice. Control the water temperature in the temperature control chamber 4 to the set 30 °C to carry out ethanol fermentation of the rice at a constant temperature, thus realizing the integration of fermentation and cleaning, which has the advantages of simple structure, high efficiency, easy operation, low cost, etc. Further, during the fermentation process, two electrodes 5 are energized to apply an electric field to the fermentation materials, which can optimize the conversion efficiency of organic substances and increase the yield of fermentation products.

[0050] Example 2:

[0051] Turn on the electric field, and the electric field conditions are: voltage 0.2V, energize for 6h first and then power off for 6h, and the number of power-off intervals per day is 2. Control the temperature in the fermentation tank to 40 °C. After the fermentation is completed, higher yields of ethanol and lactic acid can be obtained. The lactic acid yield increase rate is 10.3%, and the ethanol yield increase rate is 29.5%. It can be seen that adding an electric field during the fermentation process can optimize the conversion efficiency of organic substances and increase the yield of fermentation products. Applying an electric field can promote the production of key fermentation enzymes, such as increasing the content of alcohol dehydrogenase and lactate dehydrogenase; these enzymes play a core role in the biosynthesis of ethanol and lactic acid. At the same time, the electric field also increases the content of NAD+ / NADH and NADPH-related enzymes that regulate the energy metabolism of microorganisms. This effect of the electric field is mainly achieved by improving the metabolic activity of microorganisms and enhancing the electron transfer efficiency.

[0052] Example 3:

[0053] The steps are basically the same as those in Example 2, the difference being that after the fermentation is completed and before discharging the materials, a product separation step is added. That is, after the fermentation is completed, raise the temperature of the interlayer water to 80 °C to distill the fermented rice, and separate the bioethanol through the condenser at the top of the fermentation tank.

[0054] The above are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. An efficient fermentation device with an electric field, characterized in that It includes a fermentation tank body, an electrode assembly and a stirring mechanism; The electrode assembly includes two electrodes extending into the inner cavity of the fermentation tank body; The stirring mechanism includes stirring blades, a stirring drive mechanism for driving the stirring blades to rotate, and a vertical drive mechanism for driving the stirring blades to move vertically.

2. The high-efficiency fermentation device with an electric field according to claim 1, characterized in that, The stirring drive mechanism includes a stirring drive motor and a stirring transmission assembly. The stirring drive motor is fixedly arranged outside the fermentation tank body; the stirring transmission assembly includes a stirring mounting seat, a first transmission shaft, a second transmission shaft and an intermediate transmission structure. The stirring mounting seat is fixedly arranged in the inner cavity of the fermentation tank body. One end of the first transmission shaft is connected to the stirring drive motor, and the other end of the first transmission shaft is connected to the intermediate transmission structure; the second transmission shaft is arranged vertically, one end of the second transmission shaft is connected to the intermediate transmission structure, and the other end of the second transmission shaft is connected to the stirring blades.

3. The high-efficiency fermentation device with an electric field according to claim 2, characterized in that, The intermediate transmission structure includes a synchronous belt assembly, a lead screw transmission assembly and a transmission switching assembly; The synchronous belt assembly includes a belt and two belt pulleys, and one of the belt pulleys is coaxially connected to the other end of the first transmission shaft; The lead screw transmission assembly includes a lead screw and a lead screw nut, and the lead screw is integrally provided with the second transmission shaft; The transmission switching assembly includes a switching transmission shaft, a driving switching gear, a first driven switching gear, a second driven switching gear and a switching electromagnet. The switching transmission shaft is arranged vertically and is coaxially connected to the other belt pulley in an axially movable manner; the driving switching gear is fixedly sleeved on the switching transmission shaft. The first driven switching gear and the second driven switching gear are both rotatably arranged on the stirring mounting seat. The first driven switching gear is sleeved on the lead screw in a vertically movable manner, and a key block is arranged on the first driven switching gear, and a key groove is arranged on the lead screw; the second driven switching gear is integrally provided with the lead screw nut; the telescopic rod of the switching electromagnet is connected to the transmission locking integrated frame, and the transmission locking integrated frame is fixedly connected to the switching transmission shaft. A locking structure for locking the first driven switching gear in the lifting state is arranged on the transmission locking integrated frame.

4. The high-efficiency fermentation device with an electric field according to claim 3, characterized in that, The locking structure includes a locking block and a locking buffer spring. The locking block is vertically movably arranged on the transmission locking integrated frame, and the two ends of the locking buffer spring respectively abut against the locking block and the transmission locking integrated frame.

5. The high-efficiency fermentation device with an electric field according to claim 3, characterized in that The other end of the second transmission shaft is connected to the stirring blades through an intermediate mounting frame. There are two stirring blades, and the two stirring blades are respectively rotatably connected to both ends of the intermediate mounting frame; along the advancing direction, the stirring blades tilt forward from bottom to top; in the non-working state, the included angle between the two stirring blades is 180°.

6. The high-efficiency fermentation device with an electric field according to claim 1, wherein It further includes an outer thermal insulation layer. The fermentation tank body is located inside the outer thermal insulation layer, and a temperature control chamber is arranged between the fermentation tank body and the outer thermal insulation layer; the temperature control chamber is used for loading a heating medium, and a heater is arranged in the temperature control chamber.

7. The high-efficiency fermentation device with an electric field according to claim 6, characterized in that, The outer thermal insulation layer is wrapped with a thermal insulation material, and the thermal insulation material includes polyurethane or / and pearl cotton.

8. The high-efficiency fermentation device with an electric field according to claim 1, characterized in that, A feed port is arranged at the top of the fermentation tank body, and a discharge port is arranged at the bottom of the fermentation tank body; A cleaning assembly for cleaning the inner cavity of the fermentation tank is provided at the top of the fermentation tank; A pressure relief valve for adjusting the pressure in the inner cavity of the fermentation tank is provided at the top of the fermentation tank.

9. The high-efficiency fermentation device with an electric field according to claim 1, wherein A condenser for collecting distilled materials is provided at the top of the fermentation tank. When separating products, the temperature of the interlayer water is increased after fermentation, and product separation is achieved through the condenser provided at the top of the fermentation tank.

10. The high-efficiency fermentation device with an electric field according to claim 1, characterized in that, A temperature sensor extending into the inner cavity is provided on the side of the fermentation tank.

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