Pickled Chinese cabbage fermentation device with constant temperature effect and fermentation method thereof

Abstract

The invention relates to the technical field of sauerkraut fermentation, and discloses a sauerkraut fermentation device with a constant temperature effect and a fermentation method thereof.The sauerkraut fermentation device comprises a sauerkraut fermentation tank and a fixing plate, four sets of supporting columns are fixedly mounted at the left end of the surface of the fixing plate, and a mounting frame is fixedly mounted between the right end of the surface of the fixing plate and the supporting columns; a shell is fixedly installed on the outer side of the pickled Chinese cabbage fermentation tank, after pickled Chinese cabbages enter the pickled Chinese cabbage fermentation tank, a sealing top cover is covered, the temperature in the pickled Chinese cabbage fermentation tank is monitored in real time through a temperature sensor, when cooling is needed, a water pump is started, cooling liquid in a water tank circularly flows through a drainage pipe, a condensation pipe and a water return pipe, and therefore the temperature in the pickled Chinese cabbage fermentation tank is regulated and controlled to be constant. If the temperature needs to be increased, an electric heating wire is started for heating, meanwhile, a servo motor is started, a driving gear is driven to rotate through a transmission shaft, and under the synergistic effect of a driven gear and a rotating shaft, a stirring rod and a stirring paddle stir the pickled Chinese cabbages in the tank, so that the pickled Chinese cabbages make full contact with a leavening agent, and breeding of lactic acid bacteria in a constant-temperature environment is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of sauerkraut fermentation, and in particular to a sauerkraut fermentation device with constant temperature function and a fermentation method thereof. Background Art

[0002] As a traditional fermented food, sauerkraut has a wide consumer market in my country and even around the world. Its unique flavor and rich nutritional value are deeply loved by people. The traditional method of fermenting sauerkraut is natural fermentation, which is to mix the vegetables with salt water, place them in containers such as jars and pots, and ferment them in a natural environment.

[0003] Traditional sauerkraut fermentation methods are mostly natural fermentation, which has some disadvantages. First, the natural environment temperature is difficult to control, and temperature has a key influence on the growth and metabolism of microorganisms during the sauerkraut fermentation process. Secondly, there is a lack of effective stirring and mixing means during the natural fermentation process, which makes the fermentation raw materials ferment unevenly in the container. Some areas may be over-fermented, while some areas are under-fermented, resulting in inconsistent taste and flavor of the sauerkraut. For this reason, we propose a sauerkraut fermentation device with constant temperature effect and a fermentation method thereof. Summary of the invention

[0004] The purpose of the present invention is to provide a sauerkraut fermentation device and a fermentation method with a constant temperature effect, so as to solve the problem that the traditional sauerkraut fermentation method proposed in the above background technology is mostly natural fermentation, which has some disadvantages. First, the natural environment temperature is difficult to control, and the temperature has a key influence on the growth and metabolism of microorganisms in the sauerkraut fermentation process. Secondly, there is a lack of effective stirring and mixing means in the natural fermentation process, which makes the fermentation raw materials ferment unevenly in the container. Some areas may be over-fermented, while some areas are under-fermented, resulting in inconsistent taste and flavor of the sauerkraut.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sauerkraut fermentation device with a constant temperature effect, comprising a sauerkraut fermentation tank and a fixed plate, four groups of support columns are fixedly installed on the left end of the surface of the fixed plate, and a mounting frame is fixedly installed between the right end of the surface and the support columns, a shell is fixedly installed on the outside of the sauerkraut fermentation tank, and a sealed top cover is provided on the top, a temperature sensor is fixedly installed on the bottom surface of the sealed top cover and located inside the sauerkraut fermentation tank, an electric heating wire is fixedly installed on the inner bottom surface of the shell, a temperature control mechanism is provided between the sauerkraut fermentation tank and the shell and outside, and a stirring mechanism is provided inside the sauerkraut fermentation tank, the temperature control mechanism comprises a water tank fixedly installed on the bottom left side of the fixed plate, the water tank is connected to a water pump through a drain pipe, and the water pump is fixedly connected to a return pipe through a condenser, the stirring mechanism comprises a servo motor fixedly installed on the right outer surface of the mounting frame, the servo motor is fixedly installed with a driving gear through a transmission shaft, the sauerkraut fermentation tank is connected to a driven gear through a rotating shaft, and the rotating shaft is fixedly connected to a stirring paddle through a stirring rod.

[0006] As a further solution of the present invention, the tops of the four groups of support columns are commonly fixedly connected with a mounting base, a disinfection tank is fixedly installed at the internal axis of the mounting base, a flipping mechanism and a compacting mechanism are respectively provided on the side and the top of the mounting base, a control box is fixedly installed at the bottom left side of the fixed plate and on the front side of the water tank, a conveying member is fixedly installed between the disinfection tank and the tank mouth of the sauerkraut fermentation tank, and an exhaust mechanism is provided on one side of the top of the sealing top cover.

[0007] As a further solution of the present invention, one end of the drain pipe is fixedly connected to the bottom of the water tank and extends to the interior of the water tank, and the other end is fixedly connected to the input end of the water pump. The condenser is spirally fixedly installed on the inner wall of the outer shell, and one end is fixedly connected to the output end of the water pump, and the other end is fixedly connected to the return pipe. The end of the return pipe away from the condenser is fixedly installed on the upper end of the water tank, and the return pipe extends to the interior of the water tank. An inlet pipe is fixedly installed on the upper end of one side of the water tank.

[0008] As a further solution of the present invention, the transmission shaft passes through the right side of the mounting frame and is fixedly connected to the output end of the servo motor, and the transmission shaft is rotatably connected to the inside of the right side of the mounting frame, the driving gear is fixedly installed at the end of the transmission shaft away from the servo motor and is located inside the mounting frame, the bottom and top ends of the rotating shaft are respectively rotatably connected to the inner bottom surface of the sauerkraut fermentation tank and the inner top surface of the mounting frame, and the rotating shaft is rotatably connected to the inside of the sealing top cover, and the driven gear is fixedly installed on the circumferential surface of the rotating shaft and is located inside the mounting frame.

[0009] As a further solution of the present invention, the stirring rods are provided in multiple groups and are evenly fixed on the circumferential surface of the rotating shaft, the stirring paddle is fixed on the end of the stirring rod away from the rotating shaft, and the side surface of the stirring paddle away from the stirring rod is in contact with the inner wall of the sauerkraut fermentation tank, and the driving gear is meshed and connected with the driven gear.

[0010] As a further solution of the present invention, the flipping mechanism includes a rotating motor fixedly mounted on the right side surface of the mounting seat and a dual-axis motor on the left side surface, the output end of the rotating motor is fixedly mounted with a fixed shaft, and the fixed shaft is rotatably connected to the inside of the mounting seat, the circumferential surface of the fixed shaft is fixedly mounted with a fixed disk, and the fixed disk is movably mounted inside the mounting seat, screw rods are fixedly mounted at both ends of the dual-axis motor, and the two groups of screw rod threads are arranged in opposite directions, the circumferential surfaces of the two groups of screw rods are threadedly connected with threaded sliders, a connecting rod is fixedly mounted on one side surface of the threaded slider, a limiting shaft is fixedly mounted on one end of the connecting rod away from the threaded slider, and the limiting shaft is slidably connected to the inside of the mounting seat, and limiting holes matching the limiting shaft are provided on both sides of the circumferential surface of the fixed disk.

[0011] As a further solution of the present invention, the compacting mechanism includes a fixing frame fixedly mounted on the surface of the mounting seat, two groups of hydraulic rods are fixedly mounted on the upper end of the fixing frame, and a compression plate is commonly fixedly mounted on the output ends of the two groups of hydraulic rods, and the compression plate is located directly above the disinfection tank.

[0012] As a further scheme of the present invention, the exhaust mechanism includes an outlet pipe fixedly installed on the sealing top cover, the lower end of the outlet pipe is fixedly connected to the upper end of the sauerkraut fermentation tank, both sides of the upper surface of the outlet pipe are fixedly connected with support rods, and the upper end of the support rods is fixedly connected with a top plate, a sliding rod passes through the top plate, and the sliding rod is slidably connected to the top plate, the lower end of the sliding rod is fixedly connected with a pressure plate, and a spring is sleeved on the circumferential surface of the sliding rod, and the two ends of the spring are respectively fixedly connected to the surface of the pressure plate and the bottom surface of the top plate.

[0013] In addition, the present invention also provides a fermentation method of a sauerkraut fermentation device with a constant temperature effect, comprising the following steps: Step 1: First, check whether each device is operating normally. Then, place the cleaned sauerkraut in the disinfection tank on the fixed disc, add food-grade disinfectant, start the hydraulic rod, drive the pressing disc to descend and press the vegetables, so that the surface of the vegetables contacts the disinfectant to accelerate the penetration of the disinfectant. The hydraulic rod drives the pressing disc to recover and discharge the water. Start the double-axis motor to drive the screws on both sides to rotate, so that the threaded slider moves on the surface of the screw, driving the limit shaft to disengage from the fixed disc, start the rotating motor, and drive the fixed disc to rotate through the fixed shaft, so that the sauerkraut with disinfected surface slides into the sauerkraut fermentation tank through the conveying member; Step 2: After the disinfected sauerkraut enters the sauerkraut fermentation tank, a sealed top cover is put on, and the temperature in the sauerkraut fermentation tank is detected by a temperature sensor. When cooling is required, the water pump is started, and the coolant in the water tank passes through the drain pipe, the condenser pipe and the return pipe in turn, and the cycle is repeated to control the temperature in the sauerkraut fermentation tank at 15-25°C to ensure that the sauerkraut is kept at a constant temperature during the fermentation process. When heating is required, the electric heating wire is started to heat the sauerkraut fermentation tank. At the same time, the servo motor is started to drive the driving gear to rotate through the transmission shaft. Under the cooperation of the driven gear and the rotating shaft, the stirring rod and the stirring paddle stir the sauerkraut in the sauerkraut fermentation tank to make the vegetables and the fermentation agent fully contact. Step 3. Carbon dioxide gas will be produced during the fermentation process. When the air pressure in the sauerkraut fermentation tank increases, the air pressure pushes the pressure plate upward, causing the spring to continue to compress, thereby causing the pressure plate to leave the air outlet pipe and the gas to be discharged, reducing the air pressure in the sauerkraut fermentation tank. The pressure in the sauerkraut fermentation tank is maintained at 0.15 - 0.2MPa to ensure the normal operation of the fermentation device. When the pH value of the sauerkraut reaches 3.2-3.8, open the sealed top cover and take out the sauerkraut. Wash the taken out sauerkraut to remove the fermentation residue on the surface.

[0014] Technical effects and advantages of the present invention: 1. Through the temperature control mechanism and stirring mechanism, after the sauerkraut enters the sauerkraut fermentation tank, the sealed top cover is covered, and the temperature in the sauerkraut fermentation tank is monitored in real time by the temperature sensor. When the temperature needs to be lowered, the water pump is started, and the coolant in the water tank circulates through the drain pipe, the condenser pipe and the return pipe to regulate the temperature in the sauerkraut fermentation tank. If the temperature needs to be raised, the electric heating wire is started for heating. At the same time, the servo motor is turned on to drive the driving gear to rotate through the transmission shaft. Under the coordinated action of the driven gear and the rotating shaft, the stirring rod and the stirring paddle stir the sauerkraut in the tank, so that the vegetables are fully in contact with the fermentation agent, which is conducive to the reproduction of lactic acid bacteria in a constant temperature environment. 2. Through the setting of the turning mechanism and the compacting mechanism, the sauerkraut is placed on the fixed disc in the disinfection tank before fermentation. After adding the food-grade disinfectant, the hydraulic rod is started to drive the compacting disc to press down the vegetables, so as to promote full contact between the vegetables and the disinfectant and accelerate the penetration of the disinfectant. After the disinfection is completed, the hydraulic rod drives the compacting disc to rise and discharge the water and disinfectant. Then, the double-axis motor is started to drive the screw rods on both sides to rotate, so that the threaded slider moves along the screw rod, driving the limit shaft to disengage from the fixed disc. Finally, the rotating motor is started to drive the fixed disc to rotate through the fixed shaft. The disinfected sauerkraut slides into the sauerkraut fermentation tank through the conveyor. This process avoids the secondary contamination of the sauerkraut caused by manual handling. 3. Through the exhaust mechanism set up, carbon dioxide gas will be produced during the sauerkraut fermentation process, causing the air pressure in the sauerkraut fermentation tank to increase. When the air pressure increases, it will push up the pressure plate and compress the spring to separate the pressure plate from the outlet pipe, allowing the gas to be discharged, thereby reducing the air pressure in the tank. The elastic force of the spring will push the pressure plate to reset, effectively preventing the backflow of external air, and only allowing the gas in the tank to be discharged, ensuring the normal operation of the fermentation device and avoiding deformation of the tank body due to the pressure in the tank exceeding the bearing limit of the tank wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the back three-dimensional structure of the present invention; Figure 3 It is a front cross-sectional structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the back part of the present invention; Figure 5 It is a partial three-dimensional structural schematic diagram of the present invention; Figure 6 It is a schematic diagram of the structure of the temperature control mechanism of the present invention; Figure 7 It is a schematic diagram of the stirring mechanism structure of the present invention; Figure 8 It is a schematic diagram of the structure of the flipping mechanism of the present invention; Fig. 9 It is a schematic diagram of the exhaust mechanism structure of the present invention.

[0016] In the figure: 1, sauerkraut fermentation tank; 2, fixed plate; 3, mounting frame; 4, support column; 5, temperature control mechanism; 6, turning mechanism; 7, compacting mechanism; 8, stirring mechanism; 9, exhaust mechanism; 10, mounting seat; 11, control box; 12, conveying member; 13, sealing top cover; 14, disinfection tank; 15, temperature sensor; 16, heating wire; 17, housing; 501, water tank; 502, drain pipe; 503, water pump; 504, condenser; 505, return pipe; 506, water inlet pipe; 601, fixed disc; 602 , rotating motor; 603, fixed shaft; 604, double-axis motor; 605, lead screw; 606, threaded slider; 607, connecting rod; 608, limit shaft; 701, fixed frame; 702, hydraulic rod; 703, clamping plate; 801, servo motor; 802, transmission shaft; 803, driving gear; 804, rotating shaft; 805, driven gear; 806, stirring rod; 807, stirring paddle; 901, exhaust pipe; 902, pressure plate; 903, support rod; 904, spring; 905, top plate; 906, sliding rod. DETAILED DESCRIPTION

[0017] 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.

[0018] Example 1

[0019] Please refer to the attached Figure 1 - Attachment Figure 7A sauerkraut fermentation device with a constant temperature function comprises a sauerkraut fermentation tank 1 and a fixed plate 2, four groups of support columns 4 are fixedly installed on the left end of the surface of the fixed plate 2, and a mounting frame 3 is fixedly installed between the right end of the surface and the support columns 4, a shell 17 is fixedly installed on the outside of the sauerkraut fermentation tank 1, and a sealed top cover 13 is provided on the top, a temperature sensor 15 is fixedly installed on the bottom surface of the sealed top cover 13 and located inside the sauerkraut fermentation tank 1, an electric heating wire 16 is fixedly installed on the inner bottom surface of the shell 17, a temperature control mechanism 5 is provided between the sauerkraut fermentation tank 1 and the shell 17 and outside, and a stirring mechanism 8 is provided inside the sauerkraut fermentation tank 1, the temperature control mechanism 5 comprises a water tank 501 fixedly installed on the bottom of the left side of the fixed plate 2, and the water tank 501 is connected to the water tank 501 through a drainage pipe 5 02 is connected to a water pump 503, and the water pump 503 is fixedly connected to a return pipe 505 through a condenser pipe 504. The stirring mechanism 8 includes a servo motor 801 fixedly mounted on the outer surface of the right side of the mounting frame 3, and the servo motor 801 is fixedly mounted with a driving gear 803 through a transmission shaft 802. The sauerkraut fermentation tank 1 is connected to a driven gear 805 through a rotating shaft 804, and the rotating shaft 804 is fixedly connected with a stirring paddle 807 through a stirring rod 806. The tops of the four groups of support columns 4 are commonly fixedly connected to a mounting seat 10, and a disinfection tank 14 is fixedly mounted at the inner axis of the mounting seat 10. A flipping mechanism 6 and a compacting mechanism 7 are respectively provided on the side and the upper part of the mounting seat 10. A control box 1 is fixedly mounted on the left bottom of the fixed plate 2 and located in front of the water tank 501. 1, a conveying member 12 is fixedly installed between the disinfection tank 14 and the tank mouth of the sauerkraut fermentation tank 1, an exhaust mechanism 9 is provided on one side of the top of the sealing top cover 13, one end of the drain pipe 502 is fixedly connected to the bottom of the water tank 501, and the drain pipe 502 extends to the inside of the water tank 501, and the other end is fixedly connected to the input end of the water pump 503, the condenser 504 is fixedly installed on the inner wall of the shell 17 in a spiral shape, and one end is fixedly connected to the output end of the water pump 503, and the other end is fixedly connected to the return pipe 505, the end of the return pipe 505 away from the condenser 504 is fixedly installed on the upper end of the water tank 501, and the return pipe 505 extends to the inside of the water tank 501, a water inlet pipe 506 is fixedly installed on the upper end of one side of the water tank 501, and the transmission shaft 802 passes through The right side of the mounting frame 3 is fixedly connected to the output end of the servo motor 801, and the transmission shaft 802 is rotatably connected to the right side of the mounting frame 3. The driving gear 803 is fixedly installed on the end of the transmission shaft 802 away from the servo motor 801 and is located inside the mounting frame 3. The bottom and top ends of the rotating shaft 804 are rotatably connected to the inner bottom surface of the sauerkraut fermentation tank 1 and the inner top surface of the mounting frame 3 respectively, and the rotating shaft 804 is rotatably connected to the inside of the sealing top cover 13. The driven gear 805 is fixedly installed on the circumferential surface of the rotating shaft 804 and is located inside the mounting frame 3. The stirring rod 806 is provided with multiple groups and is evenly fixedly installed on the circumferential surface of the rotating shaft 804. The stirring paddle 807 is fixedly installed on the end of the stirring rod 806 away from the rotating shaft 804.The surface of the stirring paddle 807 away from the stirring rod 806 is in contact with the inner wall of the sauerkraut fermentation tank 1, and the driving gear 803 is meshed and connected with the driven gear 805.

[0020] The water pump 503 and the heating wire 16 do not work independently, but are coordinated by the control box 11 to achieve constant temperature. In actual operation, temperature fluctuations may occur. For example, when the ambient temperature changes greatly or the heat generated by the metabolism of microorganisms in the fermentation process suddenly increases, the temperature may deviate from the set value. At this time, the control box 11 will quickly determine whether to start the water pump 503 or the heating wire 16 based on the feedback of the temperature sensor 15. When the temperature is low, the growth and reproduction rate of the beneficial microorganisms of lactic acid bacteria is slow, resulting in a significant extension of the fermentation cycle. For example, it may take weeks or even months to complete the fermentation in winter. On the contrary, when the temperature is too high, it is easy to breed miscellaneous bacteria, causing the sauerkraut to deteriorate and have peculiar smell and soft and rotten problems. The quality of sauerkraut is seriously affected, so the fermentation temperature needs to be controlled. During the stirring process, the stirring speed is a key factor. During the fermentation process, the stirring speed is generally controlled at 60 revolutions per minute. This speed range is relatively low and will not produce a violent stirring effect. The stirring frequency will also affect the integrity of the sauerkraut. In the early stage of fermentation, the stirring frequency should be appropriately increased, such as stirring once every two hours or so, and stirring for ten to fifteen minutes each time. At this time, the vegetable pieces are still relatively complete. Through proper stirring, the fermentation agent can be better attached to the surface of the vegetables. The control box 11 is electrically connected to the heating wire 16, the water pump 503 and the temperature sensor 15, and can provide real-time feedback on the temperature in the sauerkraut fermentation tank 1 and control the operation of the heating wire 16 and the water pump 503.

[0021] Specifically, after the sauerkraut enters the sauerkraut fermentation tank 1, the sealed top cover 13 is covered, and the temperature in the sauerkraut fermentation tank 1 is detected by the temperature sensor 15. When cooling is required, the water pump 503 is started, and the coolant in the water tank 501 passes through the drain pipe 502, the condenser 504 and the return pipe 505 in turn, and the cycle is repeated to control the temperature in the sauerkraut fermentation tank 1 at 15-25°C to ensure that the sauerkraut is in a constant temperature state during the fermentation process. When heating is required, the heating wire 16 is started to heat the sauerkraut fermentation tank 1. At the same time, the servo motor 801 is started to drive the driving gear 803 to rotate through the transmission shaft 802. With the cooperation of the driven gear 805 and the rotating shaft 804, the stirring rod 806 and the stirring paddle 807 stir the sauerkraut in the sauerkraut fermentation tank 1, so that the vegetables and the fermentation agent can be fully contacted, and the reproduction of lactic acid bacteria under constant temperature conditions is promoted.

[0022] Example 2

[0023] Please refer to the attached Figure 1 - Attachment Figure 5 And attached Figure 8, and on the basis of Example 1, it is further obtained that the flip mechanism 6 includes a rotating motor 602 fixedly mounted on the right side surface of the mounting seat 10 and a double-axis motor 604 on the left side surface, the output end of the rotating motor 602 is fixedly mounted with a fixed shaft 603, and the fixed shaft 603 is rotatably connected to the inside of the mounting seat 10, the circumferential surface of the fixed shaft 603 is fixedly mounted with a fixed disk 601, and the fixed disk 601 is movably mounted inside the mounting seat 10, both ends of the double-axis motor 604 are fixedly mounted with screw rods 605, and the threads of the two sets of screw rods 605 are arranged oppositely, and the circumferential surfaces of the two sets of screw rods 605 are threadedly connected with threaded Slider 606, a connecting rod 607 is fixedly installed on one side surface of the threaded slider 606, and a limiting shaft 608 is fixedly installed on one end of the connecting rod 607 away from the threaded slider 606, and the limiting shaft 608 is slidably connected to the inside of the mounting seat 10, and limiting holes matching the limiting shaft 608 are opened on both sides of the circumferential surface of the fixed disc 601. The compacting mechanism 7 includes a fixed frame 701 fixedly installed on the surface of the mounting seat 10, and two groups of hydraulic rods 702 are fixedly installed on the upper end of the fixed frame 701. The output ends of the two groups of hydraulic rods 702 are jointly fixedly installed with a clamping plate 703, and the clamping plate 703 is located directly above the disinfection tank 14.

[0024] A sealing ring is provided between the fixed disc 601 and the mounting seat 10 to prevent the disinfectant from flowing out of the gap. The impurities and microorganisms on the surface of the vegetables are reduced after cleaning and disinfection. During the constant temperature fermentation process, the temperature fluctuation caused by abnormal metabolic activity of microorganisms is reduced. For example, if there are a large number of bacteria that have not been cleaned off on the surface of the vegetables, these bacteria may multiply in large numbers at the beginning of fermentation. Their metabolic activities will generate heat, which may cause the temperature in the fermentation tank to exceed the range set by the constant temperature control system. The vegetables that have been cleaned and disinfected can effectively avoid this situation, which is conducive to the constant temperature system to better maintain a stable fermentation temperature. The vegetables that have been cleaned and disinfected make it easier for lactic acid bacteria to become the dominant flora at the beginning of fermentation. In a constant temperature environment, lactic acid bacteria can carry out fermentation activities more efficiently and produce lactic acid at the expected rate, thereby ensuring the normal fermentation of sauerkraut.

[0025] Specifically, before the sauerkraut enters the fermentation stage, it is first placed in the disinfection tank 14 and on the fixed disc 601, then food-grade disinfectant is added, and the hydraulic rod 702 is started to drive the pressing plate 703 to descend and press the vegetables, so that the surface of the vegetables contacts the disinfectant to accelerate the penetration of the disinfectant. The hydraulic rod 702 drives the pressing plate 703 to retract, and the dual-axis motor 604 is started to drive the screw rods 605 on both sides to rotate, so that the threaded slider 606 moves on the surface of the screw rod 605, driving the limiting shaft 608 to disengage from the fixed disc 601, and the rotating motor 602 is started to drive the fixed disc 601 to rotate through the fixed shaft 603, so that the sauerkraut with disinfected surface can slide into the sauerkraut fermentation tank 1 through the conveying member 12, thereby avoiding contamination of the disinfected sauerkraut by manual handling.

[0026] Example 3

[0027] Please refer to the attached Figure 1 - Attachment Figure 5 And attached Fig. 9 , and on the basis of Example 2, it is further obtained that the exhaust mechanism 9 includes an exhaust pipe 901 fixedly installed on the sealing top cover 13, the lower end of the exhaust pipe 901 is fixedly connected to the upper end of the sauerkraut fermentation tank 1, both sides of the upper surface of the exhaust pipe 901 are fixedly connected with support rods 903, and the upper end of the support rod 903 is fixedly connected with a top plate 905, a sliding rod 906 passes through the top plate 905, and the sliding rod 906 is slidably connected to the top plate 905, the lower end of the sliding rod 906 is fixedly connected with a pressing plate 902, and a spring 904 is sleeved on the circumferential surface of the sliding rod 906, and the two ends of the spring 904 are respectively fixedly connected to the surface of the pressing plate 902 and the bottom surface of the top plate 905.

[0028] When the gas pressure in the sauerkraut fermentation tank 1 is too high, the pressure plate 902 will be lifted to contract the spring 904. When the gas release pressure decreases, the spring 904 returns to its original position to push the pressure plate 902 into the air outlet pipe 901, thereby preventing outside air from entering.

[0029] Specifically, carbon dioxide gas is generated during the fermentation process. When the air pressure in the sauerkraut fermentation tank 1 increases, the air pressure pushes the pressure plate 902 upward, causing the spring 904 to be continuously compressed, thereby causing the pressure plate 902 to leave the air outlet pipe 901, and the gas is discharged, reducing the air pressure in the sauerkraut fermentation tank 1. The spring 904 squeezes the pressure plate 902 to prevent the outside air from flowing back into the sauerkraut fermentation tank 1, and only allows the gas in the sauerkraut fermentation tank 1 to be discharged, so that the pressure in the sauerkraut fermentation tank 1 is maintained at 0.15-0.2MPa, ensuring the normal operation of the fermentation device and preventing the pressure in the sauerkraut fermentation tank 1 from exceeding the limit that the tank wall can withstand, causing the tank body to deform.

[0030] Working principle of the present invention: The present invention is a sauerkraut fermentation device with constant temperature effect and a fermentation method thereof. First, check whether each device is operating normally. Then, place the cleaned sauerkraut in the disinfection tank 14 and on the fixed disc 601. Then add food-grade disinfectant, start the hydraulic rod 702, drive the pressing plate 703 to descend and press the vegetables, so that the vegetable surface contacts the disinfectant and accelerates the penetration of the disinfectant. After a period of time, the hydraulic rod 702 drives the pressing plate 703 to recycle and discharge water and disinfectant. Start the dual-axis motor 604 to drive the screw rods 605 on both sides to rotate, so that the thread slides. The block 606 moves on the surface of the screw rod 605, driving the limit shaft 608 to disengage from the fixed disc 601, starting the rotating motor 602, driving the fixed disc 601 to rotate through the fixed shaft 603, so that the sauerkraut with disinfected surface slides into the sauerkraut fermentation tank 1 through the conveying member 12, and the sealing top cover 13 is covered. The temperature in the sauerkraut fermentation tank 1 is detected by the temperature sensor 15. When cooling is required, the water pump 503 is started, and the coolant in the water tank 501 passes through the drain pipe 502, the condenser pipe 504 and the return pipe 505 in turn, and the cycle is repeated to control the temperature in the sauerkraut fermentation tank 1 at 15 - 25℃, to ensure that the sauerkraut is kept at a constant temperature during fermentation. When heating is required, the heating wire 16 is started to heat the sauerkraut fermentation tank 1. At the same time, the servo motor 801 is started to drive the driving gear 803 to rotate through the transmission shaft 802. With the cooperation of the driven gear 805 and the rotating shaft 804, the stirring rod 806 and the stirring paddle 807 stir the sauerkraut in the sauerkraut fermentation tank 1 to make the vegetables and the fermentation agent fully contact. Carbon dioxide gas will be generated during the fermentation process. When the air pressure in the sauerkraut fermentation tank 1 increases, the air pressure pushes the pressure plate 902 upward, so that the spring 904 is continuously compressed, so that the pressure plate 902 leaves the air outlet pipe 901, and the gas is discharged, which can reduce the air pressure in the sauerkraut fermentation tank 1 and maintain the pressure in the sauerkraut fermentation tank 1 at 0.15-0.2MPa to ensure the normal operation of the fermentation device. When the pH value of the sauerkraut reaches 3.2-3.8, the sealing top cover 13 is opened to take out the sauerkraut, and the taken out sauerkraut is cleaned to remove the fermentation residue on the surface.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sauerkraut fermentation device with a constant temperature function, comprising a sauerkraut fermentation tank (1) and a fixing plate (2), characterized in that: Four groups of support columns (4) are fixedly mounted on the left end of the surface of the fixed plate (2), and a mounting frame (3) is fixedly mounted between the right end of the surface and the support columns (4); a shell (17) is fixedly mounted on the outside of the sauerkraut fermentation tank (1), and a sealed top cover (13) is provided on the top; a temperature sensor (15) is fixedly mounted on the bottom surface of the sealed top cover (13) and located inside the sauerkraut fermentation tank (1); an electric heating wire (16) is fixedly mounted on the inner bottom surface of the shell (17); a temperature control mechanism (5) is provided between the sauerkraut fermentation tank (1) and the shell (17) and outside the sauerkraut fermentation tank (1); and a stirring mechanism (8) is provided inside the sauerkraut fermentation tank (1); the temperature control mechanism (5) comprises a water tank (501) fixedly mounted on the bottom of the left side of the fixed plate (2); the water tank (501) is connected to a water pump (503) via a drainage pipe (502); and the water pump (503) is fixedly connected to a return pipe (505) via a condenser pipe (504); The stirring mechanism (8) comprises a servo motor (801) fixedly mounted on the right outer surface of the mounting frame (3); the servo motor (801) is fixedly mounted with a driving gear (803) via a transmission shaft (802); the sauerkraut fermentation tank (1) is connected to a driven gear (805) via a rotating shaft (804); and the rotating shaft (804) is fixedly connected to a stirring paddle (807) via a stirring rod (806).

2. The sauerkraut fermentation device with constant temperature function according to claim 1, characterized in that: The tops of the four groups of support columns (4) are commonly fixedly connected to a mounting base (10), a disinfection tank (14) is fixedly mounted at the inner axis of the mounting base (10), a flipping mechanism (6) and a compacting mechanism (7) are respectively provided on the side and the top of the mounting base (10), a control box (11) is fixedly mounted on the left bottom of the fixed plate (2) and located in front of the water tank (501), a conveying member (12) is fixedly mounted between the disinfection tank (14) and the tank mouth of the sauerkraut fermentation tank (1), and an exhaust mechanism (9) is provided on one side of the top of the sealing top cover (13).

3. The sauerkraut fermentation device with constant temperature function according to claim 1, characterized in that: One end of the drain pipe (502) is fixedly connected to the bottom of the water tank (501), and the drain pipe (502) extends into the interior of the water tank (501), while the other end is fixedly connected to the input end of the water pump (503). The condenser pipe (504) is fixedly installed on the inner wall of the housing (17) in a spiral shape, and one end is fixedly connected to the output end of the water pump (503), and the other end is fixedly connected to the return pipe (505). One end of the return pipe (505) away from the condenser pipe (504) is fixedly installed on the upper end of the water tank (501), and the return pipe (505) extends into the interior of the water tank (501). An inlet pipe (506) is fixedly installed on the upper end of one side of the water tank (501).

4. The sauerkraut fermentation device with constant temperature function according to claim 1, characterized in that: The transmission shaft (802) passes through the right side of the mounting frame (3) and is fixedly connected to the output end of the servo motor (801), and the transmission shaft (802) is rotatably connected to the inside of the right side of the mounting frame (3). The driving gear (803) is fixedly mounted on the end of the transmission shaft (802) away from the servo motor (801) and is located inside the mounting frame (3). The bottom end and the top end of the rotating shaft (804) are rotatably connected to the inner bottom surface of the sauerkraut fermentation tank (1) and the inner top surface of the mounting frame (3), respectively, and the rotating shaft (804) is rotatably connected to the inside of the sealing top cover (13). The driven gear (805) is fixedly mounted on the circumferential surface of the rotating shaft (804) and is located inside the mounting frame (3).

5. The sauerkraut fermentation device with constant temperature function according to claim 1, characterized in that: The stirring rods (806) are provided in multiple groups and are evenly fixedly mounted on the circumferential surface of the rotating shaft (804); the stirring paddle (807) is fixedly mounted on one end of the stirring rod (806) away from the rotating shaft (804); and a side surface of the stirring paddle (807) away from the stirring rod (806) contacts the inner wall of the sauerkraut fermentation tank (1); and the driving gear (803) is meshingly connected with the driven gear (805).

6. The sauerkraut fermentation device with constant temperature function according to claim 2, characterized in that: The flip mechanism (6) comprises a rotating motor (602) fixedly mounted on the right side surface of the mounting seat (10) and a double-axis motor (604) on the left side surface; a fixed shaft (603) is fixedly mounted on the output end of the rotating motor (602), and the fixed shaft (603) is rotatably connected to the inside of the mounting seat (10); a fixed disc (601) is fixedly mounted on the circumferential surface of the fixed shaft (603), and the fixed disc (601) is movably mounted inside the mounting seat (10); screw rods are fixedly mounted on both ends of the double-axis motor (604); (605), and the two groups of screw rods (605) are arranged with threads in opposite directions, the circumferential surfaces of the two groups of screw rods (605) are threadedly connected with threaded sliders (606), a connecting rod (607) is fixedly installed on one side surface of the threaded slider (606), and a limiting shaft (608) is fixedly installed on one end of the connecting rod (607) away from the threaded slider (606), and the limiting shaft (608) is slidably connected to the inside of the mounting seat (10), and limiting holes matching the limiting shaft (608) are opened on both sides of the circumferential surface of the fixed disk (601).

7. The sauerkraut fermentation device with constant temperature function according to claim 2, characterized in that: The compacting mechanism (7) comprises a fixing frame (701) fixedly mounted on the surface of the mounting seat (10), two groups of hydraulic rods (702) being fixedly mounted on the upper end of the fixing frame (701), a pressing plate (703) being fixedly mounted on the output ends of the two groups of hydraulic rods (702), and the pressing plate (703) being located directly above the disinfection tank (14).

8. The sauerkraut fermentation device with constant temperature function according to claim 2, characterized in that: The exhaust mechanism (9) comprises an exhaust pipe (901) fixedly mounted on the sealing top cover (13); the lower end of the exhaust pipe (901) is fixedly connected to the upper end of the sauerkraut fermentation tank (1); both sides of the upper surface of the exhaust pipe (901) are fixedly connected to support rods (903); the upper end of the support rods (903) is fixedly connected to a top plate (905); a sliding rod (906) passes through the top plate (905); the sliding rod (906) is slidably connected to the top plate (905); the lower end of the sliding rod (906) is fixedly connected to a pressing plate (902); a spring (904) is sleeved on the circumferential surface of the sliding rod (906); the two ends of the spring (904) are respectively fixedly connected to the surface of the pressing plate (902) and the bottom surface of the top plate (905).

9. A fermentation method for the sauerkraut fermentation device with constant temperature function applicable to any one of claims 1 to 8, characterized in that: The specific steps are as follows: Step 1: First, check whether each device is operating normally. Then, place the cleaned sauerkraut in the disinfection tank (14) and on the fixed disc (601). Then, add food-grade disinfectant. Start the hydraulic rod (702) to drive the pressing disc (703) to descend and press the vegetables so that the surface of the vegetables contacts the disinfectant to accelerate the penetration of the disinfectant. The hydraulic rod (702) drives the pressing disc (703) to recycle and discharge water. Start the double-axis motor (604) to drive the screw rods (605) on both sides to rotate, so that the threaded slider (606) moves on the surface of the screw rod (605), driving the limit shaft (608) to disengage from the fixed disc (601). Start the rotating motor (602) to drive the fixed disc (601) to rotate through the fixed shaft (603), so that the sauerkraut with the disinfected surface slides into the sauerkraut fermentation tank (1) through the conveying member (12); Step 2: After the disinfected sauerkraut enters the sauerkraut fermentation tank (1), the sealed top cover (13) is put on, and the temperature in the sauerkraut fermentation tank (1) is detected by a temperature sensor (15). When cooling is required, the water pump (503) is started, and the coolant in the water tank (501) passes through the drain pipe (502), the condenser pipe (504) and the return pipe (505) in sequence, and the cycle is repeated to control the temperature in the sauerkraut fermentation tank (1) at 15-25° C., ensuring that the sauerkraut is kept at a constant temperature during the fermentation process. When heating is required, the electric heating wire (16) is started to heat the sauerkraut fermentation tank (1). At the same time, the servo motor (801) is started to drive the driving gear (803) to rotate through the transmission shaft (802). Under the cooperation of the driven gear (805) and the rotating shaft (804), the stirring rod (806) and the stirring paddle (807) stir the sauerkraut in the sauerkraut fermentation tank (1) so that the vegetables and the fermentation agent are fully in contact. Step 3: During the fermentation process, carbon dioxide gas is generated. When the air pressure in the sauerkraut fermentation tank (1) increases, the air pressure pushes the pressure plate (902) upward, causing the spring (904) to be continuously compressed, thereby causing the pressure plate (902) to leave the air outlet pipe (901), and the gas is discharged, thereby reducing the air pressure in the sauerkraut fermentation tank (1) and maintaining the pressure in the sauerkraut fermentation tank (1) at 0.15-0.2MPa to ensure the normal operation of the fermentation device. When the pH value of the sauerkraut reaches 3.2-3.8, the sealed top cover (13) is opened to take out the sauerkraut, and the taken-out sauerkraut is cleaned to remove the fermentation residue on the surface.

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