Fermentation tank for yeast production

Abstract

The invention relates to the technical field of fermentation, in particular to a fermentation tank for yeast production, the fermentation tank for yeast production comprises a tank body, a stirring mechanism, a control mechanism and an air supply mechanism, the stirring mechanism comprises a top stirrer, a bottom stirrer and a plurality of middle stirrers which can rotate; the air supply mechanism is configured to be capable of introducing sterile air into the tank body; the control mechanism comprises a plurality of first control assemblies and a plurality of second control assemblies; the plurality of first control assemblies and the plurality of second control assemblies are arranged corresponding to the top stirrer, the middle stirrer and the bottom stirrer; the first control assembly is configured to control the top stirrer to synchronously drive the middle stirrer above the liquid level to rotate; the second control assembly is configured to control the bottom stirrer to synchronously drive the middle stirrer below the liquid level to rotate and drive the top stirrer and the bottom stirrer to rotate relatively, so that the interior of the tank body can be stirred, and foam can be broken through clamping.

Description

Technical Field

[0001] The invention relates to the technical field of fermentation, in particular to a fermentation tank for yeast production. Background Art

[0002] Yeast is a single-celled fungal microorganism that is widely found in nature, such as soil, water, and plant surfaces. It can ferment sugar into alcohol and carbon dioxide, so it is widely used in the food industry, such as brewing and baking.

[0003] Yeast powder refers to a substance in which yeast has not been decomposed, but the nutrients of yeast extract powder have been decomposed, and the speed and efficiency of microbial absorption and utilization are higher, and there is less fermentation residue. In the production process of yeast powder, a fermentation tank is needed. In the related technology, for example, Chinese patent CN21264046U discloses a fermentation tank for yeast powder production and fermentation. When the fermentation tank for yeast powder production and fermentation is used, a certain amount of material is first introduced into the fermentation tank, and then the driving motor is started to make the main gear mesh with the first gear and the second gear, thereby driving the sleeve and the rotating rod to rotate, so that the stirring rod can fully stir the material; at the same time, check the thermometer, start the hydraulic pump or start the power supply according to the actual temperature of the thermometer, so as to cool down or heat up, and check the pH electrode to know the pH value in the yeast powder production process.

[0004] Although the above-mentioned fermentation tank for yeast powder production and fermentation can improve the production quality of yeast powder to a certain extent, it is found in actual use that during fermentation, a large amount of foam will be generated above the surface of the fermentation liquid. These foams will cause a large amount of liquid to escape, causing the fermentation liquid to escape from the exhaust pipe or the shaft seal. On the one hand, it will affect the fermentation efficiency of the yeast powder, and on the other hand, it will affect the sealing of the fermentation tank, causing external bacteria to easily enter the fermentation tank, resulting in fermentation failure. Summary of the invention

[0005] Based on this, it is necessary to provide a fermentation tank for yeast production to address the problems of low fermentation efficiency and low yield in the current yeast production process.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A fermentation tank for yeast production, comprising:

[0008] The tank body is placed vertically;

[0009] A stirring mechanism is inserted in the tank body, the stirring mechanism comprises a top stirrer, a bottom stirrer and a plurality of middle stirrers, each of which is capable of self-rotation, the top stirrer, the middle stirrer and the bottom stirrer are arranged in sequence from top to bottom along the axis direction of the tank body;

[0010] A control mechanism is inserted inside the tank body, the control mechanism includes a plurality of first control components and a plurality of second control components, the first control components are configured to control the top agitator to synchronously drive the middle agitator above the liquid surface to rotate; the second control components are configured to control the bottom agitator to synchronously drive the middle agitator below the liquid surface to rotate;

[0011] The top stirrer and the bottom stirrer rotate relative to each other to break the foam;

[0012] An air supply mechanism is configured to be able to introduce sterile air into the interior of the tank body.

[0013] Furthermore, the top agitator, the bottom agitator and the middle agitator each include a support rod and a plurality of spiral blades arranged on the support rod, and the plurality of spiral blades on the same support rod are arranged circumferentially; the support rods of the top agitator, the bottom agitator and the middle agitator can rotate relative to each other; the spiral blades of the top agitator, the bottom agitator and the middle agitator are arranged correspondingly and can together form a spiral blade.

[0014] Furthermore, the first control component includes a first slide and multiple first control parts, the first slide is set to a spiral structure and is opened in parallel on the side wall surface of the spiral blade; the multiple first control parts and the top agitator, the bottom agitator, and the middle agitator are arranged one by one; the first control part includes a first stopper, a first slider and a first elastic member, the first stopper is fixedly set on the side wall surface of the spiral blade; the first slider is slidably set on the first slide and is located below the first stopper; the first elastic member is connected between the first stopper and the first slider, and under the action of the first elastic member, the first slider has a tendency to move away from the first stopper.

[0015] Further, the second control assembly includes a second slide and a plurality of second control parts, the second slide is set as a spiral structure and is parallelly opened on the side wall surface of the spiral blade; the plurality of second control parts are arranged one by one with the top agitator, the bottom agitator and the middle agitator; the second control part includes a second stopper, a second slider, a second elastic member and a slide, the second stopper is fixedly arranged on the side wall surface of the spiral blade; the second slider is slidably arranged on the second slide and is located above the second stopper; the second elastic member is connected between the second stopper and the second slider, and under the action of the second elastic member, the second slider has a tendency to move in a direction close to the second stopper; the slide is inserted into the spiral blade and can slide elastically along the axial direction perpendicular to the tank body, and has a corresponding first position and a second position before and after sliding, when the slide is located above the liquid surface, the slide is located at the first position and is engaged with the second slider to limit the position of the second slider; when the slide is located below the liquid surface, the slide is located at the second position and is disengaged from the second slider.

[0016] Furthermore, the second control part also includes a third elastic member, and the third elastic member is connected between the spiral blade and the slide. Under the action of the third elastic member, the slide has a tendency to extend out of the spiral blade.

[0017] Furthermore, along the axial direction of the tank body, the stiffness coefficient of the third elastic member decreases from bottom to top.

[0018] Furthermore, the air supply mechanism includes an air supply portion and a plurality of air supply holes, the air supply holes are arranged on the spiral blades and are arranged corresponding to the slide, when the slide is in the first position, the slide is used to close the air supply holes; when the slide is in the second position, the air supply holes are opened; the air supply portion is configured to be able to introduce sterile air into the plurality of air supply holes.

[0019] Furthermore, the top agitator and the bottom agitator have opposite directions of rotation.

[0020] Furthermore, the yeast production fermentation tank also includes a driving mechanism, and the driving mechanism is configured to provide a driving force for the top agitator and the bottom agitator to rotate.

[0021] Furthermore, the yeast production fermentation tank also includes a temperature control mechanism, and the temperature control mechanism is configured to control the temperature inside the tank body to a preset temperature.

[0022] The beneficial effects of the present invention are:

[0023] When a fermentation tank for yeast production provided by the present invention is used, raw materials and fermentation liquid are first added into the interior of the tank body, and then sterile air is introduced into the interior of the tank body through an air supply mechanism; at the same time, the top agitator and the bottom agitator are driven to rotate relative to each other, and the top agitator is controlled to synchronously drive the middle agitator above the liquid surface to rotate under the action of a first control component, and the bottom agitator is controlled to synchronously drive the middle agitator below the liquid surface to rotate under the action of a second control component; during the rotation of the bottom agitator, the bottom agitator synchronously drives the middle agitator below the liquid surface to stir the raw materials and the fermentation liquid, so as to improve the mixing efficiency of the raw materials and the fermentation liquid, thereby improving the fermentation efficiency; during the rotation of the top agitator, the top agitator synchronously drives the middle agitator above the liquid surface to rotate, so as to form a relative movement with the middle agitator below the liquid surface driven synchronously by the bottom agitator, so as to break the foam, reduce the occurrence of liquid escape, and ensure the normal progress of fermentation.

[0024] Furthermore, by arranging the stiffness coefficient of the third elastic member to decrease successively from bottom to top along the axial direction of the tank body, when the liquid level is low, the stiffness coefficient of the third elastic member located at the bottom is larger, so that it is more difficult for the corresponding slide to be retracted into the spiral blades, and then it is not easy for the bottom agitator to drive the middle agitator to rotate, thereby improving the bubble entrainment effect; when the liquid level is high, the stiffness coefficient of the third elastic member located at the top is smaller, so that the corresponding slide is easier to be retracted into the spiral blades, and then it is easier for the bottom agitator to drive the middle agitator to rotate, thereby improving the stirring effect.

[0025] Furthermore, by setting the top agitator and the bottom agitator to rotate in opposite directions, when in use, the intensity of the relative movement between the middle agitator above the liquid surface driven synchronously by the top agitator and the middle agitator below the liquid surface driven synchronously by the bottom agitator is made greater, thereby, on the one hand, improving the intensity of bubble entrainment, and on the other hand, allowing them to meet with a higher frequency, thereby improving the bubble entrainment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the three-dimensional structure of a fermentation tank for yeast production provided in one embodiment of the present invention Figure 1 ;

[0027] Figure 2 Schematic diagram of the three-dimensional structure of a fermentation tank for yeast production provided in one embodiment of the present invention Figure 2 ;

[0028] Figure 3 for Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0029] Figure 4 for Figure 2 A schematic diagram of the partially enlarged structure at B in the middle;

[0030] Figure 5 A schematic diagram of the front view of a fermentation tank for yeast production provided by one embodiment of the present invention;

[0031] Figure 6 for Figure 5 Middle CC section view;

[0032] Figure 7 for Figure 6 The schematic diagram of the local enlarged structure at D in the middle;

[0033] Figure 8 A schematic diagram of the three-dimensional structure of a slide frame and a second compression spring of a fermentation tank for yeast production provided by an embodiment of the present invention when assembled;

[0034] Fig. 9 This is a schematic diagram of the three-dimensional structure of the second slider and the tension spring of the yeast production fermentation tank provided by one embodiment of the present invention when they are assembled.

[0035] in:

[0036] 1. Tank body; 11. Feed pipe; 12. Discharge pipe; 121. Bottom cover; 13. Exhaust pipe; 14. Support legs;

[0037] 2. Stirring mechanism; 21. Top stirrer; 22. Middle stirrer; 23. Bottom stirrer; 24. Support rod; 25. Spiral blades;

[0038] 3. Control mechanism; 31. First control assembly; 311. First slideway; 312. First control unit; 3121. First stopper; 3122. First slider; 3123. First compression spring; 32. Second control assembly; 321. Second slideway; 322. Second control unit; 3221. Second stopper; 3222. Second slider; 32221. Slot; 3223. Tension spring; 3224. Slide; 32241. Wedge block; 3225. Second compression spring;

[0039] 4. air supply mechanism; 41. air supply ring; 42. air supply hole;

[0040] 5. Driving mechanism; 51. First driving motor; 52. Pulley; 53. Transmission belt; 54. Second driving motor;

[0041] 6. Temperature control mechanism; 61. Coolant inlet pipe; 62. Temperature control chamber; 63. Coolant outlet pipe. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned herein, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] like Figures 1 to 9 As shown, a yeast production fermentation tank provided by an embodiment of the present invention is used for producing yeast, and is configured to include a vertical tank body 1, a stirring mechanism 2, a control mechanism 3 and an air supply mechanism 4, wherein the stirring mechanism 2 is inserted into the tank body 1, and the stirring mechanism 2 includes a top agitator 21, a bottom agitator 23 and a plurality of intermediate agitators 22, all of which can rotate, and the top agitator 21, the intermediate agitator 22 and the bottom agitator 23 are arranged in sequence from top to bottom along the axial direction of the tank body 1; the control mechanism 3 is inserted into the tank body 1, and the control mechanism 3 includes a plurality of first control components 31 and a plurality of second control components 32, and the first control component 31 is configured to control the top agitator 21 to synchronously drive the intermediate agitator 22 above the liquid surface to rotate; the second control component 32 is configured to control the bottom agitator 23 to synchronously drive the intermediate agitator 22 below the liquid surface to rotate; the top agitator 21 and the bottom agitator 23 rotate relative to each other to break the foam; and the air supply mechanism 4 is configured to allow sterile air to be introduced into the tank body 1.

[0046] Specifically in this embodiment, Figure 1As shown, a feed pipe 11 and an exhaust pipe 13 are provided on the top of the tank body 1, wherein the feed pipe 11 is used to feed raw materials and fermentation liquid into the tank body 1, and the exhaust pipe 13 is used to discharge excess gas (such as carbon dioxide, etc.) inside the tank body 1; a discharge pipe 12 is provided at the bottom of the tank body 1, and the discharge pipe 12 is used to discharge fermented yeast; in order to facilitate the control of the opening or closing of the discharge pipe 12, a bottom cover 121 is hinged at the bottom opening of the discharge pipe 12, and the bottom cover 121 is detachably connected to the discharge pipe 12 by a pin; three legs 14 are provided at the bottom of the tank body 1, and the three legs 14 are evenly arranged along the circumference and used to support the tank body 1.

[0047] like Figure 2 As shown, the number of the intermediate agitators 22 can be three, and they are arranged in sequence along the axial direction of the tank body 1, and the top agitator 21 and the uppermost intermediate agitator 22, the adjacent intermediate agitators 22, and the lowermost intermediate agitator 22 and the bottom agitator 23 are all relatively rotatably connected; the number of the first control components 31 and the second control components 32 can be four, wherein the first first control component 31 and the first second control component 32 are both arranged corresponding to the top agitator 21, the second first control component 31 and the second second control component 32 are both arranged corresponding to the first intermediate agitator 22, the third first control component 31 and the third second control component 32 are both arranged corresponding to the second intermediate agitator 22, and the fourth first control component 31 and the fourth second control component 32 are both arranged corresponding to the third intermediate agitator 22.

[0048] The top agitator 21 and the bottom agitator 23 can both be set to rotate in the clockwise direction, and the rotation speed of the top agitator 21 can be set to be greater than the rotation speed of the bottom agitator 23, or can be set to be less than the rotation speed of the bottom agitator 23, so that through the same-direction differential rotation between the top agitator 21 and the bottom agitator 23, the middle agitator 22 above the liquid surface driven synchronously by the top agitator 21 and the middle agitator 22 below the liquid surface driven synchronously by the bottom agitator 23 form relative motion, thereby being able to break the foam.

[0049] Similarly, the top agitator 21 and the bottom agitator 23 can also be set to rotate in the counterclockwise direction, and the rotation speed of the top agitator 21 can be set to be greater than the rotation speed of the bottom agitator 23, or can be set to be less than the rotation speed of the bottom agitator 23.

[0050] Initially, the bottom cover 121 is closed on the discharge pipe 12 .

[0051] When in use, firstly, raw materials and fermentation liquid are added into the tank body 1 through the feed pipe 11, and then sterile air is introduced into the tank body 1 through the air supply mechanism 4; at the same time, the top agitator 21 and the bottom agitator 23 are driven to rotate in the same direction with a differential speed, and the top agitator 21 is controlled to synchronously drive the middle agitator 22 above the liquid surface to rotate under the action of the first control component 31, and the bottom agitator 23 is controlled to synchronously drive the middle agitator 22 below the liquid surface to rotate under the action of the second control component 32; during the rotation of the bottom agitator 23, the bottom agitator 23 synchronously drives the middle agitator 22 below the liquid surface to stir the raw materials and the fermentation liquid, so as to improve the mixing efficiency of the raw materials and the fermentation liquid, and then improve the fermentation efficiency; during the rotation of the top agitator 21, the top agitator 21 synchronously drives the middle agitator 22 above the liquid surface to rotate, so as to form a relative motion with the middle agitator 22 below the liquid surface driven synchronously by the bottom agitator 23, so as to break the foam, reduce the occurrence of liquid escape, and ensure the normal progress of fermentation; at the same time, the excess gas inside the tank body 1 is released through the exhaust pipe 13.

[0052] After the fermentation is completed, the bottom cover 121 is opened and the fermented yeast is taken out from the tank body 1 to facilitate the next step.

[0053] In some embodiments, the top agitator 21, the bottom agitator 23 and the middle agitator 22 are all configured to include a support rod 24 and a plurality of spiral blades 25 arranged on the support rod 24, and the plurality of spiral blades 25 on the same support rod 24 are arranged circumferentially; the support rods 24 on the top agitator 21, the bottom agitator 23 and the middle agitator 22 can rotate relative to each other; the spiral blades 25 on the top agitator 21, the bottom agitator 23 and the middle agitator 22 are correspondingly arranged and can together form a spiral blade.

[0054] Specifically in this embodiment, Figure 2 As shown, the support rod 24 is configured as a round rod structure and is coaxially arranged with the tank body 1 during installation; in order to facilitate the relative rotation between the support rods 24 on the top agitator 21, the bottom agitator 23 and the intermediate agitator 22, an insert ring is coaxially arranged at the bottom of the support rod 24 of the top agitator 21, and an annular groove is coaxially opened at the top of the support rod 24 of the first intermediate agitator 22, and the insert ring is slidably inserted in the annular groove during installation, and the connection method between other adjacent support rods 24 is the same; the number of spiral blades 25 on each support rod 24 can be set to three, and the three spiral blades 25 on the same support rod 24 are evenly arranged along the circumference during installation, and are all spirally arranged in the same direction. Any two spiral blades 25 on different support rods 24 can together form a complete spiral blade.

[0055] During the rotation of the bottom stirrer 23, the bottom stirrer 23 synchronously drives the intermediate stirrer 22 below the liquid surface to rotate self - sufficiently, so that under the guidance of the spiral blades, the liquid can be driven to move both axially and circumferentially, thereby improving the mixing efficiency between the raw materials and the fermentation broth.

[0056] In a further embodiment, the first control component 31 is arranged to include a first slideway 311 and a plurality of first control parts 312. The first slideway 311 is arranged in a spiral structure and is parallelly opened on the side wall surface of the spiral sub - blade 25; the plurality of first control parts 312 are arranged in one - to - one correspondence with the top stirrer 21, the bottom stirrer 23, and the intermediate stirrer 22; the first control part 312 includes a first stopper 3121, a first slider 3122, and a first elastic member. The first stopper 3121 is fixedly arranged on the side wall surface of the spiral sub - blade 25; the first slider 3122 is slidably arranged on the first slideway 311 and is located below the first stopper 3121; the first elastic member is connected between the first stopper 3121 and the first slider 3122, and under the action of the first elastic member, the first slider 3122 has a tendency to move away from the first stopper 3121.

[0057] Specifically in this embodiment, as Figure 3 shown, the shape of the first slideway 311 is arranged as a strip, and the number is two, and they are arranged at intervals and symmetrically on the spiral side wall of the spiral sub - blade 25; the first stopper 3121 is arranged as a "П" - shaped block structure, and the two sub - ends of the first stopper 3121 are fixedly inserted into the two first slideways 311 in one - to - one correspondence during installation; the first slider 3122 is arranged as a "匚" - shaped strip structure, and the opening faces the spiral side wall of the spiral sub - blade 25, and the two sub - ends of the first slider 3122 are slidably inserted into the two first slideways 311 in one - to - one correspondence during installation; the first elastic member can be arranged as a first compression spring 3123. The upper end of the first compression spring 3123 is fixedly connected to the bottom of the first stopper 3121, and the lower end is fixedly connected to the top of the first slider 3122 during installation. Under the action of the first compression spring 3123, the first slider 3122 has a tendency to move downward along the first slideway 311.

[0058] Initially, the first sliders 3122 are respectively located between the top stirrer 21 and the first intermediate stirrer 22, between the first intermediate stirrer 22 and the second intermediate stirrer 22, between the second intermediate stirrer 22 and the third intermediate stirrer 22, and between the third intermediate stirrer 22 and the bottom stirrer 23.

[0059] When in use, the first slider 3122 located above the liquid surface remains in place, so that the top agitator 21 can drive the intermediate agitator 22 located above the liquid surface to rotate through the connection between the first slider 3122 and the first slide 311; the first slider 3122 located below the liquid surface moves upward along the first slide 311 under the action of buoyancy to correspond to the third intermediate agitator 22, or moves to correspond to the third intermediate agitator 22 and the second intermediate agitator 22 at the same time, or moves to correspond to the third intermediate agitator 22, the second intermediate agitator 22, and the first intermediate agitator 22 at the same time, or moves to correspond to the third intermediate agitator 22, the second intermediate agitator 22, and the first intermediate agitator 22 at the same time, so as to disconnect the connection between the corresponding first slider 3122 and the first slide 311, so that the top agitator 21 cannot drive the intermediate agitator 22 located below the liquid surface to rotate.

[0060] In other embodiments, the second control component 32 is configured to include a second slide 321 and a plurality of second control parts 322, the second slide 321 is configured to be a spiral structure and is opened in parallel on the side wall surface of the spiral blade 25; the plurality of second control parts 322 and the top agitator 21, the bottom agitator 23, and the middle agitator 22 are arranged one by one; the second control part 322 includes a second stopper 3221, a second slider 3222, a second elastic member and a slide 3224, the second stopper 3221 is fixedly arranged on the side wall surface of the spiral blade 25; the second slider 3222 is slidably arranged on the second slide 321 and is located above the second stopper 3221; the second elastic member Connected between the second stopper 3221 and the second slider 3222, the second slider 3222 has a tendency to move toward the second stopper 3221 under the action of the second elastic member; the slide 3224 is inserted into the spiral blade 25, and can slide elastically along the axial direction perpendicular to the tank body 1, and has a corresponding first position and second position before and after sliding, when the slide 3224 is above the liquid surface, the slide 3224 is located at the first position, and is engaged with the second slider 3222 to limit the position of the second slider 3222; when the slide 3224 is below the liquid surface, the slide 3224 is located at the second position, and is disengaged from the second slider 3222.

[0061] Specifically in this embodiment, Figure 4As shown, the shape of the second slideway 321 is set to be strip-shaped, and the number is two, which are arranged at intervals and symmetrically on the spiral side wall of the spiral dividing blade 25; the second stopper 3221 is set to be a "П"-shaped block structure, and the two divided ends of the second stopper 3221 are fixedly inserted into the two second slideways 321 one by one during installation; the second slider 3222 is set to be a "匚"-shaped strip structure, and the opening faces the spiral side wall of the spiral dividing blade 25. The two divided ends of the second slider 3222 are slidably inserted into the two second slideways 321 one by one during installation; the second elastic member can be set to a tension spring 3223. When the tension spring 3223 is installed, the upper end is fixedly connected to the bottom of the second slider 3222, and the lower end is fixedly connected to the top of the second stopper 3221. Under the action of the tension spring 3223, the second slider 3222 has a tendency to move downward along the second slideway 321.

[0062] As Figure 8 shown, the carriage 3224 is set to be a "U"-shaped block structure. As Figure 7 shown, the carriage 3224 is horizontally inserted into the spiral dividing blade 25 during installation, and the opening faces inward; to facilitate the snap connection between the carriage 3224 and the second slider 3222, as Figure 8 shown, a wedge-shaped block 32241 is provided on the outer side of the closed end of the carriage 3224. As Fig. 9 shown, a card slot 32221 is opened on the concave end face of the second slider 3222, and the card slot 32221 is provided near the end where the second slider 3222 is connected to the tension spring 3223. The wedge-shaped block 32241 can be snap-connected to the card slot 32221.

[0063] Initially, the second sliders 3222 are respectively arranged corresponding to the three intermediate stirrers 22 and the bottom stirrer 23.

[0064] During use, the second slider 3222 located below the liquid level can move upward along the second slideway 321 under the action of buoyancy to between the bottom stirrer 23 and the third intermediate stirrer 22, or move to between the bottom stirrer 23 and the third intermediate stirrer 22, between the third intermediate stirrer 22 and the second intermediate stirrer 22 at the same time, or move to between the bottom stirrer 23 and the third intermediate stirrer 22, between the third intermediate stirrer 22 and the second intermediate stirrer 22, between the second intermediate stirrer 22 and the first intermediate stirrer 22 at the same time, or move to between the bottom stirrer 23 and the third intermediate stirrer 22, between the third intermediate stirrer 22 and the second intermediate stirrer 22, between the second intermediate stirrer 22 and the first intermediate stirrer 22, between the first intermediate stirrer 22 and the top stirrer 21 at the same time, so that the bottom stirrer 23 can drive the intermediate stirrer 22 or the intermediate stirrer 22 and the top stirrer 21 located below the liquid level to rotate by itself through the connection between the second slider 3222 and the second slideway 321.

[0065] The second slider 3222 located above the liquid surface remains in place, so that the bottom agitator 23 cannot drive the middle agitator 22 located above the liquid surface to rotate.

[0066] At the same time, the slide 3224 located above the liquid surface is in a state of extending out from the interior of the spiral blade 25 under the action of the third elastic member, so that the wedge block 32241 thereon is engaged with the slot 32221 to limit the position of the second slider 3222 and avoid movement interference caused by liquid disturbance; the slide 3224 located below the liquid surface and close to the liquid surface is in a state of extending out from the interior of the spiral blade 25 under the action of the third elastic member due to the small hydraulic pressure, so that the slide 3224 is in a state of extending out from the interior of the spiral blade 25 under the action of the third elastic member, so that the wedge block 32241 thereon is engaged with the slot 32221 to limit the position of the second slider 3222 and avoid conflict with the movement of the first slider 3122; the slide 3224 located below the liquid surface and deeper is in a state of retracting into the interior of the spiral blade 25 under the action of the hydraulic pressure, so that the wedge block 32241 thereon is engaged with the disengagement slot 32221, thereby enabling the corresponding second slider 3222 to move normally.

[0067] In a further embodiment, the second control part 322 is configured to further include a third elastic member, which is connected between the spiral blade 25 and the slide 3224 . Under the action of the third elastic member, the slide 3224 has a tendency to extend out of the spiral blade 25 .

[0068] Specifically in this embodiment, the third elastic member is configured as a second compression spring 3225, such as Figure 8 As shown, the second compression spring 3225 is inserted into the interior of the slide 3224 during installation and is fixedly connected to the inner side of the closed end of the slide 3224; Figure 7 As shown, the second compression spring 3225 is inserted into the spiral blade 25 during installation and abuts against the inner wall surface of the spiral blade 25. Under the action of the second compression spring 3225, the slide frame 3224 tends to extend out of the spiral blade 25.

[0069] In a further embodiment, the stiffness coefficients of the third elastic members decrease successively from bottom to top along the axial direction of the tank body 1 .

[0070] Specifically in this embodiment, since the stiffness coefficient of the spring is related to factors such as the material, length, thickness, etc. of the spring, in order to achieve a gradual decrease in the stiffness coefficient of the second compression spring 3225 from bottom to top along the axial direction of the tank body 1, it can be set that the outer diameter of the second compression spring 3225 increases gradually from bottom to top along the axial direction of the tank body 1; it can also be set that the wire diameter of the second compression spring 3225 gradually decreases from bottom to top along the axial direction of the tank body 1; it can also be set that the effective number of turns of the second compression spring 3225 gradually increases from bottom to top along the axial direction of the tank body 1.

[0071] During use, when the liquid level is low, the stiffness coefficient of the second compression spring 3225 located at the bottom is large, making it difficult for the corresponding slide 3224 to retract into the spiral blade 25, so that the wedge block 32241 can be engaged in the corresponding slot 32221, so that the second slider 3222 will not move along the second slide 321, and the bottom agitator 23 cannot drive the corresponding intermediate agitator 22 to rotate, thereby improving the bubble clamping effect; when the liquid level is high, the stiffness coefficient of the second compression spring 3225 located at the top is small, so that the corresponding slide 3224 is easier to retract into the spiral blade 25, so that the wedge block 32241 and the corresponding slot 32221 are easier to disengage, so that the second slider 3222 can move more easily along the second slide 321, so that the bottom agitator 23 can more easily drive the corresponding intermediate agitator 22 to rotate, thereby improving the stirring effect.

[0072] In other embodiments, the air supply mechanism 4 is configured to include an air supply portion and a plurality of groups of air supply holes 42. The air supply holes 42 are arranged on the spiral blades 25 and are arranged corresponding to the slide 3224. When the slide 3224 is in the first position, the slide 3224 is used to close the air supply holes 42; when the slide 3224 is in the second position, the air supply holes 42 are opened; the air supply portion is configured to be able to introduce sterile air into the plurality of groups of air supply holes 42.

[0073] Specifically in this embodiment, the air supply unit can be configured to include an air purification device and an air supply ring 41, and the air supply ring 41 is configured to be a shell-shaped structure, such as Figure 2 As shown, the air supply ring 41 is coaxially and relatively rotatably arranged on the top of the tank body 1 during installation, and the air outlet end of the air purification equipment is connected to the air supply ring 41; the number of each group of air supply holes 42 can be set to two, and the two air supply holes 42 in the same group are opened on the same spiral blade 25 and are arranged corresponding to the slide 3224.

[0074] To facilitate the connection between the air supply ring 41 and the air supply hole 42, a first air path is arranged inside the support rod 24, and a second air path is arranged on the spiral blade 25. One end of the first air path is connected to the air supply ring 41, and the other end is connected to the second air path. The second air path is connected to the two air supply holes 42 of the same group at the same time.

[0075] When in use, start the air purification device, which sterilizes and filters the air, and then passes the air through the air supply ring 41, the first air path, the second air path and the air supply hole 42 in sequence, and sends the air into the liquid, so that the yeast can ferment normally; and by setting the exhaust holes above the liquid surface in a closed state and the exhaust holes below the liquid surface in an open state, it is possible to reduce the waste of sterile air, avoid sterile air not being absorbed by the yeast or being absorbed by the yeast in small amounts, and avoid the sterile air being directly discharged from the exhaust pipe 13.

[0076] In other embodiments, in order to further improve the defoaming efficiency, the top agitator 21 and the bottom agitator 23 are arranged to rotate in opposite directions.

[0077] Specifically in this embodiment, the top agitator 21 can be set to rotate in a clockwise direction, and the bottom agitator 23 can be set to rotate in a counterclockwise direction. The rotational speeds of the top agitator 21 and the bottom agitator 23 can be equal or unequal, so that the intensity of the relative movement between the middle agitator 22 above the liquid surface driven synchronously by the top agitator 21 and the middle agitator 22 below the liquid surface driven synchronously by the bottom agitator 23 is greater, thereby, on the one hand, being able to increase the intensity of bubble clamping, and on the other hand, being able to meet at a higher frequency, thereby improving the bubble clamping efficiency.

[0078] Similarly, the top agitator 21 may be set to rotate in a counterclockwise direction, and the bottom agitator 23 may be set to rotate in a clockwise direction. The rotation speeds of the top agitator 21 and the bottom agitator 23 may be equal or different.

[0079] In other embodiments, the yeast production fermentation tank is configured to further include a driving mechanism 5 , which is configured to provide a driving force for the top agitator 21 and the bottom agitator 23 to rotate.

[0080] Specifically in this embodiment, the driving mechanism 5 is configured to include a first driving motor 51, a second driving motor 54, a transmission belt 53 and two pulleys 52. Figure 1 As shown, the first drive motor 51 is arranged on the top of the tank body 1 during installation, and the motor shaft of the first drive motor 51 is arranged upward along the axial direction of the tank body 1, and the support rod 24 of the top agitator 21 passes through the top of the tank body 1, one of the pulleys 52 is fixedly sleeved on the motor shaft of the first drive motor 51, and the other pulley 52 is fixedly sleeved on the support rod 24 of the top agitator 21, and the transmission belt 53 is transmission-sleeved between the two pulleys 52, so that the first drive motor 51 can drive the top agitator 21 to rotate.

[0081] like Figure 2 As shown, the second drive motor 54 is inserted into the discharge pipe 12 during installation, and the motor shaft of the second drive motor 54 is arranged upward along the axial direction of the tank body 1, and is coaxially and fixedly connected to the bottom of the support rod 24 of the bottom agitator 23.

[0082] More specifically, to avoid affecting the discharge, the second drive motor 54 is arranged at the bottom to be connected to the inner wall of the discharge pipe 12 through a plurality of circumferentially arranged fixing bars, and the fermented yeast can be discharged from the tank body 1 through the gaps between adjacent fixing bars.

[0083] In other embodiments, the yeast production fermentation tank is configured to further include a temperature control mechanism 6, and the temperature control mechanism 6 is configured to control the temperature inside the tank body 1 to a preset temperature.

[0084] Specifically in this embodiment, the temperature control mechanism 6 is configured to include a coolant inlet pipe 61, a temperature control chamber 62 and a coolant outlet pipe 63. Figure 2 As shown, the coolant inlet pipe 61 is fixed and connected on the bottom circumferential side wall of the tank body 1, the coolant outlet pipe 63 is fixed and connected on the top circumferential side wall of the tank body 1, and is arranged opposite to the coolant inlet pipe 61, and the temperature control cavity 62 is arranged in the circumferential side wall of the tank body 1, so that the circumferential side wall of the tank body 1 forms a hollow structure, and the temperature control cavity 62 is connected with the coolant inlet pipe 61 and the coolant outlet pipe 63 at the same time.

[0085] When in use, the temperature inside the tank body 1 can be controlled by passing the coolant through the coolant inlet pipe 61 into the temperature control chamber 62, and the coolant after absorbing heat is discharged from the coolant outlet.

[0086] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows:

[0087] Initially, the bottom cover 121 is closed on the discharge pipe 12; the first slider 3122 is respectively located between the top agitator 21 and the first intermediate agitator 22, between the first intermediate agitator 22 and the second intermediate agitator 22, between the second intermediate agitator 22 and the third intermediate agitator 22, and between the third intermediate agitator 22 and the bottom agitator 23; the second slider 3222 is respectively arranged corresponding to the three intermediate agitators 22 and the bottom agitator 23.

[0088] First, the raw materials and fermentation liquid are added into the tank body 1 through the feeding pipe 11; assuming that the liquid level is between the second intermediate agitator 22 and the third intermediate agitator 22 at this time, the top agitator 21, the first intermediate agitator 22 and the second intermediate agitator 22 are located above the liquid surface, and the third intermediate agitator 22 and the bottom agitator 23 are located below the liquid surface. The first sliders 3122 between the top agitator 21 and the first intermediate agitator 22 and between the first intermediate agitator 22 and the second intermediate agitator 22 remain in place, and the first slider 3122 between the second intermediate agitator 22 and the third intermediate agitator 22 moves upward along the first slide 311 to correspond to the second intermediate agitator 22 under the action of buoyancy, and the first slider 3122 between the third intermediate agitator 22 and the bottom agitator 23 moves upward along the first slide 311 to correspond to the third intermediate agitator 22 under the action of buoyancy, so that the connection between the corresponding first slider 3122 and the first slide 311 is disconnected.

[0089] At this time, the slide 3224 on the bottom agitator 23 is in a state of being retracted into the spiral blade 25 under the action of hydraulic pressure, so that the wedge block 32241 thereon is engaged with the disengagement slot 32221, thereby enabling the corresponding second slide block 3222 to move normally. Then, the second slide block 3222 corresponding to the bottom agitator 23 can move upward along the second slideway 321 to between the bottom agitator 23 and the third intermediate agitator 22 under the action of buoyancy. Since the slide 3224 on the third intermediate agitator 22 is located near the liquid surface , the hydraulic pressure is small, so that the slide 3224 on the third intermediate agitator 22 is still in the state of extending out from the inside of the spiral blade 25, so that the wedge block 32241 and the slot 32221 thereon continue to be engaged, and the second slide block 3222 corresponding to the third intermediate agitator 22 cannot move upward along the second slide 321 to between the third intermediate agitator 22 and the second intermediate agitator 22 under the action of buoyancy; the second slide blocks 3222 corresponding to the first intermediate agitator 22 and the second intermediate agitator 22 both remain in place.

[0090] Then start the first drive motor 51 and the second drive motor 54, and the first drive motor 51 and the second drive motor 54 respectively drive the top agitator 21 and the bottom agitator 23 to rotate in opposite directions, wherein the top agitator 21 synchronously drives the first intermediate agitator 22 and the second intermediate agitator 22 to rotate synchronously through the connection between the first slider 3122 and the first slide 311, and the bottom agitator 23 synchronously drives the third intermediate agitator 22 to rotate through the connection between the second slider 3222 and the second slide 321, so as to stir the raw materials and the fermentation liquid while breaking the foam on the liquid surface.

[0091] At the same time, the air purification device is started. After sterilizing and filtering the air, the air is sent into the liquid through the air supply ring 41, the first air path, the second air path and the air supply hole 42 in sequence, so that the yeast can ferment normally.

[0092] At the same time, the coolant is introduced into the temperature control chamber 62 through the coolant inlet pipe 61 to control the temperature inside the tank body 1, and the coolant after absorbing heat is discharged from the coolant outlet.

[0093] After the fermentation is completed, the bottom cover 121 is opened and the fermented yeast is taken out from the tank body 1 to facilitate the next step.

[0094] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0095] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A fermentation tank for yeast production, characterized in that: The yeast production fermentation tank comprises: The tank body is placed vertically; A stirring mechanism is inserted in the tank body, the stirring mechanism comprises a top stirrer, a bottom stirrer and a plurality of middle stirrers, each of which is capable of self-rotation, the top stirrer, the middle stirrer and the bottom stirrer are arranged in sequence from top to bottom along the axis direction of the tank body; A control mechanism is inserted inside the tank body, the control mechanism includes a plurality of first control components and a plurality of second control components, the first control components are configured to control the top agitator to synchronously drive the middle agitator above the liquid surface to rotate; the second control components are configured to control the bottom agitator to synchronously drive the middle agitator below the liquid surface to rotate; The top stirrer and the bottom stirrer rotate relative to each other to break the foam; An air supply mechanism is configured to be able to introduce sterile air into the interior of the tank body.

2. The fermentation tank for yeast production according to claim 1, characterized in that: The top agitator, the bottom agitator and the middle agitator each include a support rod and a plurality of spiral blades arranged on the support rod, and the plurality of spiral blades on the same support rod are arranged circumferentially; the support rods of the top agitator, the bottom agitator and the middle agitator can rotate relative to each other; the spiral blades of the top agitator, the bottom agitator and the middle agitator are arranged correspondingly and can together form a spiral blade.

3. The fermentation tank for yeast production according to claim 2, characterized in that: The first control component includes a first slide and multiple first control parts. The first slide is set to a spiral structure and is opened in parallel on the side wall surface of the spiral blade; the multiple first control parts and the top agitator, the bottom agitator, and the middle agitator are arranged one by one; the first control part includes a first stopper, a first slider and a first elastic member. The first stopper is fixedly set on the side wall surface of the spiral blade; the first slider is slidably set on the first slide and is located below the first stopper; the first elastic member is connected between the first stopper and the first slider, and under the action of the first elastic member, the first slider has a tendency to move away from the first stopper.

4. The fermentation tank for yeast production according to claim 2, characterized in that: The second control assembly includes a second slide and a plurality of second control parts, the second slide is set as a spiral structure and is parallelly opened on the side wall surface of the spiral blade; the plurality of second control parts and the top agitator, the bottom agitator, and the middle agitator are arranged one by one; the second control part includes a second stopper, a second slider, a second elastic member, and a slide, the second stopper is fixedly arranged on the side wall surface of the spiral blade; the second slider is slidably arranged on the second slide and is located above the second stopper; the second elastic member is connected between the second stopper and the second slider, and under the action of the second elastic member, the second slider has a tendency to move in a direction close to the second stopper; The slide is inserted into the spiral blades and can slide elastically along the axial direction perpendicular to the tank body, and has corresponding first and second positions before and after sliding. When the slide is above the liquid surface, the slide is located at the first position and is engaged with the second slider to limit the position of the second slider; when the slide is below the liquid surface, the slide is located at the second position and is disengaged from the second slider.

5. The fermentation tank for yeast production according to claim 4, characterized in that: The second control part further includes a third elastic member, wherein the third elastic member is connected between the spiral blade and the slide, and under the action of the third elastic member, the slide has a tendency to extend out of the spiral blade.

6. The fermentation tank for yeast production according to claim 5, characterized in that: The stiffness coefficient of the third elastic member decreases from bottom to top along the axial direction of the tank body.

7. The fermentation tank for yeast production according to claim 4, characterized in that: The air supply mechanism includes an air supply part and multiple groups of air supply holes. The air supply holes are arranged on the spiral blades and corresponding to the slide. When the slide is in the first position, the slide is used to close the air supply holes; when the slide is in the second position, the air supply holes are opened; the air supply part is configured to be able to introduce sterile air into the multiple groups of air supply holes.

8. The fermentation tank for yeast production according to claim 1, characterized in that: The top agitator and the bottom agitator rotate in opposite directions.

9. The fermentation tank for yeast production according to claim 1, characterized in that: The fermentation tank for yeast production further includes a driving mechanism configured to provide a driving force for the top agitator and the bottom agitator to rotate.

10. The fermentation tank for yeast production according to claim 1, characterized in that: The yeast production fermentation tank further includes a temperature control mechanism, which is configured to control the temperature inside the tank body to a preset temperature.

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