Intelligent probiotic culture tank for bread fermentation

Abstract

The invention relates to the technical field of culture tanks, and provides an intelligent probiotic culture tank for bread fermentation, which comprises a tank body, the top of the tank body is fixedly connected with a fixing sleeve, the inner side of the fixing sleeve is rotatably connected with a central shaft, the bottom of the tank body is provided with a stirring mechanism, and the fixing sleeve is provided with a driving mechanism. The driving mechanism comprises a motor fixedly installed at the top of the fixing sleeve, an output shaft of the motor is fixedly connected with a driving shaft, the bottom of the driving shaft is fixedly connected with a telescopic shaft, and the top end of the telescopic shaft is provided with a jacking part; one end of the top of the tank body is fixedly connected with an exhaust pipe; the outlet end of the exhaust pipe is fixedly connected with a communicating pipe; a negative pressure mechanism is arranged at the outlet end of the communicating pipe. The stirring mechanism provided by the invention realizes multi-dimensional stirring in horizontal and vertical directions under the driving of rotation and up-down reciprocating motion of the central shaft, so that nutritional ingredients in a culture solution are ensured to be fully mixed, and sediment accumulation is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of culture tank, in particular, it relates to a kind of bread fermentation probiotic intelligent culture tank. BACKGROUND

[0002] In the technical field of culture tank, especially for the culture of bread fermentation probiotic (such as lactic acid bacteria), there are significant deficiencies in the prior art, and innovative solutions are urgently needed;The bread fermentation process depends on the active propagation of probiotics, and these strains are mostly anaerobic microorganisms (such as lactic acid bacteria), which need to grow in a strict anaerobic environment to ensure fermentation efficiency.

[0003] However, the traditional culture tank has systematic defects in structure design, stirring efficiency, oxygen control and intelligent monitoring, resulting in unsatisfactory fermentation effect, unstable product quality, and even causing problems such as strain activity decline, including the following technical defects: First, the traditional culture tank usually uses fixed stirring paddle, and its stirring range is limited to horizontal or vertical single direction, which cannot realize multi-dimensional mixing, which leads to uneven distribution of nutrient components (such as sugar, nitrogen source) in the culture solution, limited growth of bacterial population, and difficulty in stirring the precipitate at the bottom of the culture solution, and the upper air bubbles cannot be effectively broken; Second, the oxygen bubbles in the culture solution are not removed in time, which will dissolve back into the liquid and destroy the anaerobic condition. The existing equipment lacks dynamic piercing ability, and the bubble breaking rate is low, which leads to slow propagation of probiotics and prolongs the fermentation period. Third, since lactic acid bacteria are highly sensitive to oxygen, the existing technology mainly relies on natural diffusion or simple air extraction device, and the negative pressure generation needs an additional power source (such as independent vacuum pump), which increases energy consumption and cost. Moreover, the existing technology uses direct discharge or fixed nitrogen injection, which cannot recycle nitrogen, leading to resource waste and risk of culture solution leakage or contamination caused by pressure fluctuation.

[0004] Therefore, the present application provides a bread fermentation probiotic intelligent culture tank. SUMMARY

[0005] The present application provides a bread fermentation probiotic intelligent culture tank, which solves the problem of uneven distribution of nutrient components in the culture solution in the prior art.

[0006] The technical scheme of the present application is as follows: a bread fermentation probiotic intelligent culture tank, comprising a tank body, a fixed sleeve is fixedly connected to the top of the tank body, a central shaft is rotatably connected to the inner side of the fixed sleeve, the central shaft penetrates through the bottom wall of the fixed sleeve and extends to the inner side of the tank body, a stirring mechanism for stirring the culture solution by cooperating with the rotation of the central shaft is arranged at the bottom of the tank body, a driving mechanism is arranged on the fixed sleeve, the driving mechanism comprises a motor fixedly installed at the top of the fixed sleeve, a driving shaft is fixedly connected to the output shaft of the motor, a telescopic shaft is fixedly connected to the bottom of the driving shaft, the bottom end of the telescopic shaft is slidably connected to the top end of the central shaft, a top pressing piece is arranged at the top end of the telescopic shaft for driving the central shaft to reciprocate up and down by cooperating with the rotation of the telescopic shaft, an exhaust pipe is fixedly connected to one end of the top of the tank body, the outlet end of the exhaust pipe is fixedly connected to a communication pipe, and a negative pressure mechanism is arranged at the outlet end of the communication pipe for discharging the air in the tank body by cooperating with the rotation of the driving shaft.

[0007] Preferably, the stirring mechanism comprises a plurality of stirring paddles fixedly connected to the outer side of the central shaft, the plurality of stirring paddles are equally distributed along the vertical direction, the bottom of the central shaft is fixedly connected with a mounting ring, one end of the mounting ring is fixedly connected with a connecting rod, and the upper and lower ends of the connecting rod are both fixedly connected with a plurality of piercing rods equally distributed along the length direction of the connecting rod.

[0008] Preferably, the telescopic shaft comprises a plug-in part, the top end of the inner side of the central shaft is provided with a plug-in groove slidably connected with the plug-in part, and the outer side of the plug-in part is fixedly connected with a limiting strip slidably connected with the inner wall of the plug-in groove.

[0009] Preferably, a limiting groove is formed in the inner side of the plug-in groove along the vertical direction, and the limiting strip is gap-connected with the limiting groove.

[0010] Preferably, the top pressing piece comprises a rotating plate fixedly connected to the top end of the telescopic shaft, a top rod is fixedly connected to the outer edge of the bottom of the rotating plate, the top of the central shaft is fixedly connected with a ring plate, a plurality of arc-shaped protrusions are fixedly connected to the outer edge of the top of the ring plate and equally distributed around the ring plate, the top rod intermittently contacts with any one of the arc-shaped protrusions by cooperating with the rotation of the rotating plate, a return spring is sleeved on the outer side of the central shaft, the top end of the return spring contacts with the ring plate, and the bottom end of the return spring contacts with the bottom wall of the fixed sleeve.

[0011] Preferably, the negative pressure mechanism comprises a wind tube fixedly connected to the outer side of the fixed sleeve, a rotating shaft penetrating through the side wall of the fixed sleeve is rotatably connected to the inner side of the wind tube, a suction impeller is fixedly connected to one end of the rotating shaft, the air inlet of the wind tube is connected with the communication pipe, and a transmission piece is arranged at the other end of the rotating shaft for driving the rotating shaft to rotate by cooperating with the rotation of the driving shaft.

[0012] Preferably, the transmission member comprises a first bevel gear fixedly connected to the driving shaft, and an end of the rotating shaft is fixedly connected with a second bevel gear meshing with the first bevel gear.

[0013] Preferably, the air outlet of the air cylinder is fixedly connected with a three-way pipe, one end of the three-way pipe is fixedly connected with an air outlet pipe, the air outlet pipe is fixedly connected with a first electromagnetic valve, the other end of the three-way pipe is fixedly connected with a backflow pipe, the backflow pipe is fixedly connected with a second electromagnetic valve, the outlet end of the backflow pipe is fixedly connected with a nitrogen tank, the outlet end of the nitrogen tank is fixedly connected with an air inlet pipe, and the outlet end of the air inlet pipe is communicated with the inside of the tank body.

[0014] Preferably, one end of the top of the tank body is fixedly connected with a temperature sensor, and the other end of the top of the tank body is fixedly connected with an oxygen concentration sensor.

[0015] Preferably, the outside of the tank body is fixedly connected with a control box, the control box is provided with a control panel, the control panel comprises a processor, the oxygen concentration sensor and the temperature sensor are signal-connected with the processor, the first electromagnetic valve and the second electromagnetic valve are signal-connected with the processor, and the output end of the processor is electrically connected with a temperature early warning device.

[0016] The working principle and beneficial effects of the present application are as follows: 1. The stirring mechanism is driven to rotate and reciprocate up and down on the central shaft, realizing multidimensional stirring in horizontal and vertical directions, which ensures that the nutrient components (such as sugar and nitrogen source) in the culture solution are fully mixed, and the accumulation of precipitates is avoided. When the motor drives the driving shaft to rotate, the rotating plate at the top end of the telescopic shaft pushes the top rod to intermittently abut against the arc-shaped protrusion, and the central shaft slides up and down in cooperation with the return spring. This dynamic stirring range is expanded, the bubble piercing rod can pierce bubbles in multiple directions, the risk of oxygen dissolution is reduced, a stable anaerobic environment is created for lactic acid bacteria, and the reproduction efficiency is improved.

[0017] 2. The transmission member (the first bevel gear and the second bevel gear) drives the rotating shaft and the air suction impeller to rotate at high speed, generates negative pressure, and discharges the air in the tank through the exhaust pipe. This does not require an independent power source, and the energy consumption is greatly reduced. The nitrogen circulation mechanism realizes intelligent switching through the design of the three-way pipe, the electromagnetic valve and the backflow pipe. When the oxygen concentration sensor detects high concentration, the processor controls the first electromagnetic valve to open to discharge air. When the concentration is low, the second electromagnetic valve is opened to recycle the nitrogen into the nitrogen tank through the backflow pipe. This avoids the waste of directly discharging nitrogen, improves the resource utilization rate, maintains the pressure balance in the tank, and prevents the culture solution from leaking or being contaminated.

[0018] 3, the temperature sensor and oxygen concentration sensor collect data in the tank in real time, and automatically control the electromagnetic valve switch and motor operation through the processor (in the control box); when the temperature exceeds the threshold value, the processor triggers the temperature early warning alarm; when the oxygen concentration is abnormal, the nitrogen circulation mode is automatically switched, the fermentation process is realized unattended, human errors are reduced, and the standardization of bread fermentation and food safety are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0020] Figure 1 Structure diagram of the intelligent culture tank for bread fermentation with probiotics according to the application Figure 1 ; Figure 2 Structure diagram of the intelligent culture tank for bread fermentation with probiotics according to the application Figure 2 ; Figure 3 Structure diagram of the driving mechanism according to the application; Figure 4 Structure diagram of the driving mechanism according to the application; Figure 5 Structure diagram of the telescopic shaft according to the application; Figure 6 Structure diagram of the top pressing piece according to the application; Figure 7 Structure diagram of the negative pressure mechanism according to the application; Figure 8 Structure diagram of the transmission piece according to the application; Figure 9 System block diagram of the application.

[0021] In the figure: 1, tank body; 2, fixed sleeve; 3, central shaft; 4, stirring mechanism; 41, stirring paddle; 42, mounting ring; 43, connecting rod; 44, bubble piercing rod; 5, driving mechanism; 51, motor; 52, driving shaft; 53, telescopic shaft; 531, plug-in part; 532, plug-in slot; 533, limiting strip; 534, limiting slot; 54, top pressing piece; 541, rotating plate; 542, top rod; 543, ring plate; 544, arc-shaped protrusion; 545, return spring; 6, exhaust pipe; 7, communication pipe; 8, negative pressure mechanism; 81, air cylinder; 82, rotating shaft; 83, air suction impeller; 84, three-way pipe; 85, air outlet pipe; 86, first electromagnetic valve; 87, second electromagnetic valve; 88, transmission piece; 881, first bevel gear; 882, second bevel gear; 9, air inlet pipe; 10, nitrogen tank; 11, backflow pipe; 12, temperature sensor; 13, oxygen concentration sensor; 14, control box. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of the present application.

[0023] As shown in Figures 1-9 The present embodiment proposes a probiotic intelligent culture tank for bread fermentation, which comprises a tank body 1, a fixed sleeve 2 fixedly connected to the top of the tank body 1, a central shaft 3 rotatably connected to the inner side of the fixed sleeve 2, the central shaft 3 penetrating through the bottom wall of the fixed sleeve 2 and extending to the inner side of the tank body 1, a stirring mechanism 4 provided at the bottom of the tank body 1 and configured to stir the culture solution by cooperating with the rotation of the central shaft 3, a driving mechanism 5 provided on the fixed sleeve 2, the driving mechanism 5 comprising a motor 51 fixedly installed at the top of the fixed sleeve 2, a driving shaft 52 fixedly connected to the output shaft of the motor 51, a telescopic shaft 53 fixedly connected to the bottom of the driving shaft 52, the bottom end of the telescopic shaft 53 being slidably fitted with the top end of the central shaft 3, a top pressing piece 54 provided at the top end of the telescopic shaft 53 and configured to drive the central shaft 3 to reciprocate up and down by cooperating with the rotation of the telescopic shaft 53, one end of the top of the tank body 1 being fixedly connected to an exhaust pipe 6, the outlet end of the exhaust pipe 6 being fixedly connected to a communication pipe 7, the outlet end of the communication pipe 7 being provided with a negative pressure mechanism 8 configured to discharge the air inside the tank body 1 by cooperating with the rotation of the driving shaft 52.

[0024] During the culture process of lactic acid bacteria, the motor 51 is started to drive the driving shaft 52 to rotate, so that the driving shaft 52 stirs the culture solution inside the tank body 1, which not only fully mixes the nutrients, but also facilitates the discharge of oxygen mixed in the culture solution, and at the same time, the negative pressure mechanism 8 discharges the air inside the tank body 1, which makes the inside of the tank body 1 in an anaerobic state, which is conducive to the propagation of lactic acid bacteria, thereby greatly improving the culture effect of lactic acid bacteria.

[0025] Further, the stirring mechanism 4 comprises a plurality of stirring paddles 41 fixedly connected to the outer side of the central shaft 3, the plurality of stirring paddles 41 being equidistantly distributed along the vertical direction, the bottom of the central shaft 3 being fixedly connected to a mounting ring 42, one end of the mounting ring 42 being fixedly connected to a connecting rod 43, the upper and lower ends of the connecting rod 43 being fixedly connected to a plurality of bubble piercing rods 44 equidistantly distributed along the length direction of the connecting rod 43.

[0026] The driving shaft 52 is driven to rotate by starting the motor 51, so that the driving shaft 52 drives the central shaft 3 to rotate synchronously, so that all the stirring paddles 41 rotate circumferentially, so that the stirring paddles 41 stir the culture solution in the tank body 1, and at the same time, the top pressing piece 54 drives the central shaft 3 to reciprocate up and down, so that the stirring paddles 41 move up and down in the vertical direction, greatly improving the stirring range of the stirring paddles 41, thereby greatly improving the stirring effect, which is beneficial to the full mixing of various nutrients in the culture solution; at the same time, the connecting rod 43 drives all the bubble piercing rods 44 to rotate circumferentially and reciprocate up and down, so that the bubble piercing rods 44 can dynamically pierce the bubbles in the culture solution in multiple directions and make oxygen escape, so that the culture solution is in an anaerobic state, thereby facilitating the rapid reproduction of lactic acid bacteria.

[0027] Further, the telescopic shaft 53 comprises a plug-in part 531, the inside of the central shaft 3 is provided with a plug-in groove 532 which is in sliding fit with the plug-in part 531, the outside of the plug-in part 531 is fixedly connected with a limiting strip 533, the limiting strip 533 is in sliding connection with the inner wall of the plug-in groove 532, the inside of the plug-in groove 532 is provided with a limiting groove 534 in the vertical direction, and the limiting strip 533 is in clearance fit with the limiting groove 534.

[0028] The sliding fit of the plug-in part 531 and the central shaft 3 can ensure that the central shaft 3 can move vertically, and the design of the limiting strip 533 can limit the relative rotation between the central shaft 3 and the central shaft 3, so that the central shaft 3 always rotates synchronously with the telescopic shaft 53 during the up-and-down movement, thereby ensuring stable transmission of power.

[0029] Further, the top pressing piece 54 comprises a rotating plate 541 fixedly connected to the top end of the telescopic shaft 53, a top rod 542 fixedly connected to the outer edge of the bottom of the rotating plate 541, a ring plate 543 fixedly connected to the top of the central shaft 3, a plurality of arc-shaped protrusions 544 distributed at equal angles around the ring plate 543 fixedly connected to the outer edge of the top of the ring plate 543, the top rod 542 intermittently contacts any one of the arc-shaped protrusions 544 by cooperating with the rotation of the rotating plate 541, a reset spring 545 is sleeved outside the central shaft 3, the top end of the reset spring 545 contacts the ring plate 543, and the bottom end of the reset spring 545 contacts the bottom wall of the fixed sleeve 2.

[0030] When the top rod 542 is in contact with one of the arc-shaped protrusions 544, the arc-shaped protrusion 544 receives downward pressure, so that the arc-shaped protrusion 544 drives the ring plate 543 to move downward, at this time, the return spring 545 is compressed to accumulate potential energy; when the top rod 542 is separated from the arc-shaped protrusion 544, at this time, the return spring 545 releases the potential energy and drives the ring plate 543 to move upward, and the cycle is repeated, so that the ring plate 543 can drive the central shaft 3 to reciprocate up and down, and cooperate with the rotation of the central shaft 3, so that the stirring paddle 41 moves up and down in the vertical direction, greatly improving the stirring range of the stirring paddle 41, thereby greatly improving the stirring effect; meanwhile, the connecting rod 43 drives all the bubble piercing rods 44 to rotate circumferentially and move up and down, so that the bubble piercing rods 44 can dynamically pierce the bubbles in the culture solution in multiple directions and make oxygen escape, so that the culture solution is in an anaerobic state, thereby facilitating the rapid reproduction of lactic acid bacteria.

[0031] Further, the negative pressure mechanism 8 comprises a wind cylinder 81 fixedly connected to the outside of the fixed sleeve 2, the inside of the wind cylinder 81 is rotatably connected with a rotating shaft 82 penetrating through the side wall of the fixed sleeve 2, one end of the rotating shaft 82 is fixedly connected with a suction impeller 83, the air inlet of the wind cylinder 81 is communicated with the communicating pipe 7, the other end of the rotating shaft 82 is provided with a transmission member 88 driven by the rotation of the driving shaft 52 to drive the rotating shaft 82 to rotate, the transmission member 88 comprises a first bevel gear 881 fixedly connected to the driving shaft 52, the end of the rotating shaft 82 is fixedly connected with a second bevel gear 882 engaged with the first bevel gear 881.

[0032] By starting the motor 51 to drive the driving shaft 52 to rotate, the first bevel gear 881 is driven to rotate synchronously, so that the second bevel gear 882 drives the rotating shaft 82 to rotate, which drives the suction impeller 83 to rotate at high speed, so that the air inlet of the wind cylinder 81 is in a negative pressure state, which drives the communicating pipe 7 to suck the air in the tank body 1 through the exhaust pipe 6, so that the tank body 1 is in an anaerobic state, avoiding oxygen re-dissolving in the culture solution, which is beneficial to the reproduction of lactic acid bacteria, thereby greatly improving the culture effect of lactic acid bacteria.

[0033] Further, the air outlet of the wind cylinder 81 is fixedly connected with a three-way pipe 84, one end of the three-way pipe 84 is fixedly connected with an air outlet pipe 85, the air outlet pipe 85 is fixedly connected with a first electromagnetic valve 86, the other end of the three-way pipe 84 is fixedly connected with a backflow pipe 11, the backflow pipe 11 is fixedly connected with a second electromagnetic valve 87, the outlet end of the backflow pipe 11 is fixedly connected with the nitrogen tank 10, the outlet end of the nitrogen tank 10 is fixedly connected with the air inlet pipe 9, and the outlet end of the air inlet pipe 9 is communicated with the inside of the tank body 1.

[0034] The air outlet pipe 85 is connected with the air outlet of the air cylinder 81 by opening the first electromagnetic valve 86 and closing the second electromagnetic valve 87, so that the air in the tank body 1 is discharged; the nitrogen in the nitrogen tank 10 is introduced into the tank body 1 through the air inlet pipe 9 to balance the pressure; the discharged nitrogen is introduced into the nitrogen tank 10 through the reflux pipe 11 by opening the second electromagnetic valve 87 and closing the first electromagnetic valve 86, so as to be recycled, which not only balances the pressure in the tank body 1, but also greatly reduces the waste of directly discharging nitrogen.

[0035] Further, one end of the top of the tank body 1 is fixedly connected with a temperature sensor 12, the other end of the top of the tank body 1 is fixedly connected with an oxygen concentration sensor 13, the outside of the tank body 1 is fixedly connected with a control box 14, and the control box 14 is provided with a control panel, the control panel comprising a processor, the oxygen concentration sensor 13 and the temperature sensor 12 are signal connected with the processor, and the first electromagnetic valve 86 and the second electromagnetic valve 87 are signal connected with the processor, and the output end of the processor is electrically connected with a temperature warning device.

[0036] Working principle: the temperature sensor 12 can detect the temperature in the tank body 1 in real time and send a signal to the processor, when the temperature exceeds the safety threshold, the processor controls the temperature warning device to start and issue a warning, reminding the staff to handle it in time; The oxygen concentration sensor 13 can detect the oxygen concentration in the tank body 1 in real time, when the oxygen concentration in the tank body 1 is large, the processor controls the first electromagnetic valve 86 to open and the second electromagnetic valve 87 to close, so that the air outlet pipe 85 is connected with the air outlet of the air cylinder 81, the motor 51 is started to drive the driving shaft 52 to rotate, the driving shaft 52 drives the central shaft 3 to rotate synchronously, all the stirring paddles 41 rotate circumferentially, the stirring paddles 41 stir the culture solution in the tank body 1, the telescopic shaft 53 drives the rotating plate 541 to rotate synchronously, the top rod 542 at the bottom of the rotating plate 541 rotates circumferentially, when the top rod 542 abuts against one of the arc-shaped lugs 544, the arc-shaped lug 544 receives downward pressure, the arc-shaped lug 544 drives the ring plate 543 to move downward, at this time the return spring 545 is compressed and accumulates potential energy, when the top rod 542 is separated from the arc-shaped lug 544, the return spring 545 releases the potential energy and drives the ring plate 543 to move upward, so as to realize the up-down reciprocating movement of the central shaft 3, and the stirring paddles 41 move up and down in the vertical direction, so as to greatly improve the stirring range and the stirring effect of the stirring paddles 41; meanwhile, the connecting rod 43 drives all the piercing rods 44 to rotate circumferentially and move up and down, so that the piercing rods 44 can dynamically pierce the bubbles in the culture solution from multiple directions and make the oxygen escape, so as to make the culture solution in an anaerobic state, which is beneficial to the rapid reproduction of lactic acid bacteria. The rotation of the drive shaft 52 synchronously drives the first bevel gear 881, and the second bevel gear 882 drives the rotating shaft 82 to rotate, so that the air suction impeller 83 rotates at a high speed, the air inlet of the air cylinder 81 is in a negative pressure state, the communicating pipe 7 sucks the air in the tank body 1 out through the exhaust pipe 6, meanwhile, the nitrogen gas in the nitrogen tank 10 is introduced into the tank body 1 through the air inlet pipe 9 to balance the pressure, so that the tank body 1 is in an oxygen-free state, the oxygen is prevented from being dissolved in the culture solution again, the reproduction of the lactic acid bacteria is facilitated, and the culture effect of the lactic acid bacteria is further improved; When the oxygen concentration in the tank body 1 is small, the second electromagnetic valve 87 is controlled to be opened and the first electromagnetic valve 86 is controlled to be closed by the processor, so that the backflow pipe 11 introduces the discharged nitrogen gas into the nitrogen tank 10 for recycling, which not only balances the pressure in the tank body 1, but also reduces the waste of directly discharging the nitrogen gas to the maximum extent.

[0037] The above are only the preferred embodiments of the present application, and are not used to limit the present application, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A smart probiotic culture tank for bread fermentation, comprising a tank body (1), wherein a fixing sleeve (2) is fixedly connected to the top of the tank body (1), and a central shaft (3) is rotatably connected to the inner side of the fixing sleeve (2), the central shaft (3) penetrating the bottom wall of the fixing sleeve (2) and extending to the inner side of the tank body (1), characterized in that, The bottom of the tank body (1) is provided with a stirring mechanism (4) for stirring the culture solution by matching the rotation of the central shaft (3), the fixed sleeve (2) is provided with a driving mechanism (5), the driving mechanism (5) comprises a motor (51) fixedly installed on the top of the fixed sleeve (2), the output shaft of the motor (51) is fixedly connected with a driving shaft (52), the bottom of the driving shaft (52) is fixedly connected with a telescopic shaft (53), the bottom end of the telescopic shaft (53) is in sliding fit with the top end of the central shaft (3), the top end of the telescopic shaft (53) is provided with a top pressing piece (54) for driving the central shaft (3) to reciprocate up and down by matching the rotation of the telescopic shaft (53), one end of the top of the tank body (1) is fixedly connected with an exhaust pipe (6), the outlet end of the exhaust pipe (6) is fixedly connected with a communication pipe (7), the outlet end of the communication pipe (7) is provided with a negative pressure mechanism (8) for discharging the air in the tank body (1) by matching the rotation of the driving shaft (52).

2. The probiotic intelligent cultivation tank for bread fermentation according to claim 1, characterized in that, The stirring mechanism (4) comprises a plurality of stirring paddles (41) fixedly connected to the outside of the central shaft (3), a plurality of the stirring paddles (41) are equidistantly distributed along the vertical direction, the bottom of the central shaft (3) is fixedly connected with a mounting ring (42), one end of the mounting ring (42) is fixedly connected with a connecting rod (43), the upper and lower ends of the connecting rod (43) are both fixedly connected with a plurality of piercing bubble rods (44) equidistantly distributed along the length direction of the connecting rod (43).

3. The probiotic intelligent cultivation tank for bread fermentation according to claim 1, characterized in that, The telescopic shaft (53) comprises a plug-in part (531), the inside of the top end of the central shaft (3) is provided with a plug-in groove (532) in sliding fit with the plug-in part (531), the outside of the plug-in part (531) is fixedly connected with a limiting strip (533), the limiting strip (533) is in sliding connection with the inner wall of the plug-in groove (532).

4. The probiotic intelligent cultivation tank for bread fermentation according to claim 3, characterized in that, The inside of the plug-in groove (532) is provided with a limiting groove (534) along the vertical direction, the limiting strip (533) is in clearance fit with the limiting groove (534).

5. The probiotic intelligent cultivation tank for bread fermentation according to claim 1, characterized in that, The top pressing piece (54) comprises a rotating plate (541) fixedly connected to the top end of the telescopic shaft (53), the outer edge of the bottom of the rotating plate (541) is fixedly connected with a top rod (542), the top of the central shaft (3) is fixedly connected with a ring plate (543), the top of the ring plate (543) is fixedly connected with a plurality of arc-shaped protrusions (544) equiangularly distributed around the ring plate (543), the top rod (542) intermittently interferes with any one arc-shaped protrusion (544) by matching the rotation of the rotating plate (541), the outside of the central shaft (3) is sleeved with a reset spring (545), the top end of the reset spring (545) interferes with the ring plate (543), and the bottom end of the reset spring (545) interferes with the bottom wall of the fixed sleeve (2).

6. The probiotic intelligent cultivation tank for bread fermentation according to claim 1, characterized in that, The negative pressure mechanism (8) comprises a wind drum (81) fixedly connected to the outside of the fixed sleeve (2), the inside of the wind drum (81) is rotatably connected with a rotating shaft (82) penetrating the side wall of the fixed sleeve (2), one end of the rotating shaft (82) is fixedly connected with a suction impeller (83), the air inlet of the wind drum (81) is communicated with the communicating pipe (7), the other end of the rotating shaft (82) is provided with a transmission member (88) driven to rotate by the rotation of the driving shaft (52).

7. The probiotic intelligent cultivation tank for bread fermentation according to claim 6, characterized in that, The transmission member (88) comprises a first bevel gear (881) fixedly connected to the driving shaft (52), and the end of the rotating shaft (82) is fixedly connected with a second bevel gear (882) engaged with the first bevel gear (881).

8. The probiotic intelligent cultivation tank for bread fermentation according to claim 6, characterized in that, The air outlet of the wind drum (81) is fixedly connected with a three-way pipe (84), one end of the three-way pipe (84) is fixedly connected with an air outlet pipe (85), the air outlet pipe (85) is fixedly connected with a first electromagnetic valve (86), the other end of the three-way pipe (84) is fixedly connected with a backflow pipe (11), the backflow pipe (11) is fixedly connected with a second electromagnetic valve (87), the outlet end of the backflow pipe (11) is fixedly connected with a nitrogen tank (10), the outlet end of the nitrogen tank (10) is fixedly connected with an air inlet pipe (9), and the outlet end of the air inlet pipe (9) is communicated with the inside of the tank body (1).

9. The probiotic intelligent cultivation tank for bread fermentation according to claim 8, characterized in that, One end of the top of the tank body (1) is fixedly connected with a temperature sensor (12), and the other end of the top of the tank body (1) is fixedly connected with an oxygen concentration sensor (13).

10. The probiotic intelligent cultivation tank for bread fermentation according to claim 9, characterized in that, The outside of the tank body (1) is fixedly connected with a control box (14), the control box (14) is provided with a control panel, the control panel comprises a processor, the oxygen concentration sensor (13) and the temperature sensor (12) are signal connected with the processor, the first electromagnetic valve (86) and the second electromagnetic valve (87) are signal connected with the processor, and the output end of the processor is electrically connected with a temperature warning device.

Images