Lactic acid bacteria dairy product fermentation culture equipment with lactose decomposition function

Abstract

The invention discloses lactic acid bacteria dairy product fermentation culture equipment with a lactose decomposition function, and relates to the technical field of fermentation stirring, the lactic acid bacteria dairy product fermentation culture equipment comprises a fermentation tank, a feeding pipe, a discharging pipe, a stirring mechanism, a driving mechanism and a synchronizing mechanism, the feeding pipe and the discharging pipe are respectively connected to the bottom of the fermentation tank, and the upper part of the fermentation tank is provided with a squint window; the driving mechanism and the synchronizing mechanism are arranged above the fermentation tank through the mounting support, the driving mechanism comprises a sealing shaft and a stirring arm, the sealing shaft penetrates through the top of the fermentation tank, the stirring arm is connected with the sealing shaft and located in the fermentation tank, the stirring mechanism is arranged on the stirring arm, and the synchronizing mechanism is arranged on the stirring arm. The synchronous mechanism is located above the driving mechanism, rotation of the cylindrical cam and rotation of the stirring arm keep a proper synchronous rate, the spiral stirring rod has three stirring states at the same time, and through superposition of the three stirring states, the stirring coverage range of the spiral stirring rod is large, stirring uniformity is better, and heating uniformity is better.

Description

Technical Field

[0001] The invention relates to the technical field of fermentation and stirring, in particular to a lactic acid bacteria dairy product fermentation and cultivation device with the function of decomposing lactose. Background Art

[0002] People with lactose intolerance find it difficult to break down lactose due to the lack of β-galactosidase in their intestines. However, lactic acid bacteria fermented dairy products can alleviate this problem by metabolizing lactose to produce functional products, such as lactic acid or galactose. Traditional fermentation equipment usually uses static fermentation tanks and relies on one-way stirring devices, namely fixed stirring rods and electric heating wires, but its stirring and heating methods have significant defects.

[0003] First, the stirring effect produced by the traditional stirring method is not uniform. The single stirring direction leads to material stratification, unbalanced dissolved oxygen distribution, restricted lactic acid bacteria growth, low lactose decomposition efficiency, and easy sedimentation and agglomeration of fermentation products, affecting the uniformity of the final product; secondly, the temperature control accuracy is insufficient, the heating wire or water bath heating response is delayed, and the temperature fluctuation in the tank is more than ±3°C. Local overheating (>45°C) can easily damage the activity of the bacterial flora, while the low temperature area (<35°C) causes the metabolic rate to drop sharply, and the lactose conversion rate is less than 60%; in order to compensate for the metabolic defects of the bacteria, additional lactose or glucose needs to be added to maintain the fermentation process, which not only increases costs but also introduces impurities, which is not in line with the trend of low-additive healthy food. Therefore, it is urgent to develop a fermentation equipment that integrates efficient mixing and precise temperature control to achieve efficient decomposition and stable fermentation of lactose, while reducing energy consumption and production costs. Summary of the Invention

[0004] The object of the present invention is to provide a lactic acid bacteria dairy product fermentation and cultivation device with the function of decomposing lactose, so as to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a lactic acid bacteria dairy product fermentation and cultivation device with the function of decomposing lactose, comprising a fermentation tank, a feed pipe, a discharge pipe, a stirring mechanism, a driving mechanism and a synchronization mechanism, wherein the feed pipe and the discharge pipe are respectively connected to the bottom of the fermentation tank, and a peep window is provided on the upper part of the fermentation tank. The driving mechanism and the synchronization mechanism are arranged above the fermentation tank through an installation bracket, and the driving mechanism comprises a sealing shaft and a stirring arm, wherein the sealing shaft passes through the top of the fermentation tank, the stirring arm is connected to the sealing shaft, the stirring arm is located inside the fermentation tank, the stirring mechanism is arranged on the stirring arm, and the synchronization mechanism is located above the driving mechanism.

[0006] Furthermore, solenoid valves are provided in the feed pipe and the discharge pipe, an electric heating wire is provided in the inner wall of the fermentation tank, a sealing rubber ring is provided at the contact position between the sealing shaft and the top of the fermentation tank, the sealing shaft and the fermentation tank are sealed and slidably connected, dairy products and fermentation bacteria enter the fermentation tank through the feed pipe, and the dairy products are heated by the electric heating wire on the inner wall of the fermentation tank and the electric heating wire in the spiral stirring rod. The driving mechanism, stirring mechanism and synchronization mechanism cooperate to stir the dairy products. After the processing and fermentation are completed, the finished product is discharged through the discharge pipe.

[0007] Furthermore, the stirring arm is arc-shaped, and the contour of the stirring arm is the same as the internal contour of the fermentation tank. A hollow slide groove is provided on the stirring arm, and side positioning grooves are provided on both sides of the hollow slide groove. The stirring mechanism includes a slider and four sliding pins. The four sliding pins are symmetrically installed in pairs on both sides of the slider. The slider is located in the hollow slide groove, and the four sliding pins are respectively installed in a pair of side positioning grooves. The second motor is energized to drive the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel drives the spline shaft to rotate through the inner spline groove. The sealing shaft rotates synchronously with the stirring arm, and the stirring arm drives the stirring mechanism to rotate in the fermentation tank.

[0008] Furthermore, the stirring mechanism includes a first motor, a mounting plate and several spiral stirring rods. The first motor is inverted and installed in the slider. The first motor is connected to the control system circuit through the circuit. The mounting plate is connected to the motor shaft of the first motor. Several spiral stirring rods are evenly distributed in a ring shape on the mounting plate. The spiral diameter of each spiral stirring rod increases linearly. An electric heating wire is provided in the middle of each spiral stirring rod. The first motor drives the mounting plate to rotate, and the mounting plate drives the spiral stirring rod to rotate. The spiral stirring rod stirs the dairy product, and the electric heating wire heats the dairy product.

[0009] Furthermore, an intracavity circulation groove is provided on the top of the inner wall of the fermentation tank, and the stirring mechanism also includes an elastic telescopic part, which is installed on the side of the slider away from the mounting plate, and the elastic telescopic part is slidably arranged in the intracavity circulation groove. During the rotation of the stirring arm, since the elastic telescopic part is restricted in the intracavity circulation groove, the elastic telescopic part slides along the intracavity circulation groove, and the slider is forced to slide, so that the slider slides back and forth along the hollow slide groove on the stirring arm. During the sliding process, the inclination angle of the slider changes with the curvature of the stirring arm. At this time, the spiral stirring rod has three stirring states at the same time. First, the mounting plate drives the rotation of the spiral stirring rod, and secondly, the spiral stirring rod slides back and forth along the direction of the hollow slide groove of the stirring arm and changes the stirring inclination angle. Finally, the rotation of the stirring arm drives the spiral stirring rod to revolve in the fermentation tank. Through the superposition of the three stirring states, the stirring coverage range of the spiral stirring rod is large, the stirring uniformity is better, and the heating uniformity is better.

[0010] Furthermore, the driving mechanism includes a spline shaft, an optical shaft, a worm gear, a worm and a second motor, the spline shaft is connected to the side of the sealing shaft away from the stirring arm, the optical shaft is installed on the side of the spline shaft away from the sealing shaft, a boss is provided on the optical shaft, and the sealing shaft, spline shaft and optical shaft are arranged as one.

[0011] Furthermore, the worm wheel, worm and second motor are all arranged on a mounting bracket, the worm is connected to the motor shaft of the second motor, the worm wheel is meshed with the worm, an internal spline hole is opened in the middle of the worm wheel, and the internal spline hole is slidably connected to the spline shaft.

[0012] Furthermore, the synchronization mechanism includes a synchronous motor and a cylindrical cam, and the synchronous motor and the cylindrical cam are both arranged on a mounting bracket. The synchronous motor is connected to the control system circuit, and the cylindrical cam is connected to the motor shaft of the synchronous motor. A synchronous circulation groove is provided on the inner wall of the cylindrical cam, and the convex column is slidably arranged in the synchronous circulation groove. When the slider slides to the end of the stirring arm, the inclination angle of the slider is the largest, and when the slider approaches the sealing shaft, the inclination angle of the slider is the smallest. Since the greater the inclination angle of the spiral stirring rod, the shallower the stirring depth, the cylindrical cam is driven to rotate by the synchronous motor, and the synchronous circulation groove forces the convex column to move along its trajectory, further forcing the stirring arm to slide up and down while rotating. The rotation of the cylindrical cam maintains a suitable synchronization rate with the rotation of the stirring arm. Whenever the inclination angle of the slider is the largest and the stirring depth of the spiral stirring rod is shallower, the cylindrical cam pushes the optical axis to lower its height, deepens the stirring depth of the spiral stirring rod, thereby compensating for the problem that the stirring depth of the spiral stirring rod becomes shallower due to the change in the inclination angle of the slider.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The spiral stirring rod has three stirring states at the same time. First, the mounting plate drives the spiral stirring rod to rotate. Second, the spiral stirring rod slides back and forth along the hollow slide of the stirring arm and changes the stirring inclination angle. Finally, the rotation of the stirring arm drives the spiral stirring rod to revolve in the fermentation tank. Through the superposition of the three stirring states, the spiral stirring rod has a large stirring coverage, better stirring uniformity, and better heating uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall appearance structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall appearance structure of the present invention is shown in FIG. Figure 2 ; Figure 3 Schematic diagram of the internal structure of the present invention Figure 1 ; Figure 4 Schematic diagram of the internal structure of the present invention Figure 2 ; Figure 5 The structure diagram of the driving mechanism of the present invention is as follows Figure 1 ; Figure 6 The structure diagram of the driving mechanism of the present invention is as follows Figure 2 ; Figure 7 It is a structural schematic diagram of the cylindrical cam of the present invention.

[0015] In the figure: 1. fermentation tank; 2. feed pipe; 3. discharge pipe; 4. peep window; 5. sealing shaft; 6. spline shaft; 7. optical shaft; 8. stirring arm; 9. slider; 10. sliding pin; 11. first motor; 12. mounting plate; 13. spiral stirring rod; 14. worm gear; 15. worm; 16. second motor; 17. synchronous motor; 18. boss; 19. cylindrical cam; 20. elastic telescopic member; 21. intracavity circulation groove; 22. synchronous circulation groove. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0017] Example: Figure 1-Figure 7 As shown, the present invention provides a technical solution, a lactic acid bacteria dairy product fermentation and cultivation equipment with the function of decomposing lactose, including a fermentation tank 1, a feed pipe 2, a discharge pipe 3, a stirring mechanism, a driving mechanism and a synchronization mechanism, the feed pipe 2 and the discharge pipe 3 are respectively connected to the bottom of the fermentation tank 1, and a peek window 4 is provided on the upper part of the fermentation tank 1. The driving mechanism and the synchronization mechanism are arranged above the fermentation tank 1 through a mounting bracket. The driving mechanism includes a sealing shaft 5 and a stirring arm 8. The sealing shaft 5 passes through the top of the fermentation tank 1, and the stirring arm 8 is connected to the sealing shaft 5. The stirring arm 8 is located inside the fermentation tank 1, and the stirring mechanism is arranged on the stirring shaft. On the arm 8, the synchronization mechanism is located above the driving mechanism, solenoid valves are provided in the feed pipe 2 and the discharge pipe 3, an electric heating wire is provided in the inner wall of the fermentation tank 1, and a sealing rubber ring is provided at the contact position between the sealing shaft 5 and the top of the fermentation tank 1. The sealing shaft 5 is sealed and slidably connected to the fermentation tank 1, and the dairy products and fermentation bacteria enter the fermentation tank 1 through the feed pipe 2. The dairy products are heated by the electric heating wire on the inner wall of the fermentation tank 1 and the electric heating wire in the spiral stirring rod 13. The driving mechanism, the stirring mechanism and the synchronization mechanism cooperate to stir the dairy products. After the processing and fermentation are completed, the finished product is discharged through the discharge pipe 3.

[0018] The stirring arm 8 is arc-shaped, and the contour of the stirring arm 8 is the same as the internal contour of the fermentation tank 1. A hollow chute is provided on the stirring arm 8, and side positioning grooves are provided on both sides of the hollow chute. The stirring mechanism includes a slider 9 and four sliding pins 10. The four sliding pins 10 are symmetrically installed on both sides of the slider 9 in pairs. The slider 9 is located in the hollow chute, and the four sliding pins 10 are respectively installed in a pair of side positioning grooves. The stirring mechanism includes a first motor 11, a mounting plate 12 and several spiral stirring rods 13. The first motor 11 is inverted and installed in the slider 9. The first motor 11 is rotated by The circuit is connected to the control system circuit, the mounting disk 12 is connected to the motor shaft of the first motor 11, and several spiral stirring rods 13 are evenly distributed in a ring shape on the mounting disk 12. The spiral diameter of each spiral stirring rod 13 increases linearly, and an electric heating wire is provided in the middle of each spiral stirring rod 13. An intracavity circulation groove 21 is opened at the top of the inner wall of the fermentation tank 1, and the stirring mechanism also includes an elastic telescopic part 20, which is installed on the side of the slider 9 away from the mounting disk 12, and the elastic telescopic part 20 is slidably set in the intracavity circulation groove 21.

[0019] The second motor 16 is energized to drive the worm 15 to rotate, the worm 15 drives the worm wheel 14 to rotate, the worm wheel 14 drives the spline shaft 6 to rotate through the inner spline groove, the sealing shaft 5 and the stirring arm 8 rotate synchronously, the stirring arm 8 drives the stirring mechanism to rotate in the fermentation tank 1, the first motor 11 drives the mounting plate 12 to rotate, the mounting plate 12 drives the spiral stirring rod 13 to rotate, the spiral stirring rod 13 stirs the dairy product, and the electric heating wire heats the dairy product. During the rotation of the stirring arm 8, since the elastic telescopic member 20 is confined in the intracavity circulation groove 21, the elastic telescopic member 20 slides along the intracavity circulation groove 21, and the slider 9 The forced sliding causes the slider 9 to slide back and forth along the hollow slide groove on the stirring arm 8. The inclination angle of the slider 9 changes with the curvature of the stirring arm 8 during the sliding process. At this time, the spiral stirring rod 13 has three stirring states at the same time. First, the mounting plate 12 drives the rotation of the spiral stirring rod 13. Secondly, the spiral stirring rod 13 slides back and forth along the direction of the hollow slide groove of the stirring arm 8 and changes the stirring inclination angle. Finally, the rotation of the stirring arm 8 drives the spiral stirring rod 13 to revolve in the fermentation tank 1. Through the superposition of the three stirring states, the stirring coverage range of the spiral stirring rod 13 is large, the stirring uniformity is better, and the heating uniformity is better.

[0020] The driving mechanism includes a spline shaft 6, an optical shaft 7, a worm wheel 14, a worm 15 and a second motor 16. The spline shaft 6 is connected to the side of the sealing shaft 5 away from the stirring arm 8. The optical shaft 7 is installed on the side of the spline shaft 6 away from the sealing shaft 5. A boss 18 is provided on the optical shaft 7. The sealing shaft 5, the spline shaft 6 and the optical shaft 7 are integrated. The worm wheel 14, the worm 15 and the second motor 16 are all arranged on a mounting bracket. The worm 15 is connected to the motor shaft of the second motor 16. The worm wheel 14 is meshed with the worm 15. An inner spline hole is opened in the middle of the worm wheel 14, and the inner spline hole is slidably connected to the spline shaft 6. The synchronization mechanism includes a synchronous motor 17 and a cylindrical cam 19. The synchronous motor 17 and the cylindrical cam 19 are both arranged on the mounting bracket. The synchronous motor 17 is connected to the control system circuit. The cylindrical cam 19 is connected to the motor shaft of the synchronous motor 17. The cylindrical cam 19 A synchronous circulation groove 22 is provided on the inner wall, and the boss 18 is slidably arranged in the synchronous circulation groove 22. When the slider 9 slides to the end of the stirring arm 8, the inclination angle of the slider 9 is the largest. When the slider 9 is close to the sealing shaft 5, the inclination angle of the slider 9 is the smallest. Since the larger the inclination angle of the spiral stirring rod 13, the shallower the stirring depth, the synchronous motor 17 drives the cylindrical cam 19 to rotate, and the synchronous circulation groove 22 forces the boss 18 to move along its trajectory, further forcing the stirring arm 8 to slide up and down while rotating. The rotation of the cylindrical cam 19 and the rotation of the stirring arm 8 maintain a suitable synchronization rate. Whenever the inclination angle of the slider 9 is the largest and the stirring depth of the spiral stirring rod 13 is shallower, the cylindrical cam 19 pushes the optical axis 7 to lower its height, deepens the stirring depth of the spiral stirring rod 13, thereby compensating for the problem that the stirring depth of the spiral stirring rod 13 becomes shallower due to the change in the inclination angle of the slider 9.

[0021] The working principle of the present invention is as follows: dairy products and fermentation bacteria enter the fermentation tank 1 through the feed pipe 2, the dairy products are heated by the electric heating wire on the inner wall of the fermentation tank 1 and the electric heating wire in the spiral stirring rod 13, the driving mechanism, the stirring mechanism and the synchronization mechanism cooperate to stir the dairy products, and after the processing and fermentation are completed, the finished product is discharged through the discharge pipe 3.

[0022] The second motor 16 is energized to drive the worm 15 to rotate, the worm 15 drives the worm wheel 14 to rotate, the worm wheel 14 drives the spline shaft 6 to rotate through the inner spline groove, the sealing shaft 5 and the stirring arm 8 rotate synchronously, the stirring arm 8 drives the stirring mechanism to rotate in the fermentation tank 1, the first motor 11 drives the mounting plate 12 to rotate, the mounting plate 12 drives the spiral stirring rod 13 to rotate, the spiral stirring rod 13 stirs the dairy product, and the electric heating wire heats the dairy product. During the rotation of the stirring arm 8, since the elastic telescopic member 20 is confined in the intracavity circulation groove 21, the elastic telescopic member 20 slides along the intracavity circulation groove 21, and the slider 9 The forced sliding causes the slider 9 to slide back and forth along the hollow slide groove on the stirring arm 8. The inclination angle of the slider 9 changes with the curvature of the stirring arm 8 during the sliding process. At this time, the spiral stirring rod 13 has three stirring states at the same time. First, the mounting plate 12 drives the rotation of the spiral stirring rod 13. Secondly, the spiral stirring rod 13 slides back and forth along the direction of the hollow slide groove of the stirring arm 8 and changes the stirring inclination angle. Finally, the rotation of the stirring arm 8 drives the spiral stirring rod 13 to revolve in the fermentation tank 1. Through the superposition of the three stirring states, the stirring coverage range of the spiral stirring rod 13 is large, the stirring uniformity is better, and the heating uniformity is better.

[0023] When the slider 9 slides to the end of the stirring arm 8, the inclination angle of the slider 9 is the largest. When the slider 9 approaches the sealing shaft 5, the inclination angle of the slider 9 is the smallest. Since the larger the inclination angle of the spiral stirring rod 13, the shallower the stirring depth, the synchronous motor 17 drives the cylindrical cam 19 to rotate, and the synchronous circulation groove 22 forces the boss 18 to move along its trajectory, further forcing the stirring arm 8 to slide up and down while rotating. The rotation of the cylindrical cam 19 and the rotation of the stirring arm 8 maintain a suitable synchronization rate. Whenever the inclination angle of the slider 9 is the largest and the stirring depth of the spiral stirring rod 13 is shallower, the cylindrical cam 19 pushes the optical axis 7 to lower its height, deepens the stirring depth of the spiral stirring rod 13, and thereby compensates for the problem of the shallowing of the stirring depth of the spiral stirring rod 13 due to the change in the inclination angle of the slider 9.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A lactic acid bacteria dairy product fermentation and cultivation device with the function of decomposing lactose, characterized by: The fermentation tank (1) comprises a fermentation tank (1), a feed pipe (2), a discharge pipe (3), a stirring mechanism, a driving mechanism and a synchronization mechanism, wherein the feed pipe (2) and the discharge pipe (3) are respectively connected to the bottom of the fermentation tank (1), a peep window (4) is provided on the upper part of the fermentation tank (1), the driving mechanism and the synchronization mechanism are arranged above the fermentation tank (1) through a mounting bracket, the driving mechanism comprises a sealing shaft (5) and a stirring arm (8), the sealing shaft (5) passes through the top of the fermentation tank (1), the stirring arm (8) is connected to the sealing shaft (5), the stirring arm (8) is located inside the fermentation tank (1), the stirring mechanism is arranged on the stirring arm (8), and the synchronization mechanism is located above the driving mechanism.

2. The lactic acid bacteria dairy product fermentation and cultivation equipment having the function of decomposing lactose according to claim 1, characterized in that: The feed pipe (2) and the discharge pipe (3) are both provided with electromagnetic valves, the inner wall of the fermentation tank (1) is provided with an electric heating wire, and a sealing rubber ring is provided at the contact position between the sealing shaft (5) and the top of the fermentation tank (1), and the sealing shaft (5) and the fermentation tank (1) are sealed and slidably connected.

3. The lactic acid bacteria dairy product fermentation and cultivation equipment having the function of decomposing lactose according to claim 1, characterized in that: The stirring arm (8) is arc-shaped, and the contour of the stirring arm (8) is the same as the internal contour of the fermentation tank (1). A hollow chute is provided on the stirring arm (8), and side positioning grooves are provided on both sides of the hollow chute. The stirring mechanism includes a slider (9) and four sliding pins (10). The four sliding pins (10) are symmetrically installed on both sides of the slider (9). The slider (9) is located in the hollow chute, and the four sliding pins (10) are respectively installed in a pair of side positioning grooves.

4. The lactic acid bacteria dairy product fermentation and cultivation equipment having the function of decomposing lactose according to claim 3, characterized in that: The stirring mechanism comprises a first motor (11), a mounting plate (12) and a plurality of spiral stirring rods (13), wherein the first motor (11) is mounted upside down in the slider (9), the first motor (11) is connected to the control system circuit via an electric circuit, the mounting plate (12) is connected to the motor shaft of the first motor (11), and the plurality of spiral stirring rods (13) are evenly distributed in an annular shape on the mounting plate (12), the spiral diameter of each spiral stirring rod (13) increases linearly, and an electric heating wire is provided in the middle of each spiral stirring rod (13).

5. The lactic acid bacteria dairy product fermentation and cultivation equipment having the function of decomposing lactose according to claim 4, characterized in that: The top of the inner wall of the fermentation tank (1) is provided with an intracavity circulation groove (21), and the stirring mechanism further comprises an elastic telescopic member (20). The elastic telescopic member (20) is mounted on a side of the slider (9) away from the mounting plate (12), and the elastic telescopic member (20) is slidably arranged in the intracavity circulation groove (21).

6. The lactic acid bacteria dairy product fermentation and cultivation equipment having the function of decomposing lactose according to claim 1, characterized in that: The driving mechanism comprises a spline shaft (6), an optical shaft (7), a worm wheel (14), a worm (15) and a second motor (16); the spline shaft (6) is connected to a side of the sealing shaft (5) away from the stirring arm (8); the optical shaft (7) is mounted on a side of the spline shaft (6) away from the sealing shaft (5); a boss (18) is provided on the optical shaft (7); and the sealing shaft (5), the spline shaft (6) and the optical shaft (7) are integrally arranged.

7. The lactic acid bacteria dairy product fermentation and cultivation equipment having the function of decomposing lactose according to claim 6, characterized in that: The worm wheel (14), the worm (15) and the second motor (16) are all arranged on a mounting bracket, the worm (15) is connected to the motor shaft of the second motor (16), the worm wheel (14) is meshed with the worm (15), an inner spline hole is provided in the middle of the worm wheel (14), and the inner spline hole is slidably connected to the spline shaft (6).

8. The lactic acid bacteria dairy product fermentation and cultivation equipment having the function of decomposing lactose according to claim 6, characterized in that: The synchronization mechanism includes a synchronous motor (17) and a cylindrical cam (19), wherein the synchronous motor (17) and the cylindrical cam (19) are both arranged on a mounting bracket, the synchronous motor (17) is connected to a control system circuit, the cylindrical cam (19) is connected to a motor shaft of the synchronous motor (17), a synchronous circulation groove (22) is provided on the inner wall of the cylindrical cam (19), and the convex column (18) is slidably arranged in the synchronous circulation groove (22).

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