A food fermentation tank with self-cleaning function

Abstract

The present invention relates to the field of biological fermentation technology, and specifically to a food fermentation tank with a self-cleaning function. The fermentation tank is provided with a stirring mechanism, the stirring mechanism including a vertically arranged stirring shaft and a rotary driver for driving the stirring shaft to rotate; a mounting ring is slidably sleeved on the stirring shaft, and a support rod is provided on the mounting ring; a cleaning brush, a clamping mechanism and a driving mechanism are provided in the fermentation tank; the clamping mechanism is connected to the cleaning brush; the driving mechanism is used to drive the mounting ring to move along the axial direction of the stirring shaft; when the mounting ring is in an upward state, the support rod of the mounting ring is clamped with the clamping mechanism, and the rotation of the mounting ring drives the cleaning brush to rotate synchronously. The present invention realizes the self-cleaning function of the fermentation tank. After cleaning is completed, the driving mechanism drives the mounting ring to move downward, so that the support rod on the mounting ring is separated from the clamping mechanism, thereby preventing the cleaning brush from affecting the normal operation of the fermentation tank. This solves the problem that the existing fermentation tank cleaning device is independently set and inconvenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of biological fermentation, in particular to a food fermentation tank with a self-cleaning function. Background Art

[0002] Existing fermentation tank cleaning relies primarily on manual labor, requiring operators to use a handheld spray gun to high-pressure flush the tank's interior walls while also physically scrubbing to remove adhering dirt. This traditional cleaning method has significant limitations. It is labor-intensive and inefficient, and due to the tank's structural limitations, there are blind spots for cleaning, leading to the risk of microbial growth and cross-contamination, directly impacting the quality and stability of subsequent fermentation batches.

[0003] To this end, the Chinese patent with authorization announcement number CN118813375B discloses an automatic cleaning device for corn fermentation tanks, which can achieve comprehensive and automatic cleaning of the inner wall of the fermentation tank by utilizing the vertical movement and horizontal rotation of multiple brush rollers; by combining automatic brushing and automatic flushing, the cleaning effect of the inner wall of the fermentation tank can be improved and impurity residue can be avoided; because the rotation axis of the brush roller is horizontal and the distance between it and the sleeve is adjustable, it is convenient to effectively clean the arc surface area of ​​the inner wall of the fermentation tank, avoiding the generation of cleaning dead corners, and this method can realize the cleaning of fermentation tanks of different diameters; the device has a simple structure and is easy to operate, which greatly simplifies the operation method, and it has higher efficiency, better cleaning effect and higher safety, and can effectively solve the problems in fermentation tank cleaning.

[0004] However, current mainstream equipment generally adopts a split-structure design, where the cleaning device is configured as an independent functional module separate from the fermenter. During cleaning, the fermenter needs to be spatially displaced using heavy equipment such as gantry cranes and rail cars, and a single transfer takes a long time. Especially for large fixed fermenter clusters, frequent displacement will cause the wear rate of the tank flange sealing surface to increase by 3.2 times. The tank body is prone to micro-deformation due to inertial loads during lifting, resulting in deviations in the ovality of the inner wall. When transporting the fermenter, a crane or other tools are required to move the fermenter, which is time-consuming and labor-intensive. Summary of the Invention

[0005] In view of the above problems, a food fermentation tank with a self-cleaning function is provided, which solves the problem that the existing fermentation tank cleaning device is independently set and inconvenient to use through a stirring mechanism, a cleaning brush, a clamping mechanism and a driving mechanism.

[0006] In order to solve the problems of the existing technology, the present invention provides a food fermentation tank with a self-cleaning function, wherein a stirring mechanism is provided in the fermentation tank, the stirring mechanism comprising a vertically arranged stirring shaft and a rotary driver for driving the stirring shaft to rotate; a mounting ring is slidably sleeved on the stirring shaft, and a support rod is provided on the mounting ring; a cleaning brush, a clamping mechanism and a driving mechanism are provided in the fermentation tank; the clamping mechanism is connected to the cleaning brush; the driving mechanism is used to drive the mounting ring to move along the axial direction of the stirring shaft; when the mounting ring is in an upward state, the support rod of the mounting ring is clamped with the clamping mechanism, and the rotation of the mounting ring will drive the cleaning brush to rotate synchronously.

[0007] Preferably, the clamping mechanism includes a mounting frame and a limiting assembly; the mounting frame is arranged on the cleaning brush, a rotating shaft is rotatably arranged on the mounting frame, a sleeve is sleeved on the rotating shaft, and a clamping plate is provided on the sleeve; the limiting assembly is used to limit the rotation direction of the clamping plate.

[0008] Preferably, four clip plates are provided on the sleeve, and the four clip plates are distributed in a circular array along the axis of the sleeve; the limiting assembly includes a limiting plate, which is slidable in the horizontal direction on the mounting frame, and limits the rotation direction of the clip plate when the limiting plate abuts against the clip plate.

[0009] Preferably, the limiting assembly includes a movable frame and a first elastic member; the movable frame can be slidably arranged on the mounting frame in the horizontal direction, the movable frame is provided with a folding plate extending in the vertical direction, and the limiting plate is arranged on the folding plate; the two ends of the first elastic member are respectively connected to the mounting frame and the movable frame.

[0010] Preferably, the mounting frame is provided with an elastic protrusion, and the sleeve is provided with a groove that cooperates with the elastic protrusion.

[0011] Preferably, the driving mechanism includes two electromagnets, and the two electromagnets are respectively connected to the support rod and the cleaning brush through rods.

[0012] Preferably, the electromagnet is provided with a photoelectric sensor for positioning.

[0013] Preferably, a nitrogen spring is provided on the cleaning brush, and the piston rod of the nitrogen spring is connected to the mounting frame; a control mechanism is provided on the mounting frame, and the control mechanism includes a first connecting rod assembly and a second connecting rod assembly; the two ends of the first connecting rod assembly are respectively connected to the movable frame and the mounting frame; the two ends of the second connecting rod assembly are respectively connected to the first connecting rod assembly and the nitrogen spring.

[0014] Preferably, the first connecting rod assembly includes a first connecting rod and a second connecting rod; the two ends of the first connecting rod are respectively hinged to the second connecting rod and the movable frame; the second connecting rod is hinged to the mounting frame; the hinged ends of the first connecting rod and the second connecting rod are transmission connected to the second connecting rod assembly.

[0015] Preferably, the second connecting rod assembly includes an articulated seat, a folding rod, a third connecting rod and a fourth connecting rod; the articulated seat is arranged on the nitrogen spring; the folding rod is hinged on the mounting frame, and the two ends of the folding rod are respectively hinged to the third connecting rod and the fourth connecting rod; the third connecting rod is hinged to the articulated seat; the fourth connecting rod is hinged to the second connecting rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention realizes the self-cleaning function of the fermentation tank through a stirring mechanism, a cleaning brush, a clamping mechanism and a driving mechanism. When the fermentation tank is not in working state, the rotary driver stops driving the stirring shaft. The driving mechanism drives the mounting ring to move upward along the axis of the stirring shaft, so that the support rod on the mounting ring is clamped with the clamping mechanism. Then, the stirring shaft is driven to rotate by the rotary driver, and the stirring shaft drives the mounting ring and the support rod to rotate. The support rod pushes the cleaning brush to rotate through the clamping mechanism, and the inner wall of the fermentation tank is cleaned by the cleaning brush. After cleaning is completed, the mounting ring is driven downward by the driving mechanism, so that the support rod on the mounting ring is separated from the clamping mechanism. At this time, when the rotary driver drives the stirring shaft to rotate, the stirring shaft will not drive the cleaning brush to rotate, thereby preventing the cleaning brush from affecting the normal operation of the fermentation tank. This solves the problem that the cleaning device of the existing fermentation tank is independently set and inconvenient to use.

[0018] 2. The present invention utilizes a mounting bracket and a position-limiting assembly to connect the support rod and cleaning brush when the mounting ring is moved upward. The coupling plate on the mounting bracket and the position-limiting assembly cooperate to push the coupling plate into rotation as the support rod moves upward. The position-limiting assembly then restricts the coupling plate from rotating in the opposite direction, preventing the support rod from separating from the coupling mechanism. During this process, the position-limiting assembly maintains the coupling plate in a stable locked state, preventing accidental release due to cleaning resistance while accurately transmitting mechanical loads, ultimately achieving efficient kinetic energy conversion from axial displacement to rotational cleaning.

[0019] 3. The present invention achieves the function of limiting the rotational direction of the clipping plates through the cooperation of four circularly arranged clipping plates and a limit plate. As the support rod moves upward, the clipping plates are pushed, causing the four clipping plates and the sleeve to rotate. Furthermore, the clipping plates, which are in lateral contact with the limit plates, push the limit plates, thereby smoothly completing the rotational movement. When the support rod moves downward, pressure is applied to the upper side of the clipping plates, and the bottom end of the limit plate abuts against the clipping plates, limiting their rotation and ensuring a stable fit between the mounting bracket and the support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of a food fermentation tank with a self-cleaning function according to the present invention;

[0021] Figure 2 This is a three-dimensional schematic diagram of the internal structure of a food fermentation tank with a self-cleaning function according to the present invention;

[0022] Figure 3 It is a three-dimensional schematic diagram of a clamping mechanism, a driving mechanism and a control mechanism in a food fermentation tank with a self-cleaning function of the present invention;

[0023] Figure 4 It is a three-dimensional schematic diagram of the single-side clamping mechanism and the support rod clamping in a food fermentation tank with a self-cleaning function of the present invention;

[0024] Figure 5 It is a three-dimensional schematic diagram of a food fermentation tank with a self-cleaning function according to the present invention, in which a clamping mechanism is in a downwardly moved state;

[0025] Figure 6 It is a three-dimensional schematic diagram of a latching mechanism in a food fermentation tank with a self-cleaning function according to the present invention in a reset state;

[0026] Figure 7 This is a three-dimensional schematic diagram of a food fermentation tank with a self-cleaning function according to the present invention, in which a mounting frame is in an upwardly moved state;

[0027] Figure 8 This is a schematic exploded perspective view of a mounting frame and a clamping plate in a food fermentation tank with a self-cleaning function according to the present invention;

[0028] Figure 9 This is a three-dimensional schematic diagram of a food fermentation tank with a self-cleaning function according to the present invention, in which a clamping mechanism is in an upward state;

[0029] Figure 10 The present invention Figure 9 A partial enlarged schematic diagram of point A in the middle;

[0030] Figure 11 It is a three-dimensional schematic diagram of a mounting bracket and a control mechanism in a food fermentation tank with a self-cleaning function of the present invention when the limiting component releases the rotation restriction on the clamping plate.

[0031] The numbers in the figure are: 1, stirring mechanism; 11, stirring shaft; 111, stirring frame; 12, rotary driver; 13, mounting ring; 131, support rod; 2, cleaning brush; 21, nitrogen spring; 211, piston rod; 22, second elastic member; 3, clamping mechanism; 31, mounting frame; 311, rotating shaft; 312, sleeve; 3121, clamping plate; 3122, groove; 313, elastic protrusion; 32, limit assembly; 321. Limiting plate; 322. Movable frame; 3221. Folding plate; 323. First elastic member; 4. Driving mechanism; 41. Electromagnet; 411. Photoelectric sensor; 5. Control mechanism; 51. First connecting rod assembly; 511. First connecting rod; 512. Second connecting rod; 52. Second connecting rod assembly; 521. Articulated seat; 522. Folding rod; 523. Third connecting rod; 5231. Slide groove; 524. Fourth connecting rod. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figure 1-Figure 3 : A food fermentation tank with a self-cleaning function, a stirring mechanism 1 is provided in the fermentation tank, the stirring mechanism 1 includes a vertically arranged stirring shaft 11 and a rotary driver 12 for driving the stirring shaft 11 to rotate; a mounting ring 13 is slidably sleeved on the stirring shaft 11, and a support rod 131 is provided on the mounting ring 13; a cleaning brush 2, a clamping mechanism 3 and a driving mechanism 4 are provided in the fermentation tank; the clamping mechanism 3 is connected to the cleaning brush 2; the driving mechanism 4 is used to drive the mounting ring 13 to move along the axial direction of the stirring shaft 11; when the mounting ring 13 is in an upward state, the support rod 131 of the mounting ring 13 is clamped with the clamping mechanism 3, and the rotation of the mounting ring 13 will drive the cleaning brush 2 to rotate synchronously.

[0034] The present invention achieves a self-cleaning function for a fermenter through a stirring mechanism 1, a cleaning brush 2, a latching mechanism 3, and a drive mechanism 4. When the fermenter is not in operation, the rotary drive 12 stops driving the stirring shaft 11. The drive mechanism 4 drives the mounting ring 13 upward along the axis of the stirring shaft 11, causing the support rod 131 on the mounting ring 13 to latch with the latching mechanism 3. The rotary drive 12 then rotates the stirring shaft 11, driving the mounting ring 13 and the support rod 131. The support rod 131 rotates the cleaning brush 2 through the latching mechanism 3, thereby cleaning the inner wall of the fermenter. After cleaning is complete, the drive mechanism 4 drives the mounting ring 13 downward, disengaging the support rod 131 on the mounting ring 13 from the latching mechanism 3. At this point, when the rotary drive 12 rotates the stirring shaft 11, the stirring shaft 11 does not rotate the cleaning brush 2, preventing the cleaning brush 2 from interfering with the normal operation of the fermenter. This solves the problem of existing fermenter cleaning devices being independently installed and inconvenient to use. The fermentation tank is provided with a controller for human-machine interaction, the cleaning brush 2 is in contact with the inner wall of the fermentation tank, the rotary driver 12 is preferably a servo motor, and the rotary driver 12 is electrically connected to the controller.

[0035] In operation, the rotary driver 12 drives the agitator shaft 11, which in turn drives the agitator frame 111 and the mounting ring 13. Stirring is performed via the support rod 131 on the mounting ring 13 and the agitator frame 111. When the fermenter is not in operation, the operator drives the mounting ring 13 upward along the axis of the agitator shaft 11 via the drive mechanism 4. The mounting ring 13 drives the support rod 131, causing the support rod 131 to engage with the engaging mechanism 3, thereby connecting the support rod 131 to the cleaning brush 2. After the engaging action is completed, the controller sends a signal to the rotary driver 12. Upon receiving the signal, the rotary driver 12 drives the agitator shaft 11 to rotate, which in turn drives the mounting ring 13. The support rod 131 on the mounting ring 13, via the engaging mechanism 3, pushes the cleaning brush 2 to rotate, thereby cleaning the inner wall of the fermenter.

[0036] Reference Figure 2 and Figure 5 : The clamping mechanism 3 includes a mounting frame 31 and a limiting assembly 32; the mounting frame 31 is arranged on the cleaning brush 2, and a rotating shaft 311 is rotatably provided on the mounting frame 31, a sleeve 312 is sleeved on the rotating shaft 311, and a clamping plate 3121 is provided on the sleeve 312; the limiting assembly 32 is used to limit the rotation direction of the clamping plate 3121.

[0037] The present invention achieves the function of connecting the support rod 131 and the cleaning brush 2 when the mounting ring 13 moves upward through the mounting bracket 31 and the limiting assembly 32. Through the cooperation of the clamping plate 3121 on the mounting bracket 31 and the limiting assembly 32, when the support rod 131 moves upward, the clamping plate 3121 is pushed to rotate. Then, through the clamping plate 3121, the limiting assembly 32 restricts the clamping plate 3121 from rotating in the opposite direction, thereby preventing the support rod 131 from separating from the clamping mechanism 3, completing the clamping connection between the support rod 131 and the mounting bracket 31. Then, the support rod 131 pushes the mounting bracket 31 and the cleaning brush 2 to rotate, and the cleaning work is carried out. The mounting bracket 31 is provided with two rotating shafts 311, each of which is sleeved with a sleeve 312 and a clamping plate 3121. The cleaning brush 2 is provided with at least two mounting brackets 31, and the mounting ring 13 is provided with a support rod 131 corresponding to each mounting bracket 31. In operation, when the drive mechanism 4 drives the mounting ring 13 and the support rod 131 upward, the support rod 131 contacts the two clamping plates 3121, pushing the two clamping plates 3121 to rotate, and then passes between the two clamping plates 3121. After the clamping plates 3121 separate from the support rod 131, the clamping plates 3121 return to their original positions under the action of gravity. When the support rod 131 applies pressure to the clamping plates 3121 from above, the limit assembly 32 restricts the rotation of the clamping plates 3121, thereby preventing the support rod 131 from separating from the mounting bracket 31. This achieves a specific coordination relationship between the support rod 131, the clamping plates 3121, and the mounting bracket 31 in different movement directions, thereby meeting the needs of the cleaning brush 2 at different operating stages. When the support rod 131 applies pressure from above, the limiting assembly 32 is used to limit the rotation of the clamping plate 3121, thereby locking the support rod 131 and the mounting bracket 31 to prevent the two from separating, thereby ensuring the stability of the structure in the working state.

[0038] Reference Figure 5-Figure 7 : Four clamping plates 3121 are provided on the sleeve 312, and the four clamping plates 3121 are distributed in a circular array along the axis of the sleeve 312; the limiting assembly 32 includes a limiting plate 321, and the limiting plate 321 can be slidably arranged on the mounting frame 31 in the horizontal direction. When the limiting plate 321 abuts against the clamping plate 3121, the rotation direction of the clamping plate 3121 is limited.

[0039] The present invention achieves the function of limiting the rotation direction of the clamping plate 3121 through the cooperation of four clamping plates 3121 and the limiting plate 321 distributed in a circular array. When the support rod 131 moves upward, the clamping plate 3121 is pushed, thereby causing the four clamping plates 3121 and the sleeve 312 to rotate. The clamping plate 3121, which is in lateral contact with the limiting plate 321, pushes the limiting plate 321, thereby smoothly completing the rotation action. When the support rod 131 moves downward, pressure is applied to the upper side of the clamping plate 3121, and the bottom end of the limiting plate 321 abuts against the clamping plate 3121, limiting the rotation of the clamping plate 3121, so that the mounting frame 31 and the support rod 131 are stably matched.

[0040] Reference Figure 5-Figure 7 : The limiting assembly 32 includes a movable frame 322 and a first elastic member 323; the movable frame 322 can be slidably arranged on the mounting frame 31 in the horizontal direction, and the movable frame 322 is provided with a folding plate 3221 extending in the vertical direction, and the limiting plate 321 is arranged on the folding plate 3221; the two ends of the first elastic member 323 are respectively connected to the mounting frame 31 and the movable frame 322.

[0041] The present invention realizes the function of pushing the limiting plate 321 to move via the clamping plate 3121 through the movable frame 322, the folding plate 3221, and the first elastic member 323. When the driving mechanism 4 drives the mounting ring 13 and the support rod 131 to move upward, the support rod 131 pushes the clamping plate 3121 in a horizontal state. At this time, the clamping plate 3121 in a vertical state pushes the folding plate 3221 on the movable frame 322. The first elastic member 323 extends under the thrust, and then drives the limiting plate 321 to move through the movable frame 322, so that the clamping plate 3121 completes a 90° rotation. After the clamping plate 3121 and the folding plate 3221 are separated, the movable frame 322 is reset under the elastic force of the first elastic member 323, and the support rod 131 is also restricted to the mounting frame 31 by the clamping plate 3121, maintaining the clamping state between the mounting frame 31 and the support rod 131. Then, when the rotary driver 12 drives the stirring shaft 11 and the mounting ring 13 to rotate, the support rod 131 pushes the mounting frame 31 and the cleaning brush 2 to rotate, thereby performing a cleaning action.

[0042] Reference Figure 6 : An elastic protrusion 313 is provided on the mounting frame 31, and a groove 3122 is provided on the sleeve 312 to cooperate with the elastic protrusion 313.

[0043] The present invention stabilizes the position of the clipping plate 3121 through the elastic protrusions 313 and grooves 3122. Four grooves 3122 are provided, arranged in a circular array along the axis of the sleeve 312. When the elastic protrusions 313 engage the grooves 3122, all four clipping plates 3121 are in either a horizontal or vertical position. When the support rod 131 pushes the clipping plate 3121 to rotate, it is necessary to push the clipping plate 3121 90 degrees each time, so that the clipping plate 3121 can be stably engaged with the limiting plate 321, and the limiting plate 321 limits the rotational direction of the clipping plate 3121. When the support rod 131 pushes the clamping plate 3121, the elastic protrusion 313 deforms and separates from the groove 3122. After the clamping plate 3121 rotates 90 degrees, the elastic protrusion 313 aligns with the groove 3122. Under the action of the elastic force, the elastic protrusion 313 engages with the groove 3122, and at the same time, limits the clamping plate 3121 from further rotation when the clamping plate 3121 is not subjected to a large thrust. After the clamping plate 3121 separates from the folding plate 3221, the movable frame 322 returns to its original position under the elastic force of the first elastic member 323. After the movable frame 322 contacts the clamping plate 3121, it exerts a certain thrust on the clamping plate 3121, and the engagement of the elastic protrusion 313 with the groove 3122 limits the clamping plate 3121 from further rotation.

[0044] Reference Figure 2 and Figure 3 : The driving mechanism 4 includes two electromagnets 41, and the two electromagnets 41 are connected to the support rod 131 and the cleaning brush 2 respectively through rods.

[0045] The present invention realizes the function of driving the mounting ring 13 and the support rod 131 to move through two electromagnets 41. A second elastic member 22 is provided on the mounting ring 13, and the second elastic member 22 is connected to the cleaning brush 2. A gasket is rotatably provided on the mounting ring 13, and the second elastic member 22 is connected to the gasket. The two electromagnets 41 are respectively provided on the cleaning brush 2 and the support rod 131, and both the cleaning brush 2 and the support rod 131 will perform rotational motion. For this reason, a slip ring for connecting electricity is provided on the stirring shaft 11 to ensure the electrical performance of the electromagnet 41. When driving the mounting ring 13 and the support rod 131 to move upward, the operator energizes the two electromagnets 41, and causes the magnetic field force between the two electromagnets 41 to generate an adsorption force, thereby pulling the support rod 131 and the mounting ring 13 to move upward. When the electromagnet 41 stops being energized, the mounting ring 13 has a tendency to reset under the elastic force of the second elastic member 22 . After the operator controls the clamping mechanism 3 to separate from the support rod 131 , the mounting ring 13 and the support rod 131 can be reset under the elastic force of the second elastic member 22 .

[0046] Reference Figure 3 and Figure 4 : A photoelectric sensor 411 for positioning is provided on the electromagnet 41.

[0047] The present invention achieves precise control over the docking of the two electromagnets 41 through a photoelectric sensor 411. The photoelectric sensor 411 is electrically connected to a controller. When the fermenter is stopped from stirring, before the rotary driver 12 stops driving the agitator shaft 11, the rotary driver 12 must reset the agitator shaft 11, placing the two electromagnets 41 in the docked position. This allows the two electromagnets 41 to be energized, generating a magnetic field to control the raising and lowering of the mounting ring 13. To this end, a photoelectric sensor 411 is provided on the electromagnets 41 for positioning. When the two electromagnets 41 are aligned, the photoelectric sensor 411 provides feedback to the controller, which stops the rotary driver 12 and accurately resets the agitator shaft 11 and mounting ring 13. When the two electromagnets 41 mounted on the agitator shaft 11 and mounting ring 13 reach a magnetically coupled state, their built-in photoelectric sensor 411 detects the magnetic field axis deviation in real time and immediately sends a closed-loop control signal to the controller, triggering the rotary driver 12's emergency braking sequence, dynamically locking the angular positions of the agitator shaft 11 and mounting ring 13 at a preset position. This can not only align the two electromagnets 41 , but also ensure that the support rod 131 is smoothly engaged with the engaging mechanism 3 when it moves upward.

[0048] Reference Figure 3 、 Figure 4 and Figure 6 : A nitrogen spring 21 is provided on the cleaning brush 2, and the piston rod 211 of the nitrogen spring 21 is connected to the mounting frame 31; a control mechanism 5 is provided on the mounting frame 31, and the control mechanism 5 includes a first connecting rod assembly 51 and a second connecting rod assembly 52; the two ends of the first connecting rod assembly 51 are respectively connected to the movable frame 322 and the mounting frame 31; the two ends of the second connecting rod assembly 52 are respectively connected to the first connecting rod assembly 51 and the nitrogen spring 21.

[0049] The present invention utilizes the first connecting rod assembly 51, the second connecting rod assembly 52, and the nitrogen spring 21 to control the movement of the movable frame 322 by raising and lowering the support rod 131. This, in turn, controls the rotational restriction of the clamping plate 3121 by the limit assembly 32 through the movement of the movable frame 322. When the drive mechanism 4 controls the upward movement of the mounting ring 13 and the support rod 131, the support rod 131 pushes the clamping plate 3121 to rotate, completing the clamping action. During this process, the support rod 131 pushes the mounting frame 31 upward, the piston rod 211 of the nitrogen spring 21 contracts, and the mounting frame 31 is in an upward position. The limit assembly 32 restricts the rotational direction of the clamping plate 3121. The controller then de-energizes the electromagnet 41. When the support rod 131 is no longer subject to the magnetic field force, the mounting frame 31 returns to its original position under the elastic force of the nitrogen spring 21, and the mounting ring 13 returns to its original position under the elastic force of the second elastic member 22. When the mounting frame 31 is in the reset state, the limit assembly 32 limits the rotation direction of the clamping plate 3121. After cleaning is completed, the electromagnet 41 is energized, and a repulsive magnetic field force is generated between the two electromagnets 41, pushing the support rod 131 further downward. The support rod 131 pushes the clamping plate 3121, and in turn pushes the mounting frame 31 downward. The piston rod 211 of the nitrogen spring 21 extends, and the second connecting rod assembly 52 is subjected to tension. The torque is transmitted through the first connecting rod assembly 51 to push the movable frame 322 to move. The first elastic member 323 extends, and the movable frame 322 drives the limit plate 321 to move, so that the limit plate 321 is separated from the clamping plate 3121, and the rotation restriction of the clamping plate 3121 by the limit assembly 32 is released.

[0050] Reference Figure 6 、 Figures 9-11 : The first connecting rod assembly 51 includes a first connecting rod 511 and a second connecting rod 512; the two ends of the first connecting rod 511 are respectively hinged to the second connecting rod 512 and the movable frame 322; the second connecting rod 512 is hinged to the mounting frame 31; the hinged ends of the first connecting rod 511 and the second connecting rod 512 are transmission connected to the second connecting rod assembly 52.

[0051] The present invention realizes the function of connecting the movable frame 322 and the mounting frame 31 through the first connecting rod 511 and the second connecting rod 512, and cooperates with the second connecting rod assembly 52 to control the movement of the movable frame 322. When the driving mechanism 4 drives the support rod 131 to move downward, the support rod 131 pulls the clamping plate 3121, which in turn pushes the mounting frame 31 downward, and the piston rod 211 of the nitrogen spring 21 extends, and the second connecting rod assembly 52 is subjected to a tensile force. Then, the first connecting rod 511 and the second connecting rod 512 are pushed from the hinge point of the first connecting rod 511 and the second connecting rod 512. The first connecting rod 511 and the second connecting rod 512 rotate under the action of this thrust, thereby pushing the movable frame 322 to move in a direction away from the mounting frame 31, so that the limit plate 321 is separated from the clamping plate 3121. The rotation restriction of the clamping plate 3121 by the limit assembly 32 is released. Then, the clamping plate 3121 rotates under the push of the support rod 131, and the support rod 131 separates from the mounting bracket 31. The mounting bracket 31 is reset under the elastic force of the nitrogen spring 21. The controller then de-energizes the electromagnet 41, and the support rod 131 and the mounting ring 13 are reset under the elastic force of the second elastic member 22.

[0052] Reference Figure 6 、 Figures 9-11 : The second connecting rod assembly 52 includes a hinged seat 521, a folding rod 522, a third connecting rod 523 and a fourth connecting rod 524; the hinged seat 521 is set on the nitrogen spring 21; the folding rod 522 is hinged on the mounting frame 31, and the two ends of the folding rod 522 are hinged to the third connecting rod 523 and the fourth connecting rod 524 respectively; the third connecting rod 523 is hinged to the hinged seat 521; the fourth connecting rod 524 is hinged to the second connecting rod 512.

[0053] The present invention utilizes a hinged seat 521, a folding rod 522, a third connecting rod 523, and a fourth connecting rod 524 to control the movement of the movable frame 322 through the expansion and contraction of the nitrogen spring 21. A fixed shaft is provided on the hinged seat 521, and a slide groove 5231 is provided on the third connecting rod 523. The slide groove 5231 on the third connecting rod 523 is movably hinged to the fixed shaft. When the support rod 131 moves downward toward the downward position, the fourth connecting rod 524 pulls the folding rod 522 to rotate. The folding rod 522 pushes the fourth connecting rod 524 through the third connecting rod 523. This thrust causes the third and fourth connecting rods 523 and 524 to rotate, thereby pushing the movable frame 322 away from the mounting frame 31. The movable frame 322 drives the limiting plate 321 to move. After the limiting plate 321 separates from the clamping plate 3121, the rotation restriction imposed by the limiting assembly 32 on the clamping plate 3121 is released. This allows the clamping plate 3121 to separate from the support rod 131, releasing the clamping state between the clamping mechanism 3 and the support rod 131. Due to the cooperation between the sliding groove 5231 and the fixed shaft, when the mounting bracket 31 is in the upward movement state, the piston rod 211 of the nitrogen spring 21 is in the contracted state, and the third connecting rod 523 moves upward under the action of the thrust. The avoidance effect of the sliding groove 5231 on the third connecting rod 523 prevents the third connecting rod 523 from affecting the upward movement of the mounting bracket 31.

[0054] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A food fermentation tank with a self-cleaning function, wherein a stirring mechanism (1) is provided in the fermentation tank, the stirring mechanism (1) comprising a vertically arranged stirring shaft (11) and a rotary driver (12) for driving the stirring shaft (11) to rotate; It is characterized by: A mounting ring (13) is slidably sleeved on the stirring shaft (11), and a support rod (131) is provided on the mounting ring (13); A cleaning brush (2), a clamping mechanism (3) and a driving mechanism (4) are provided in the fermentation tank; The clamping mechanism (3) is connected to the cleaning brush (2); The driving mechanism (4) is used to drive the mounting ring (13) to move along the axis direction of the stirring shaft (11); When the mounting ring (13) is in an upward state, the support rod (131) of the mounting ring (13) is engaged with the engaging mechanism (3), and the rotation of the mounting ring (13) drives the cleaning brush (2) to rotate synchronously; The clamping mechanism (3) includes a mounting frame (31) and a limiting assembly (32); The mounting frame (31) is arranged on the cleaning brush (2); a rotating shaft (311) is rotatably arranged on the mounting frame (31); a sleeve (312) is sleeved on the rotating shaft (311); and a clamping plate (3121) is provided on the sleeve (312); The limiting assembly (32) is used to limit the rotation direction of the clamping plate (3121); Four clamping plates (3121) are provided on the sleeve (312), and the four clamping plates (3121) are distributed in a circular array along the axis of the sleeve (312); The limiting assembly (32) includes a limiting plate (321), which is slidably arranged on the mounting frame (31) in a horizontal direction, and limits the rotation direction of the clamping plate (3121) when the limiting plate (321) abuts against the clamping plate (3121); The limiting assembly (32) includes a movable frame (322) and a first elastic member (323); The movable frame (322) is slidably arranged on the mounting frame (31) in a horizontal direction, a folding plate (3221) extending in a vertical direction is provided on the movable frame (322), and the limiting plate (321) is arranged on the folding plate (3221); Both ends of the first elastic member (323) are respectively connected to the mounting frame (31) and the movable frame (322).

2. A food fermentation tank with self-cleaning function according to claim 1, characterized in that: An elastic protrusion (313) is provided on the mounting frame (31), and a groove (3122) that cooperates with the elastic protrusion (313) is provided on the sleeve (312).

3. The food fermentation tank with self-cleaning function according to claim 1, characterized in that: The driving mechanism (4) comprises two electromagnets (41), and the two electromagnets (41) are respectively connected to the support rod (131) and the cleaning brush (2) through rods.

4. The food fermentation tank with self-cleaning function according to claim 3, characterized in that: A photoelectric sensor (411) for positioning is provided on the electromagnet (41).

5. The food fermentation tank with self-cleaning function according to claim 1, characterized in that: A nitrogen spring (21) is provided on the cleaning brush (2), and a piston rod (211) of the nitrogen spring (21) is connected to a mounting frame (31); A control mechanism (5) is provided on the mounting frame (31), and the control mechanism (5) includes a first connecting rod assembly (51) and a second connecting rod assembly (52); Both ends of the first connecting rod assembly (51) are respectively connected to the movable frame (322) and the mounting frame (31); Both ends of the second connecting rod assembly (52) are respectively connected to the first connecting rod assembly (51) and the nitrogen spring (21).

6. The food fermentation tank with self-cleaning function according to claim 5, characterized in that: The first connecting rod assembly (51) includes a first connecting rod (511) and a second connecting rod (512); Both ends of the first connecting rod (511) are hinged to the second connecting rod (512) and the movable frame (322) respectively; The second connecting rod (512) is hinged to the mounting frame (31); The hinged ends of the first connecting rod (511) and the second connecting rod (512) are transmission-connected to the second connecting rod assembly (52).

7. The food fermentation tank with self-cleaning function according to claim 5, characterized in that: The second connecting rod assembly (52) includes a hinged seat (521), a folding rod (522), a third connecting rod (523), and a fourth connecting rod (524); The hinge seat (521) is arranged on the nitrogen spring (21); The folding rod (522) is hinged on the mounting frame (31), and both ends of the folding rod (522) are hinged to the third connecting rod (523) and the fourth connecting rod (524) respectively; The third connecting rod (523) is hinged to the hinge seat (521); The fourth connecting rod (524) is hinged to the second connecting rod (512).

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