Food fermentation tank with self-cleaning function

Abstract

The invention relates to the technical field of biological fermentation, in particular to a food fermentation tank with a self-cleaning function, a stirring mechanism is arranged in the fermentation tank, and the stirring mechanism comprises a vertically arranged stirring shaft and a rotation driver for driving the stirring shaft to rotate; the stirring shaft is slidably sleeved with a mounting ring, and a supporting rod is arranged on the mounting ring; a cleaning brush, a clamping mechanism and a driving mechanism are arranged in the fermentation tank; the clamping mechanism is connected with the cleaning brush; the driving mechanism is used for driving the mounting ring to move along the axis direction of the stirring shaft; when the mounting ring is in an upward moving state, the supporting rod of the mounting ring is clamped with the clamping mechanism, and the mounting ring rotates to drive the cleaning brush to rotate synchronously. The self-cleaning function of the fermentation tank is achieved, and after cleaning is completed, the driving mechanism drives the mounting ring to move downwards, so that the supporting rods on the mounting ring are separated from the clamping mechanisms, and the situation that normal work of the fermentation tank is affected by the cleaning brush is avoided. The problem that an existing fermentation tank cleaning device is independently arranged and inconvenient to use is solved.

Description

Technical Field

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

[0002] The cleaning of existing fermentation tanks mainly relies on manual operation. Workers need to hold a spray gun to perform high-pressure flushing on the inner wall of the tank, and at the same time cooperate with physical brushing to remove the attached dirt. This traditional cleaning mode has significant limitations. It not only has a large labor intensity and low operation efficiency, but also has cleaning dead corners due to the limitation of the tank structure, resulting in the risk of microbial growth and the hidden danger of cross-contamination, directly affecting the fermentation quality stability of subsequent batches.

[0003] For this reason, a Chinese patent with the authorization announcement number CN118813375B discloses an automatic cleaning device for a corn fermentation tank. By using the movement of multiple brush rollers in the vertical direction and rotation in the horizontal direction, it can realize the comprehensive and automatic cleaning work of the inner wall of the fermentation tank; by adopting the combination of automatic brushing and automatic flushing, the cleaning effect of the inner wall of the fermentation tank can be improved, and impurity residues can be avoided; since the self-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 work of fermentation tanks with different diameters; the device has a simple structure and is easy to operate, greatly simplifying the operation method, and it has higher efficiency, better cleaning effect and higher safety, and can effectively solve the problems in the cleaning of fermentation tanks.

[0004] However, current mainstream equipment generally adopts a split architecture design, that is, the cleaning device is configured separately from the fermentation tank as an independent functional module. During cleaning, it is necessary to use heavy equipment such as gantry cranes and rail cars to displace the fermentation tank in space, and the single transfer takes a long time. Especially for a fixed large fermentation tank cluster, frequent displacement will increase the wear rate of the flange sealing surface of the tank by 3.2 times. The tank is prone to micro-deformation under the action of inertial load during hoisting, resulting in deviation of the inner wall ovality. When transporting the fermentation tank, it is necessary to use a crane or other tools to move the fermentation tank, which is time-consuming and laborious. 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 of inconvenient use due to the independent setting of the existing fermentation tank cleaning device through a stirring mechanism, a cleaning brush, a clamping mechanism and a driving mechanism.

[0006] To solve the problems of the existing technology, the present invention provides a food fermentation tank with a self-cleaning function. A stirring mechanism is provided inside the fermentation tank. The stirring mechanism includes a vertically arranged stirring shaft and a rotary driver for driving the rotation of the stirring shaft. An installation ring is slidably sleeved on the stirring shaft, and a support rod is provided on the installation ring. A cleaning brush, a clamping mechanism, and a driving mechanism are provided inside the fermentation tank. The clamping mechanism is connected to the cleaning brush. The driving mechanism is used to drive the installation ring to move along the axis direction of the stirring shaft. When the installation ring is in the upward movement state, the support rod of the installation ring is clamped with the clamping mechanism, and the rotation of the installation ring will drive the cleaning brush to rotate synchronously.

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

[0008] Preferably, four clamping plates are provided on the sleeve, and the four clamping plates are circularly arranged along the axis of the sleeve. The limiting component includes a limiting plate, and the limiting plate is slidably arranged on the installation frame in the horizontal direction. When the limiting plate abuts against the clamping plate, the rotation direction of the clamping plate is limited.

[0009] Preferably, the limiting component includes a movable frame and a first elastic member. The movable frame is slidably arranged on the installation frame in the horizontal direction. A folding plate extending in the vertical direction is provided on the movable frame, and the limiting plate is arranged on the folding plate. The two ends of the first elastic member are respectively connected to the installation frame and the movable frame.

[0010] Preferably, an elastic convex block is provided on the installation frame, and a groove cooperating with the elastic convex block is provided on the sleeve.

[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, a photoelectric sensor for positioning is provided on the electromagnet.

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

[0014] Preferably, the first link assembly includes a first link and a second link. The two ends of the first link are respectively hinged to the second link and the movable frame. The second link is hinged to the installation frame. The hinged ends of the first link and the second link are in transmission connection with the second link assembly.

[0015] Preferably, the second link assembly includes a hinge seat, a folding rod, a third link, and a fourth link; the hinge seat is arranged on the nitrogen spring; the folding rod is hinged to the mounting bracket, and both ends of the folding rod are respectively hinged to the third link and the fourth link; the third link is hinged to the hinge seat; the fourth link is hinged to the second link.

[0016] The beneficial effects of the present invention compared with the prior art are as follows: 1. The present invention realizes the self-cleaning function of the fermentation tank through the stirring mechanism, the cleaning brush, the clamping mechanism, and the driving mechanism. When the fermentation tank is not in the 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 rotary driver drives the stirring shaft to rotate. The stirring shaft drives the mounting ring and the support rod to rotate. The support rod drives the cleaning brush to rotate through the clamping mechanism, and the inner wall of the fermentation tank is cleaned by the cleaning brush. After the 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. At this time, when the rotary driver drives the stirring shaft to rotate, the stirring shaft will not drive the cleaning brush to rotate, avoiding the cleaning brush from affecting the normal operation of the fermentation tank. It solves the problem that the cleaning device of the existing fermentation tank is independently arranged and inconvenient to use.

[0017] 2. The present invention realizes the function of connecting the support rod and the cleaning brush when the mounting ring moves upward through the mounting bracket and the limiting component. Through the cooperation of the clamping plate on the mounting bracket and the limiting component, when the support rod moves upward, it pushes the clamping plate to rotate. Then, through the clamping plate, the limiting component will limit the reverse rotation of the clamping plate, thereby preventing the support rod from separating from the clamping mechanism. During this process, the limiting component always maintains the stable locking state of the clamping plate, which not only prevents accidental tripping caused by cleaning resistance but also can accurately transmit mechanical loads, ultimately realizing the efficient kinetic energy conversion from axial displacement to rotary cleaning.

[0018] 3. The present invention realizes the function of restricting the rotation direction of the clamping plate through the cooperation of four clamping plates and limiting plates distributed in a circular array. When the support rod moves upward, it pushes the clamping plate, so that the four clamping plates and the sleeve rotate. And the clamping plate in lateral contact with the limiting plate pushes the limiting plate, thus smoothly completing the rotation action. When the support rod moves downward, a pressure is applied to the upper side of the clamping plate, and the bottom end of the limiting plate abuts against the clamping plate, restricting the rotation of the clamping plate, so that the mounting bracket and the support rod are stably matched. Description of the Drawings

[0019] Figure 1 is a three-dimensional schematic diagram of a food fermentation tank with a self-cleaning function according to the present invention; Figure 2 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; Figure 3It is a three-dimensional schematic diagram of the clamping mechanism, driving mechanism and control mechanism in a food fermentation tank with self-cleaning function of the present invention; Figure 4 It is a three-dimensional schematic diagram of the unilateral clamping mechanism and the strut clamping in a food fermentation tank with self-cleaning function of the present invention; Figure 5 It is a three-dimensional schematic diagram of the clamping mechanism in a downward movement state in a food fermentation tank with self-cleaning function of the present invention; Figure 6 It is a three-dimensional schematic diagram of the clamping mechanism in a reset state in a food fermentation tank with self-cleaning function of the present invention; Figure 7 It is a three-dimensional schematic diagram when the mounting frame is in an upward movement state in a food fermentation tank with self-cleaning function of the present invention; Figure 8 It is a three-dimensional exploded schematic diagram of the mounting frame and the clamping plate in a food fermentation tank with self-cleaning function of the present invention; Figure 9 It is a three-dimensional schematic diagram when the clamping mechanism is in an upward movement state in a food fermentation tank with self-cleaning function of the present invention; Figure 10 It is of the present invention Figure 9 The partial enlarged schematic diagram at A in; Figure 11 It is a three-dimensional schematic diagram of the mounting frame love and control mechanism in a food fermentation tank with self-cleaning function of the present invention when the rotation restriction of the clamping plate is released by the limit component.

[0020] The reference numerals in the figure are: 1, stirring mechanism; 11, stirring shaft; 111, stirring frame; 12, rotary driver; 13, mounting ring; 131, strut; 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 bump; 32, limit component; 321, limit plate; 322, movable frame; 3221, folding plate; 323, first elastic member; 4, driving mechanism; 41, electromagnet; 411, photoelectric sensor; 5, control mechanism; 51, first link assembly; 511, first link; 512, second link; 52, second link assembly; 521, hinge seat; 522, folding rod; 523, third link; 5231, chute; 524, fourth link. Detailed implementation manners

[0021] To further understand the features, technical means and the specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific implementation manners.

[0022] Reference Figures 1-3 : A food fermentation tank with a self-cleaning function. A stirring mechanism 1 is provided inside the fermentation tank. The stirring mechanism 1 includes a vertically arranged stirring shaft 11 and a rotary driver 12 for driving the rotation of the stirring shaft 11. An installation ring 13 is slidably sleeved on the stirring shaft 11, and a support rod 131 is provided on the installation ring 13. A cleaning brush 2, a clamping mechanism 3, and a driving mechanism 4 are provided inside the fermentation tank. The clamping mechanism 3 is connected to the cleaning brush 2. The driving mechanism 4 is used to drive the installation ring 13 to move along the axis of the stirring shaft 11. When the installation ring 13 is in the upward movement state, the support rod 131 of the installation ring 13 is clamped with the clamping mechanism 3, and the rotation of the installation ring 13 will drive the cleaning brush 2 to rotate synchronously.

[0023] The present invention realizes the self-cleaning function of the fermentation tank through the stirring mechanism 1, the cleaning brush 2, the clamping mechanism 3, and the driving mechanism 4. When the fermentation tank is not in the working state, the rotary driver 12 stops driving the stirring shaft 11. The driving mechanism 4 drives the installation ring 13 to move upward along the axis of the stirring shaft 11, so that the support rod 131 on the installation ring 13 is clamped with the clamping mechanism 3. Then, the rotary driver 12 drives the stirring shaft 11 to rotate. The stirring shaft 11 drives the installation ring 13 and the support rod 131 to rotate. The support rod 131 pushes the cleaning brush 2 to rotate through the clamping mechanism 3, and the inner wall of the fermentation tank is cleaned by the cleaning brush 2. After the cleaning is completed, the driving mechanism 4 drives the installation ring 13 to move downward again, so that the support rod 131 on the installation ring 13 is separated from the clamping mechanism 3. At this time, when the rotary driver 12 drives the stirring shaft 11 to rotate, the stirring shaft 11 will not drive the cleaning brush 2 to rotate, avoiding the cleaning brush 2 from affecting the normal operation of the fermentation tank. It solves the problem that the existing cleaning device of the fermentation tank is independently set and inconvenient to use. A controller for human-machine interaction is provided on the fermentation tank. The cleaning brush 2 abuts against 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. A stirring frame 111 is sleeved on the stirring shaft 11.

[0024] In the working state, the rotary driver 12 drives the stirring shaft 11 to rotate. The stirring shaft 11 drives the stirring frame 111 and the installation ring 13 to rotate, and the stirring work is carried out through the support rod 131 on the installation ring 13 and the stirring frame 111. When the fermentation tank is not in the working state, the operator drives the installation ring 13 to move upward along the axis of the stirring shaft 11 through the driving mechanism 4. The installation ring 13 drives the support rod 131 to move, so that the support rod 131 is clamped with the clamping mechanism 3, achieving the effect of connecting the support rod 131 and the cleaning brush 2. After the clamping action is completed, a signal is sent to the rotary driver 12 through the controller. After receiving the signal, the rotary driver 12 drives the stirring shaft 11 to rotate. The stirring shaft 11 drives the installation ring 13 to rotate. The support rod 131 on the installation ring 13 pushes the cleaning brush 2 to rotate through the clamping mechanism 3, and the inner wall of the fermentation tank is cleaned by the cleaning brush 2.

[0025] Reference Figure 2 and Figure 5 : The clamping mechanism 3 includes a mounting frame 31 and a limiting component 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 arranged on the sleeve 312; the limiting component 32 is used to limit the rotation direction of the clamping plate 3121.

[0026] The present invention realizes the function of connecting the support rod 131 and the cleaning brush 2 when the mounting ring 13 moves upward through the mounting frame 31 and the limiting component 32. Through the cooperation of the clamping plate 3121 on the mounting frame 31 and the limiting component 32, when the support rod 131 moves upward, it pushes the clamping plate 3121 to rotate, and then through the clamping plate 3121, and the limiting component 32 will limit the reverse rotation of the clamping plate 3121, thereby preventing the support rod 131 from separating from the clamping mechanism 3, completing the clamping of the support rod 131 and the mounting frame 31, and then driving the mounting frame 31 and the cleaning brush 2 to rotate through the support rod 131 to perform the cleaning work. There are two rotating shafts 311 on the mounting frame 31, and a sleeve 312 and a clamping plate 3121 are sleeved on each rotating shaft 311. And there are at least two mounting frames 31 on the cleaning brush 2, and support rods 131 corresponding to the mounting frames 31 one by one are arranged on the mounting ring 13. In the working state, when the driving mechanism 4 drives the mounting ring 13 and the support rod 131 to move upward, after the support rod 131 contacts the two clamping plates 3121, it pushes the two clamping plates 3121 to rotate, and then passes through the two clamping plates 3121 through the clamping plate 3121. After the clamping plate 3121 separates from the support rod 131, the clamping plate 3121 resets under the action of gravity. And when the support rod 131 applies pressure to the clamping plate 3121 from above the clamping plate 3121, the limiting component 32 restricts the rotation of the clamping plate 3121, thereby restricting the separation of the support rod 131 from the mounting frame 31. A specific cooperation relationship between the support rod 131 and the clamping plate 3121 and the mounting frame 31 in different movement directions is realized to meet the requirements of the cleaning brush 2 in different working stages. When the support rod 131 applies pressure from above, the limiting component 32 is used to restrict the rotation of the clamping plate 3121, thereby locking the support rod 131 and the mounting frame 31 to prevent them from separating and ensuring the stability of the structure in the working state.

[0027] Reference Figures 5-7 : There are four clamping plates 3121 arranged 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 component 32 includes a limiting plate 321, the limiting plate 321 is slidably arranged on the mounting frame 31 in the horizontal direction, and the limiting plate 321 restricts the rotation direction of the clamping plate 3121 when it abuts against the clamping plate 3121.

[0028] The present invention realizes the function of restricting the rotation direction of the clamping plate 3121 through the cooperation of four clamping plates 3121 distributed in a circular array and the limiting plate 321. When the support rod 131 moves upward, it pushes the clamping plate 3121, thereby causing the four clamping plates 3121 and the sleeve 312 to rotate. And the clamping plate 3121 in lateral contact with the limiting plate 321 pushes the limiting plate 321, thus 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, restricting the rotation of the clamping plate 3121, so that the mounting bracket 31 and the support rod 131 are stably matched.

[0029] Refer to Figures 5-7 : The limiting component 32 includes a movable frame 322 and a first elastic member 323; the movable frame 322 is slidably arranged on the mounting bracket 31 in the horizontal direction, a folding plate 3221 extending in the 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 bracket 31 and the movable frame 322.

[0030] The present invention realizes the function of pushing the limiting plate 321 to move through the clamping plate 3121 by means of 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 the horizontal state. At this time, the clamping plate 3121 in the vertical state pushes the folding plate 3221 on the movable frame 322, and the first elastic member 323 elongates 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 is separated from the folding plate 3221, the movable frame 322 resets under the elastic force of the first elastic member 323, and the support rod 131 is also restricted on the mounting bracket 31 by the clamping plate 3121, maintaining the clamping state of the mounting bracket 31 and the support rod 131. Furthermore, when the rotary drive 12 drives the stirring shaft 11 and the mounting ring 13 to rotate, the mounting bracket 31 and the cleaning brush 2 are pushed by the support rod 131 to perform the cleaning action.

[0031] Refer to Figure 6 : The mounting bracket 31 is provided with an elastic convex block 313, and the sleeve 312 is provided with a groove 3122 cooperating with the elastic convex block 313.

[0032] The present invention realizes the function of stabilizing the position of the clamping plate 3121 through the elastic bump 313 and the groove 3122. There are four grooves 3122, and the four grooves 3122 are circularly arrayed along the axis of the sleeve 312. When the elastic bump 313 is docked with the groove 3122, all four clamping plates 3121 are in a horizontal state or a vertical state. When the support rod 131 pushes the clamping plate 3121 to rotate, it is necessary to push the clamping plate 3121 to rotate 90° each time, so that the clamping plate 3121 can be stably matched with the limiting plate 321, and the rotation direction of the clamping plate 3121 is restricted by the limiting plate 321. When the support rod 131 pushes the clamping plate 3121, the elastic bump 313 deforms and separates from the groove 3122. After the clamping plate 3121 rotates 90°, the elastic bump 313 aligns with the groove 3122, and the elastic bump 313 is clamped with the groove 3122 under the action of elastic force, and at the same time restricts the further rotation of the clamping plate 3121 when the clamping plate 3121 is not subjected to a large thrust. When the clamping plate 3121 separates from the folding plate 3221, the movable frame 322 resets under the elastic force of the first elastic member 323, and when the movable frame 322 contacts the clamping plate 3121, it will exert a certain thrust on the clamping plate 3121, and the further rotation of the clamping plate 3121 is restricted by the docking of the elastic bump 313 and the groove 3122.

[0033] Refer to Figure 2 and Figure 3 : The driving mechanism 4 includes two electromagnets 41, and the two electromagnets 41 are respectively connected to the support rod 131 and the cleaning brush 2 through rods.

[0034] The present invention realizes the function of driving the movement of the mounting ring 13 and the support rod 131 through two electromagnets 41. A second elastic member 22 is provided on the mounting ring 13, 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 movements. Therefore, a slip ring for connecting electricity is provided on the stirring shaft 11 to ensure the power-on 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 makes the magnetic field force between the two electromagnets generate an adsorption force, thereby pulling the support rod 131 and the mounting ring 13 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 separation of the clamping mechanism 3 from the support rod 131, the mounting ring 13 and the support rod 131 can reset under the elastic force of the second elastic member 22.

[0035] Refer to Figure 3 and Figure 4 : The electromagnet 41 is provided with a photoelectric sensor 411 for positioning.

[0036] The present invention realizes the function of accurately controlling the docking of two electromagnets 41 through the photoelectric sensor 411. The photoelectric sensor 411 is electrically connected to the controller. When stopping the stirring operation of the fermentation tank, before the rotary driver 12 stops driving the stirring shaft 11, it is necessary to control the reset of the stirring shaft 11 through the rotary driver 12 so that the two electromagnets 41 are in the docking position, and then control the lifting of the mounting ring 13 by generating a magnetic force by energizing the two electromagnets 41. For this purpose, a photoelectric sensor 411 for positioning is provided on the electromagnet 41. When the two electromagnets 41 are aligned, the photoelectric sensor 411 feeds back a signal to the controller, and the controller stops driving the rotary driver 12, thereby accurately completing the reset of the stirring shaft 11 and the mounting ring 13. When the two electromagnets 41 mounted on the stirring shaft 11 and the mounting ring 13 reach the magnetic pole coupling state, its built-in photoelectric sensor 411 detects the magnetic field axis deviation amount in real time, immediately sends a closed-loop control signal to the controller, and triggers the emergency stop braking program of the rotary driver 12, so that the angular positions of the stirring shaft 11 and the mounting ring 13 are dynamically locked at the preset working positions. It can not only align the two electromagnets 41, but also ensure that the support rod 131 is smoothly clamped with the clamping mechanism 3 when moving upward.

[0037] Refer to 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 bracket 31; a control mechanism 5 is provided on the mounting bracket 31, and the control mechanism 5 includes a first link assembly 51 and a second link assembly 52; both ends of the first link assembly 51 are respectively connected to the movable bracket 322 and the mounting bracket 31; both ends of the second link assembly 52 are respectively connected to the first link assembly 51 and the nitrogen spring 21.

[0038] The present invention realizes the function of controlling the movement of the movable frame 322 by lifting and lowering the support rod 131 through the first connecting rod assembly 51, the second connecting rod assembly 52 and the nitrogen spring 21, and then controls the rotation restriction of the clamping plate 3121 by the limit assembly 32 through the movement of the movable frame 322. When the driving mechanism 4 controls the mounting ring 13 and the support rod 131 to move upward, the support rod 131 pushes the clamping plate 3121 to rotate, and the clamping action is completed. In this process, the support rod 131 pushes the mounting frame 31 to move upward, the piston rod 211 of the nitrogen spring 21 contracts, the mounting frame 31 is in an upward state, and the limit assembly 32 limits the rotation direction of the clamping plate 3121. Then the controller cancels the power supply of the electromagnet 41, and when the support rod 131 is no longer affected by the magnetic field force, the mounting frame 31 is reset under the elastic force of the nitrogen spring 21, and the mounting ring 13 is reset 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 control electromagnet 41 is energized, and a repulsive magnetic field force is generated between the two electromagnets 41, pushing the support rod 131 to move further downward, and the support rod 131 pushes the clamping plate 3121, thereby pushing the mounting frame 31 downward, and the piston rod 211 of the nitrogen spring 21 is extended, and then the second connecting rod assembly 52 is subjected to a tensile force, and the torque is transmitted through the first connecting rod assembly 51 to push the movable frame 322 to move, the first elastic member 323 is extended, 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.

[0039] 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.

[0040] 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, and then pushes the mounting frame 31 to move downward, and the piston rod 211 of the nitrogen spring 21 extends, and the second connecting rod assembly 52 is subjected to a pulling force. Furthermore, 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 this thrust, and then push the movable frame 322 to move away from the mounting frame 31, so that the limiting plate 321 is separated from the clamping plate 3121. The rotation restriction of the clamping plate 3121 by the limiting component 32 is released. Then the clamping plate 3121 rotates under the pushing action of the support rod 131, the support rod 131 is separated from the mounting frame 31, and the mounting frame 31 returns to its original position under the elastic force of the nitrogen spring 21. Then the controller cancels the power supply of the electromagnet 41, and the support rod 131 and the mounting ring 13 return to their original positions under the elastic force of the second elastic member 22.

[0041] Refer to Figure 6 、 Figures 9-11 : The second connecting rod assembly 52 includes a hinge 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 respectively hinged to the third connecting rod 523 and the fourth connecting rod 524; 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.

[0042] The present invention realizes the function of controlling the movement of the movable frame 322 through the telescopic movement of the nitrogen spring 21 by means of the hinge seat 521, the folding rod 522, the third connecting rod 523 and the fourth connecting rod 524. A fixed shaft is provided on the hinge seat 521, and a sliding groove 5231 is formed on the third connecting rod 523. The sliding groove 5231 on the third connecting rod 523 is movably hinged to the fixed shaft. When the support rod 131 moves downward and switches to the downward movement state, 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. The third connecting rod 523 and the fourth connecting rod 524 rotate under this thrust, and then push the movable frame 322 to move away from the mounting frame 31. The movable frame 322 drives the limiting plate 321 to move. After the limiting plate 321 is separated from the clamping plate 3121, the rotation restriction of the limiting component 32 on the clamping plate 3121 is released. So that the clamping plate 3121 can be separated from the support rod 131, and the clamping state between the clamping mechanism 3 and the support rod 131 is released. Through the cooperation of the sliding groove 5231 and the fixed shaft, when the mounting frame 31 is in the upward movement state, the piston rod 211 of the nitrogen spring 21 is in the contracted state. The third connecting rod 523 moves upward under the thrust. Through the avoidance effect of the sliding groove 5231 on the third connecting rod 523, the influence of the third connecting rod 523 on the upward movement of the mounting frame 31 is avoided.

[0043] The above embodiments only represent one or several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to 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, wherein the stirring mechanism (1) comprises a vertically arranged stirring shaft (11) and a rotary drive (12) for driving the stirring shaft (11) to rotate; It is characterized in that 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 upwardly moving 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.

2. A food fermentation tank with self-cleaning function according to claim 1, characterized in that: The clamping mechanism (3) comprises 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 arranged on the sleeve (312); The limiting assembly (32) is used to limit the rotation direction of the clamping plate (3121).

3. A food fermentation tank with self-cleaning function according to claim 2, characterized in that: 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) comprises 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).

4. A food fermentation tank with self-cleaning function according to claim 3, characterized in that: The limiting assembly (32) comprises 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 arranged on the movable frame (322), and the limiting plate (321) is arranged on the folding plate (3221); Two ends of the first elastic member (323) are respectively connected to the mounting frame (31) and the movable frame (322).

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

6. 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.

7. The food fermentation tank with self-cleaning function according to claim 6, characterized in that: A photoelectric sensor (411) for positioning is provided on the electromagnet (41).

8. The food fermentation tank with self-cleaning function according to claim 4, 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) comprises a first connecting rod assembly (51) and a second connecting rod assembly (52); Two ends of the first connecting rod assembly (51) are respectively connected to the movable frame (322) and the mounting frame (31); Two ends of the second connecting rod assembly (52) are respectively connected to the first connecting rod assembly (51) and the nitrogen spring (21).

9. The food fermentation tank with self-cleaning function according to claim 8, characterized in that: The first connecting rod assembly (51) comprises a first connecting rod (511) and a second connecting rod (512); Both 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).

10. The food fermentation tank with self-cleaning function according to claim 8, characterized in that: The second connecting rod assembly (52) comprises 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 two ends of the folding rod (522) are respectively hinged to the third connecting rod (523) and the fourth connecting rod (524); 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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