Fermentation equipment for pet food processing

Abstract

The invention discloses fermentation equipment for pet food processing, which comprises a base, a fermentation barrel is clamped in the base, a sealing cover is arranged at the top end of the fermentation barrel, a stirring device which is automatically activated along with the increase of fermentation gas is arranged in the fermentation barrel, and a jacking device for driving the stirring device to reset is arranged in the fermentation barrel. An exhaust device for exhausting redundant gas is arranged in the fermentation barrel; the pressure generated by accumulation of fermentation gas in the stirring device drives the rotating cylinder to move downwards along the rotating shaft, the rotating cylinder rotates synchronously by utilizing a meshing structure of a guide block and a spiral groove of the rotating shaft, materials in the material containing cylinder are driven to abut against inclined planes of spirally-distributed shovel plates, and the materials at the bottom are lifted to the upper portion; automatic stirring without extra power is achieved, sufficient contact between materials and microorganisms is promoted, meanwhile, oxygen introduction caused by manual intervention is avoided, the sealing performance of the anaerobic environment is guaranteed, and the fermentation efficiency and the nutrition conversion rate are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fermentation equipment, in particular to fermentation equipment for processing pet food. Background Art

[0002] Pet food processing and fermentation is a technology that uses microorganisms to process pet food raw materials. During this process, microorganisms break down macromolecules such as proteins and fats in pet food into small molecules such as amino acids and fatty acids that are easier for pets to digest and absorb. At the same time, microorganisms also produce nutrients such as vitamins and enzymes during the fermentation process, greatly improving the nutritional value of the food. In pet food fermentation, there is a special type of fermentation method - anaerobic fermentation. Some specific microorganisms not only do not require oxygen, but oxygen may even inhibit or poison them. In an oxygen-free environment, these anaerobic microorganisms decompose organic matter and produce a variety of metabolites, among which gases such as carbon dioxide are common products. The production of these gases is also one of the important characteristics of the anaerobic fermentation process.

[0003] In the anaerobic fermentation process of pet food, stirring of the fermented food is usually avoided during the production process. This is because stirring can easily cause the material to come into contact with a large amount of air, destroying the oxygen-free environment on which anaerobic microorganisms depend for survival. Once oxygen is introduced, it will directly inhibit the activity of anaerobic microorganisms and interfere with their normal metabolic activities, thereby seriously affecting the fermentation process and product quality. However, this non-stirring operation method may lead to local overheating. Excessive temperature will destroy the enzyme activity in the microorganisms, disrupt the normal metabolic pathway, directly reduce the fermentation efficiency and damage the product quality. At the same time, due to the lack of stirring and mixing, the substrate is difficult to be evenly distributed in the fermentation system, resulting in the microorganisms unable to obtain nutrients evenly, causing uneven fermentation, causing some areas to over-ferment and other areas to be insufficiently fermented, and ultimately seriously affecting the stability of the quality of pet food. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that in the anaerobic fermentation process of pet food, stirring of the fermented food is usually avoided during the production process. This is because stirring can easily cause the material to come into contact with a large amount of air, destroying the anaerobic environment on which anaerobic microorganisms depend for survival. Once oxygen is introduced, it will directly inhibit the activity of anaerobic microorganisms, interfere with their normal metabolic activities, and thus seriously affect the fermentation process and product quality. However, this non-stirring operation mode may lead to local overheating. Excessive temperature will destroy the enzyme activity in the microorganisms, disrupt the normal metabolic pathway, directly reduce the fermentation efficiency, and damage the product quality. At the same time, due to the lack of stirring mixing, the substrate is difficult to be evenly distributed in the fermentation system, resulting in the microorganisms being unable to obtain nutrients evenly, resulting in uneven fermentation levels, causing some areas to over-ferment while other areas to be insufficiently fermented, and ultimately seriously affecting the stability of the quality of pet food. Provided is a fermentation device for pet food processing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fermentation device for processing pet food, comprising: a base, a fermentation barrel clamped to the interior of the base, a stirring device provided within the fermentation barrel that is automatically activated as the fermentation gas increases, a lifting device provided within the fermentation barrel that drives the stirring device to reset, and an exhaust device provided within the fermentation barrel for exhausting excess gas;

[0006] The stirring device includes a rotating shaft fixed to the bottom end of the fermentation barrel, the outer side of the rotating shaft is meshed with a rotating cylinder, a material holding cylinder is slidably inserted in the rotating cylinder, the bottom end of the material holding cylinder is rotatably connected to a rotating ring, the bottom end of the rotating ring is fixedly connected to a spring, one end of the spring is fixedly connected to the bottom end of the fermentation barrel, the bottom end of the fermentation barrel is fixedly connected to a magnetic column, when the bottom end of the rotating ring contacts the top end of the magnetic column, magnetic adsorption is generated, the bottom end of the sealing cover is fixedly connected to a telescopic rod, and the outer side of the outer rod of the telescopic rod is fixedly connected to a shovel plate;

[0007] Among them, when gas is generated in the fermentation barrel, the gas will accumulate in the space between the material barrel and the sealing cover. As the gas continues to increase, the internal pressure gradually increases, pushing the rotating barrel to overcome the pulling force of spring 1 and slide downward. During the downward movement of the rotating barrel, the meshing structure between its inner wall and the rotating shaft causes the rotating barrel to produce a rotational motion, so that the material in the material barrel comes into contact with the inclined surface of the shovel plate on the outer rod of the telescopic rod. Under the guidance of the inclined surface of the shovel plate, the material at the bottom of the material barrel is lifted to the upper part, forming the flipping and mixing of the material.

[0008] As a further solution of the present invention: a sealing cover is provided on the top of the fermentation barrel, an insert is fixedly connected to the outside of the material holding barrel, the insert is slidably plugged into the inner wall of the rotating barrel, a rotating groove is provided at the bottom end of the rotating barrel, the rotating ring is provided in the rotating groove and is rotatably connected to the rotating groove, and the bottom end of the rotating ring is flush with the rotating barrel.

[0009] As a further solution of the present invention: a through hole is formed through the bottom end of the rotating cylinder, a guide block is fixedly connected to the inner wall of the through hole, the rotating shaft passes through the through hole, and the guide block is meshed with the rotating shaft.

[0010] As a further solution of the present invention: the lifting device includes a mounting platform fixedly connected to the bottom end of the fermentation barrel, a mounting hole is opened at the top of the mounting platform, a spring 2 is fixedly connected to the bottom end of the mounting hole, and one end of the spring 2 is fixedly connected to a push-down plate.

[0011] As a further solution of the present invention: the top end of the lower push plate is fixedly connected to a connecting tube, the top end of the connecting tube is fixedly connected to an upper push plate, and the top end of the upper push plate is fixedly connected to a closing plate.

[0012] As a further solution of the present invention: the lifting device also includes an exhaust pipe connected to the side end of the fermentation barrel, the bottom end of the fermentation barrel is fixedly connected to an air bag, one end of the exhaust pipe passes through the fermentation barrel and is connected to the air bag.

[0013] As a further solution of the present invention: one end of the airbag is connected to a connecting pipe, and one end of the connecting pipe is connected to a communicating pipe.

[0014] As a further solution of the present invention: the exhaust device includes a linkage rod fixedly connected to the bottom end of the push-down plate, one end of the linkage rod passes through the bottom end of the fermentation barrel and is fixedly connected to a connecting ring, one end of the connecting ring is fixedly connected to a connecting rod, the top end of the connecting rod is fixedly connected to a blocking block, the blocking block passes through the bottom end of the fermentation barrel and is slidably connected to the bottom end of the airbag, and the top end of the airbag is fixedly connected to a pressure block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, the pressure generated by the accumulation of fermentation gas in the stirring device drives the rotating drum downward along the rotating shaft. The meshing structure of the guide block and the spiral groove of the rotating shaft causes the rotating drum to rotate synchronously, driving the material in the material holding barrel to abut against the inclined surface of the spirally distributed shovel plate, lifting the bottom material to the upper part, achieving automatic stirring without additional power. The sliding plug-in design of the rotating drum and the material holding barrel and the opposite polarity adsorption fixation of the magnetic column and the rotating ring ensure a stable stirring frequency, promote sufficient contact between the material and microorganisms, and avoid manual intervention to introduce oxygen, ensuring the sealing of the anaerobic environment, thereby improving fermentation efficiency and nutrient conversion rate.

[0017] 2. In the present invention, the second spring in the lifting device lifts up the sealing plate in the initial state to block the exhaust pipe, keeping the fermentation chamber airtight. When the rotating drum moves downward and abuts the lower push plate, the second spring is compressed, triggering the exhaust pipe to open. Gas fills the airbag and expands it, pushing the rotating drum, causing it to quickly reset under the elastic force of the first spring. Through the linkage between the upper push plate and the sealing plate, the exhaust pipe is re-blocked after reset, achieving automatic reset of the stirring device and precise control of gas discharge. This not only prevents oxygen infiltration from damaging the anaerobic environment, but also prevents excessive pressure through the dynamic balance of air pressure and elastic force, thereby improving the stability and safety of equipment operation.

[0018] 3. In the present invention, the mechanical linkage between the linkage rod and the block in the exhaust device drives the block to move downward when the rotating cylinder moves downward, and the large diameter of the upper end of the conical block is used to block the bottom end of the airbag to achieve closed gas storage. When the rotating cylinder is reset and moved upward, the block moves upward to form an annular gap between the lower end of the cone and the connecting hole. The gravity of the pressure block at the top of the airbag presses downward to discharge the stored gas smoothly through the gap. The conical structure controls the gas flow rate to avoid sudden pressure increase or backflow, ensure the dynamic balance of air pressure in the fermentation barrel, and improve the reliability and service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a fermentation device for pet food processing according to the present invention;

[0020] Figure 2 This is a cross-sectional view of the overall structure of the fermentation equipment for pet food processing according to the present invention in its initial state;

[0021] Figure 3 This is a cross-sectional view of the overall structure of the fermentation equipment for pet food processing according to the present invention in a stirring state;

[0022] Figure 4 This is a schematic structural diagram of a stirring device in a fermentation device for pet food processing according to the present invention;

[0023] Figure 5 This is a schematic structural diagram of a magnetic column in a fermentation device for pet food processing according to the present invention;

[0024] Figure 6 This is a schematic structural diagram of a rotating drum in a fermentation device for pet food processing according to the present invention;

[0025] Figure 7 This is a schematic structural diagram of a telescopic rod in a fermentation device for pet food processing according to the present invention;

[0026] Figure 8 This is a bottom view of a sealing cover in a fermentation device for processing pet food according to the present invention;

[0027] Figure 9 This is a schematic structural diagram of a connecting cylinder in a fermentation device for pet food processing according to the present invention;

[0028] Figure 10 This is a schematic structural diagram of a mounting platform in a fermentation device for pet food processing according to the present invention;

[0029] Figure 11 This is a schematic structural diagram of an air bag in a fermentation device for pet food processing according to the present invention;

[0030] Figure 12 This is a schematic structural diagram of an exhaust device in a fermentation device for pet food processing according to the present invention;

[0031] Figure 13 The present invention is a schematic structural diagram of a briquette in a fermentation device for processing pet food.

[0032] In the figure: 1. base; 2. fermentation barrel; 3. sealing cover; 4. stirring device; 41. rotating shaft; 42. rotating cylinder; 421. rotating groove; 422. through hole; 423. guide block; 43. material cylinder; 431. insert block; 44. rotating ring; 45. spring 1; 46. magnetic column; 47. telescopic rod; 48. shovel plate; 5. lifting device; 51. connecting cylinder; 52. upper push plate; 53. closing plate; 54. lower push plate; 55. mounting hole; 56. spring 2; 57. exhaust pipe; 58. air bag; 59. connecting pipe; 510. connecting pipe; 511. mounting table; 6. exhaust device; 61. linkage rod; 62. connecting ring; 63. connecting rod; 64. blocking block; 65. pressing block. DETAILED DESCRIPTION

[0033] 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.

[0034] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or connected in one piece; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0035] Reference Figures 1 to 3 In an embodiment of the present invention, a fermentation device for processing pet food includes: a base 1, a fermentation barrel 2 is clamped inside the base 1, a sealing cover 3 is fixedly connected to the top of the fermentation barrel 2 by a buckle, a stirring device 4 is provided in the fermentation barrel 2, which is automatically activated as the fermentation gas increases to stir the fermented food, a lifting device 5 is provided in the fermentation barrel 2, which drives the stirring device 4 to reset as the gas is discharged, and an exhaust device 6 is provided in the fermentation barrel 2 to discharge excess gas after the stirring device 4 is reset.

[0036] Reference Figures 4 to 8The stirring device 4 includes a rotating shaft 41 fixed to the bottom end of the fermentation barrel 2. The top of the rotating shaft 41 is flush with the top of the fermentation barrel 2. The outer surface of the rotating shaft 41 is provided with a spirally wound groove. The outer side of the rotating shaft 41 is meshedly connected with a rotating cylinder 42. The rotating cylinder 42 consists of a group of barrels and a group of cylinders, wherein the barrels and the cylinders are on the same axis, and the cylinders pass through the barrels. A through hole 422 is provided at the bottom end of the cylinder in the rotating cylinder 42. A guide block 423 is fixedly connected to the inner wall of the through hole 422. The rotating shaft 41 passes through the through hole 422, and the guide block 423 is meshed with the spiral groove on the rotating shaft 41. A material holding cylinder 43 is slidably inserted into the rotating cylinder 42. The rotating cylinder 42 consists of a group of barrels and a group of round tubes, wherein the barrels and the round tubes The outer side of the feeding barrel 43 is fixedly connected with an insert 431, and four groups of inserts 431 are symmetrically distributed on the outer side of the feeding barrel 43. The inner wall of the rotating barrel 42 is provided with a slot, and four groups of slots are symmetrically distributed on the inner side of the rotating barrel 42. Each group of inserts 431 is slidably plugged into a group of slots on the inner wall of the rotating barrel 42. A rotating groove 421 is provided at the bottom end of the rotating barrel 42. A rotating ring 44 is rotatably connected in the rotating groove 421, and the bottom end of the rotating ring 44 is flush with the rotating barrel 42. The cross-section of the rotating ring 44 is a convex shape. A spring 45 is fixedly connected to the bottom end of the rotating ring 44. One end of the spring 45 is fixedly connected to the bottom end of the inner side of the fermentation barrel 2. There are four groups of springs 45, which are symmetrically distributed at the bottom end of the rotating ring 44. The end is fixedly connected with a magnetic column 46, and a magnetic block is embedded in the top of the magnetic column 46. The corresponding surface of the bottom end of the rotating ring 44 is also embedded with a magnetic block. The magnetic block at the top of the magnetic column 46 and the corresponding surface of the magnetic block at the bottom end of the rotating ring 44 are of opposite poles, and when the magnetic block at the top of the magnetic column 46 fits and adsorbs with the magnetic block at the bottom end of the rotating ring 44, the magnetism generated is greater than the elastic force of the spring 1 45, so that under the thrust of the gas generated by fermentation, the rotating cylinder 42 moves downward, and the spring 1 45 is forced to shrink until the rotating ring 44 is magnetically adsorbed with the magnetic column 46. After that, when the gas is discharged, the spring 1 45 remains in a contracted state under the action of the magnetic adsorption force of the rotating ring 44 and the magnetic column 46. The bottom end of the sealing cover 3 is fixedly connected with a telescopic rod 47, which is a spring telescopic rod 47, and a spring is provided inside the telescopic rod 47. There are multiple groups of telescopic rods 47 distributed in a spiral shape, and multiple groups of telescopic rods 47 are located on both sides of the interior of the material barrel 43. When the telescopic rods 47 are in a retracted state, their length is less than the depth of the material barrel 43. A shovel plate 48 is fixedly connected to the outer side of the outer rod of each group of telescopic rods 47. There are multiple groups of shovel plates 48, which are evenly distributed on the outer rod of the telescopic rods 47, and the shovel plates 48 are in an inclined state. When the gas produced by fermentation accumulates between the material barrel 43 and the sealing cover 3, the air pressure rises to exceed the tension of the spring 45, the rotating barrel 42 moves downward along the rotating shaft 41, and its inner wall guide block 423 engages with the spiral groove of the rotating shaft 41, forcing the rotating barrel 42 to rotate while moving downward, and the material barrel 43 rotates and moves downward synchronously with the rotating barrel 42, and the material in the barrel contacts the inclined surface of the spirally distributed shovel plates 48.It is lifted along the inclined surface, stirring the bottom material to the upper part. When the rotating ring 44 is in contact with the magnetic column 46, the strong adsorption force of the opposite polarity magnetic block fixes the position of the rotating cylinder 42, ensuring a stable stirring frequency.

[0037] The above scheme is adopted: by utilizing the gas pressure naturally generated during the fermentation process to drive the rotating cylinder 42 to move downward and rotate along the rotating shaft 41, the material in the material cylinder 43 is turned over and mixed from the bottom to the top under the guidance of centrifugal force and the inclined surface of the shovel plate 48. The stirring action can be automatically triggered without an additional power source, avoiding manual intervention to introduce oxygen to pollute the anaerobic environment. The meshing structure of the guide block 423 on the inner wall of the rotating cylinder 42 and the spiral groove of the rotating shaft 41, as well as the spiral inclined distribution of the shovel plate 48, form a three-dimensional stirring path, break the local accumulation of materials, promote full contact between the substrate and microorganisms, and accelerate the decomposition of macromolecules such as protein and fat. Easily absorbed small molecule nutrients improve fermentation efficiency and nutrient conversion rate. The polar magnetic block adsorption design of the rotating ring 44 and the magnetic column 46 stabilizes the position of the rotating cylinder 42 after stirring in place, avoiding structural loss caused by excessive movement, ensuring a constant stirring frequency in the middle stage of fermentation, and ensuring a uniform and controllable fermentation process. The airtight design of the sealing cover 3, the spring contraction structure of the telescopic rod 47 and the adaptive adjustment of the shovel plate 48 allow the stirring process to be carried out completely in an anaerobic environment, which not only achieves efficient stirring of the material but also prevents oxygen infiltration, creating ideal growth conditions for anaerobic microorganisms and improving the safety and quality stability of pet food fermentation.

[0038] Reference Figures 9 to 11The lifting device 5 includes a mounting platform 511 fixedly connected to the bottom end of the fermentation barrel 2. The height of the mounting platform 511 is the same as the height of the magnetic column 46. A mounting hole 55 is opened at the top of the mounting platform 511. There are four groups of mounting holes 55, which are evenly distributed at the top of the mounting platform 511. A group of springs 56 are fixedly connected to the bottom end of each group of mounting holes 55. One end of the spring 56 is fixedly connected to a lower push plate 54. The top of the lower push plate 54 is fixedly connected to a connecting cylinder 51. The rotating cylinder 42 is fitted with the inner wall of the connecting cylinder 51. The top of the connecting cylinder 51 is fixedly connected to an upper push plate 52. The top of the upper push plate 52 is fixedly connected to There is a closing plate 53, and the lifting device 5 also includes an exhaust pipe 57 that is connected to the side end of the fermentation barrel 2. There are four groups of exhaust pipes 57, which are symmetrically distributed on the side end of the fermentation barrel 2. The lower push plate 54 and the upper push plate 52 are both annular and have the same size. The inner diameters of the annular lower push plate 54 and the upper push plate 52 are smaller than the outer diameter of the rotating cylinder 42. The rotating cylinder 42 is located between the lower push plate 54 and the upper push plate 52. When the rotating cylinder 42 moves downward, it will abut against the lower push plate 54. When it moves upward, it will abut against the upper push plate 52. In the initial state, the four groups of springs 56 push the lower push plate 54, the connecting cylinder 51, the upper push plate 52 and The closing plate 53 is lifted up to block the communicating hole between the fermentation barrel 2 and the exhaust pipe 57, so that the top of the rotating cylinder 42 and the bottom of the sealing cover 3 are in a sealed state. The bottom of the fermentation barrel 2 is fixedly connected to an air bag 58. There are four groups of air bags 58. One end of each exhaust pipe 57 passes through the fermentation barrel 2 and is connected to a group of air bags 58. One end of each group of air bags 58 is connected to a group of connecting pipes 59. One end of the four groups of connecting pipes 59 is connected to a group of connecting pipes 510. The connecting pipe 510 is annular. When the rotating cylinder 42 of the stirring device 4 moves down to the bottom due to gas pressure, the outer side of the connecting pipe 510 is connected to the bottom of the rotating cylinder 42. When it abuts against the lower push plate 54, the spring 2 56 is compressed, driving the connecting tube 51 to move downward synchronously, and the closing plate 53 moves downward accordingly, exposing the connecting hole of the exhaust pipe 57. The gas produced by fermentation enters the air bag 58 through the exhaust pipe 57. After the air bag 58 is inflated, the top fan-shaped pressure block 65 pushes the bottom end of the rotating cylinder 42 upward. When the pushing force exceeds the adsorption force of the magnetic column 46, the rotating cylinder 42 quickly moves upward and resets under the elastic force of the spring 1 45. At this time, the spring 2 56 restores its original length, pushing the connecting tube 51 to move upward, and the upper push plate 52 drives the closing plate 53 to re-block the exhaust pipe 57, cutting off the gas passage.

[0039] The above solution is adopted: through the sealing structure design of the closing plate 53 and the spring 2 56, the lifting device 5 is always supported by the spring to tightly seal the exhaust pipe 57 during the fermentation process, and the connecting hole is only briefly exposed when the rotating cylinder 42 moves down to the specified position to prevent the infiltration of external oxygen and damage to the anaerobic environment. When the gas is stored, the lifting device 5 uses the expansion force of the airbag 58 to control the reset timing of the rotating cylinder 42, thereby avoiding excessive pressure in the fermentation chamber, achieving dynamic balance of pressure during the fermentation process, and improving the safety and reliability of the equipment operation.

[0040] Reference Figures 10 to 13 , the exhaust device 6 includes a linkage rod 61 fixedly connected to the bottom end of the lower push plate 54, and the linkage rod 61 is provided with four groups, which are evenly distributed at the bottom end of the lower push plate 54. One end of the linkage rod 61 passes through the bottom end of the fermentation barrel 2 and is fixedly connected to a connecting ring 62. One end of the connecting ring 62 is fixedly connected to a connecting rod 63. There are four groups of connecting rods 63, which are symmetrically distributed on the inner side of the connecting ring 62. The top of each group of connecting rods 63 is fixedly connected to a group of blocking blocks 64. Each group of blocking blocks 64 passes through the bottom end of the fermentation barrel 2 and is slidably plugged into the bottom end of a group of air bags 58. The blocking blocks 64 are conical, larger at the top and smaller at the bottom. A pressing block 65 is fixedly connected to the top of the air bag 58. The pressing block 65 consists of two groups of circular rings and four groups of fan-shaped blocks. Among them, the bottom ends of the four groups of fan-shaped blocks are respectively fixedly connected to the top of a group of air bags 58, and the top of the fan block is connected to the bottom of the rotating cylinder 42. When the rotating cylinder 42 of the stirring device 4 moves downward and abuts the lower push plate 54, the linkage rod 61 drives the connecting ring 62, the connecting rod 63 and the blocking block 64 to move downward synchronously. The large diameter of the upper end of the conical blocking block 64 tightly seals the communicating hole at the bottom end of the air bag 58, so that the air bag 58 forms a closed cavity to store fermentation gas. When the rotating cylinder 42 completes the stirring and resets and moves upward under the action of the expansion force of the air bag 58, the linkage structure drives the blocking block 64 to move upward, and an annular gap is formed between its conical lower end and the communicating hole of the air bag 58 and the fermentation barrel 2. At this time, the pressure block 65 at the top of the air bag 58 presses the air bag 58 downward due to gravity, so that the stored gas is discharged through the conical gap until the internal pressure is balanced, ensuring that the air pressure in the fermentation barrel 2 stably drops back to the initial state.

[0041] The above scheme is adopted: through the mechanical linkage design of the linkage rod 61 and the block 64, the exhaust device 6 automatically blocks the bottom end passage of the air bag 58 when the rotating cylinder 42 moves downward to realize gas storage, and when the rotating cylinder 42 is reset, the annular gap formed by the upward movement of the conical block 64, combined with the gravity of the pressure block 65, discharges the gas in the air bag 58 in an orderly manner to avoid pressure surge and damage to the equipment. Through the structural design of the conical block 64 with a large top and a small bottom, the exhaust device 6 uses the large diameter end to achieve high airtightness storage when sealing, and controls the gas flow rate through the gap between the small diameter end and the connecting hole when exhausting, ensuring that the exhaust process is smooth and controllable, avoiding the gas backflow or leakage problems that may occur in traditional exhaust methods. Through coordination with the lifting device 5, the exhaust device 6 synchronously completes the discharge of residual gas during the resetting process of the rotating cylinder 42, without the need for additional control elements, realizing the full process automation of the fermentation equipment from stirring to exhaust, which not only ensures the sealing of the anaerobic environment, but also improves the safety and reliability of the equipment operation through dynamic pressure balance.

[0042] The working principle of the present invention is as follows: in the initial state, the interior of the fermentation barrel 2 is sealed, the rotating cylinder 42 of the stirring device 4 is in a high position under the support of the spring 45, the closing plate 53 of the lifting device 5 blocks the exhaust pipe 57, and the blocking block 64 of the exhaust device 6 does not completely block the air bag 58. The device is in a standby state. When the microorganisms in the material barrel 43 metabolize to produce gas, carbon dioxide and other gases gradually accumulate in the chamber between the material barrel 43 and the sealing cover 3. The internal air pressure increases with the increase of gas. When the air pressure exceeds the initial tension of the spring 45, the rotating cylinder 42 slides downward along the rotating shaft 41, and its inner wall guide block 423 engages with the spiral groove of the rotating shaft 41, forcing the rotating cylinder 42 to rotate synchronously clockwise when moving downward. The material barrel 43 is connected to the outer plug block 431 through the outer plug block 431. The sliding connection of the slot on the inner wall of the rotating cylinder 42 rotates and moves downward with the rotating cylinder 42, and the material in the cylinder contacts the inclined surface of the shovel plate 48 on the telescopic rod 47 spirally distributed at the bottom end of the sealing cover 3. The material is lifted along the inclined surface of the shovel plate 48 and stirred from the bottom of the material cylinder 43 to the top, thereby achieving mixing of the upper and lower layers of materials. When the rotating cylinder 42 moves down to the rotating ring 44 and fits with the magnetic column 46, the magnetic blocks of the two opposite poles produce a strong adsorption force, and the adsorption force is greater than the elastic force of the spring 1 45, fixing the position of the rotating cylinder 42. At this time, the stirring frequency is stable to ensure uniform fermentation. During the downward movement of the rotating cylinder 42, the spring 2 56 always supports the lower push plate 54, the connecting cylinder 51, the upper push plate 52 and the closing plate 53 to prevent the closing plate 53 from moving downward, thereby maintaining the material cylinder 43 and the sealing cover 3. The closed state of the chamber between the cylinders 51 and 51 is maintained until the bottom end of the rotating cylinder 42 abuts against the lower push plate 54 during the downward movement of the rotating cylinder 42, so that the spring 2 56 is forced to retract into the mounting hole 55, thereby driving the connecting cylinder 51 to move downward synchronously, causing the closing plate 53 on the connecting cylinder 51 to move downward. When the rotating ring 44 is in contact with the magnetic column 46, the exhaust pipe 57 and the communicating hole of the fermentation barrel 2 are exposed, and the closing plate 53 no longer blocks the exhaust pipe 57. The gas enters the airbag 58 through the exhaust pipe 57. When the rotating cylinder 42 abuts against the lower push plate 54 during the downward movement of the rotating cylinder 42, the linkage rod 61 drives the connecting ring 62, the connecting rod 63 and the blocking block 64 to move downward synchronously. The large diameter of the upper end of the conical blocking block 64 blocks the communicating hole at the bottom end of the airbag 58, so that the airbag 58 forms a closed cavity to store gas. As the fermentation continues, the gas The volume of the cylinder 42 gradually increases, and the airbag 58 expands and thickens due to the filling of gas, and the top fan-shaped pressure block 65 pushes the bottom end of the rotating cylinder 42 upward. When the pushing force exceeds the adsorption force of the magnetic column 46, the rotating ring 44 separates from the magnetic column 46, and the rotating cylinder 42 quickly moves up and resets under the elastic force of the spring 1 45, and the gas inside the chamber between the material holding cylinder 43 and the sealing cover 3 is quickly pushed into the airbag 58. At the same time, the spring 2 56 recovers its original length, pushing the connecting cylinder 51 upward. Since the elastic force of the spring 1 45 is greater than the spring 2 56, the upward movement speed of the rotating cylinder 42 is greater than the upward movement speed of the connecting cylinder 51. When the rotating cylinder 42 moves upward, its outer side abuts against the upper push plate 52 of the lifting device 5, driving the connecting cylinder 51 and the lower push plate 54 to move upward synchronously, and the spring 2 56 moves upward.The closing plate 53 moves with the push plate 52, re-blocking the communication hole between the exhaust pipe 57 and the fermentation barrel 2, cutting off the gas entry path. When the rotating cylinder 42 returns to its original position and moves upward, the blocking block 64 moves upward with the linkage structure, and an annular gap is formed between its tapered lower end and the communication hole between the air bag 58 and the fermentation barrel 2. The pressure block 65 at the top of the air bag 58 is pressed downward by gravity, and the gas stored in the air bag 58 is discharged through the gap. The equipment returns to its initial state, completing a fermentation cycle. The pressure generated by the accumulation of fermentation gas in the stirring device 4 drives the rotating cylinder 42 to move downward along the rotating shaft 41, and the guide The meshing structure of the block 423 and the spiral groove of the rotating shaft 41 causes the rotating cylinder 42 to rotate synchronously, driving the material in the material holding cylinder 43 to abut against the inclined surface of the spirally distributed shovel plate 48, lifting the bottom material to the upper part, realizing automatic stirring without additional power. The sliding plug-in design of the rotating cylinder 42 and the material holding cylinder 43 and the opposite polar adsorption fixation of the magnetic column 46 and the rotating ring 44 ensure the stability of the stirring frequency, promote the full contact between the material and the microorganism, and avoid the introduction of oxygen by manual intervention, thereby ensuring the sealing of the anaerobic environment, improving the fermentation efficiency and nutrient conversion rate, and through the lifting device 5 In the initial state, the middle spring 2 56 pushes up the closing plate 53 to block the exhaust pipe 57 and keep the fermentation chamber airtight. When the rotating cylinder 42 moves down and abuts the lower push plate 54, the spring 2 56 is compressed, triggering the exhaust pipe 57 to open. The gas fills the airbag 58 and expands to push the rotating cylinder 42, causing it to quickly reset under the elastic force of the spring 1 45. Through the linkage between the upper push plate 52 and the closing plate 53, the exhaust pipe 57 is re-blocked after reset, realizing the automatic reset of the stirring device 4 and the precise control of gas discharge, which not only prevents oxygen infiltration from destroying the anaerobic environment, but also prevents excessive pressure through the dynamic balance of air pressure and elastic force, thereby improving the stability of equipment operation. To ensure safety and performance, the mechanical linkage between the linkage rod 61 and the block 64 in the exhaust device 6 drives the block 64 downward as the rotating cylinder 42 moves downward. The larger diameter of the upper end of the conical block 64 seals the bottom end of the airbag 58, achieving sealed gas storage. When the rotating cylinder 42 returns to its original position and moves upward, the block 64 moves upward, forming an annular gap between the lower end of the cone and the connecting hole. Combined with the downward force of gravity from the pressure block 65 at the top of the airbag 58, the stored gas is smoothly discharged through the gap. The conical structure controls the gas flow rate, preventing sudden pressure increases or backflow, ensuring dynamic pressure balance within the fermentation barrel 2, and improving the reliability and service life of the equipment.

[0043] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A fermentation device for pet food processing, comprising: A base (1), characterized in that a fermentation barrel (2) is clamped inside the base (1), a stirring device (4) is provided in the fermentation barrel (2) and is automatically activated as the fermentation gas increases, a lifting device (5) is provided in the fermentation barrel (2) for driving the stirring device (4) to reset, and an exhaust device (6) is provided in the fermentation barrel (2) for exhausting excess gas; The stirring device (4) includes a rotating shaft (41) fixed to the bottom end of the fermentation barrel (2), the outer side of the rotating shaft (41) is meshedly connected to a rotating cylinder (42), a material holding cylinder (43) is slidably inserted in the rotating cylinder (42), the bottom end of the material holding cylinder (43) is rotatably connected to a rotating ring (44), the bottom end of the rotating ring (44) is fixedly connected to a spring (45), one end of the spring (45) is fixedly connected to the bottom end of the fermentation barrel (2), the bottom end of the fermentation barrel (2) is fixedly connected to a magnetic column (46), when the bottom end of the rotating ring (44) contacts the top end of the magnetic column (46), magnetic attraction is generated, the bottom end of the sealing cover (3) is fixedly connected to a telescopic rod (47), and the outer side of the outer rod of the telescopic rod (47) is fixedly connected to a shovel plate (48); When gas is generated in the fermentation barrel (2), the gas will accumulate in the space between the material holding barrel (43) and the sealing cover (3). As the gas continues to increase, the internal pressure gradually increases, pushing the rotating barrel (42) to overcome the pulling force of the spring (45) and slide downward. During the downward movement of the rotating barrel (42), the meshing structure between its inner wall and the rotating shaft (41) causes the rotating barrel (42) to produce a rotational motion, so that the material in the material holding barrel (43) comes into contact with the inclined surface of the shovel plate (48) on the outer rod of the telescopic rod (47). Under the guidance of the inclined surface of the shovel plate (48), the material at the bottom of the material holding barrel (43) is lifted to the upper part, forming the turning and mixing of the material.

2. A fermentation equipment for pet food processing according to claim 1, characterized in that: A sealing cover (3) is provided at the top of the fermentation barrel (2), an insert (431) is fixedly connected to the outside of the material holding barrel (43), the insert (431) is slidably plugged into the inner wall of the rotating barrel (42), a rotating groove (421) is provided at the bottom end of the rotating barrel (42), the rotating ring (44) is provided in the rotating groove (421) and is rotatably connected to the rotating groove (421), and the bottom end of the rotating ring (44) is flush with the rotating barrel (42).

3. The fermentation equipment for pet food processing according to claim 2, characterized in that: A through hole (422) is formed through the bottom end of the rotating cylinder (42), a guide block (423) is fixedly connected to the inner wall of the through hole (422), the rotating shaft (41) passes through the through hole (422), and the guide block (423) is meshedly connected to the rotating shaft (41).

4. The fermentation equipment for pet food processing according to claim 3, characterized in that: The lifting device (5) includes a mounting platform (511) fixedly connected to the bottom end of the fermentation barrel (2), a mounting hole (55) is provided at the top of the mounting platform (511), a spring 2 (56) is fixedly connected to the bottom end of the mounting hole (55), and one end of the spring 2 (56) is fixedly connected to a push-down plate (54).

5. The fermentation equipment for pet food processing according to claim 4, characterized in that: The top end of the lower push plate (54) is fixedly connected to a connecting tube (51), the top end of the connecting tube (51) is fixedly connected to an upper push plate (52), and the top end of the upper push plate (52) is fixedly connected to a closing plate (53).

6. The fermentation equipment for pet food processing according to claim 5, characterized in that: The lifting device (5) further includes an exhaust pipe (57) connected to the side end of the fermentation barrel (2), an air bag (58) is fixedly connected to the bottom end of the fermentation barrel (2), and one end of the exhaust pipe (57) passes through the fermentation barrel (2) and is connected to the air bag (58).

7. The fermentation equipment for pet food processing according to claim 6, characterized in that: One end of the airbag (58) is connected to a connecting pipe (59), and one end of the connecting pipe (59) is connected to a communicating pipe (510).

8. The fermentation equipment for pet food processing according to claim 7, characterized in that: The exhaust device (6) includes a linkage rod (61) fixedly connected to the bottom end of the push plate (54), one end of the linkage rod (61) passes through the bottom end of the fermentation barrel (2) and is fixedly connected to a connecting ring (62), one end of the connecting ring (62) is fixedly connected to a connecting rod (63), the top end of the connecting rod (63) is fixedly connected to a blocking block (64), the blocking block (64) passes through the bottom end of the fermentation barrel (2) and is slidably connected to the bottom end of the air bag (58), and the top end of the air bag (58) is fixedly connected to a pressing block (65).

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