Device for preventing infectious microbe pollution of probiotics fermented vegetables

Abstract

The invention relates to the field of vegetable fermentation devices, and discloses a probiotic fermented vegetable infectious microbe pollution prevention device which comprises a fermentation tank, a rotating cover is rotationally arranged at the top end of the fermentation tank, a pollution prevention mechanism is arranged at the top end of the rotating cover, and a sampling mechanism is arranged on one side of the bottom of the fermentation tank. A circulation mechanism is arranged outside the fermentation tank, the anti-pollution mechanism comprises a constant-pressure air cylinder, the bottom end of the constant-pressure air cylinder is fixedly connected to the top end of the rotating cover, the driving end of the constant-pressure air cylinder is fixedly connected with a transmission column, and the bottom end of the transmission column is fixedly connected with an extrusion plate. Initial sealing of the rotating cover is combined with cooperative action of multiple components driven by the constant-pressure air cylinder, physical isolation is formed by the extrusion plate and the gland, dynamic sealing and residue scraping functions of the Y-shaped sealing ring are matched, fermentation gas is discharged in order and is isolated from external air through the flow guide plate, the sealing ferrule and the one-way valve, oxygen is eliminated from the physical level, and the fermentation effect is improved. Infectious microbe breeding is fundamentally inhibited.

Description

Technical Field

[0001] This invention relates to the field of vegetable fermentation equipment technology, specifically to a device for preventing contamination by other microorganisms in probiotic-fermented vegetables. Background Technology

[0002] Probiotic-fermented vegetables hold a significant position in the food industry due to their rich nutritional content, unique flavor, and positive effects on human gut health, with continuously growing market demand. The fermentation process is a crucial stage in the interaction between probiotics and the vegetable substrate. However, contamination by other microorganisms is a core issue affecting the quality, safety, and shelf life of fermented vegetables. The excessive proliferation of these microorganisms not only disrupts the microecological balance of the fermentation system, leading to reduced probiotic activity, but may also produce harmful substances, causing product spoilage, flavor deterioration, and even threatening consumer health. Therefore, developing efficient and reliable anti-contamination devices to ensure the purity of the fermentation process has become an urgent need for the development of the probiotic-fermented vegetable industry.

[0003] In existing technologies, contamination prevention devices for probiotic fermented vegetables mostly use a sealed fermentation tank as the core structure, combined with a simple sealing lid, stirring mechanism, and sampling components to achieve basic fermentation functions. Their working principle is generally as follows: the fermentation tank is sealed by the lid to reduce the intrusion of external air and contaminants; during fermentation, a stirring mechanism such as a stirring paddle agitates the fermentation liquid inside the tank to achieve a uniform distribution of parameters such as salinity and acidity; when it is necessary to monitor the fermentation process, the sealing lid is opened or a simple sampling tube is inserted into the tank to extract a sample. Some devices incorporate a sealing ring at the sealing lid to enhance the seal, or add an insulation layer to the outside of the fermentation tank to maintain stable fermentation temperature, thereby indirectly reducing the risk of contaminant growth.

[0004] However, existing sealing structures are poorly designed, mostly using static sealing methods. This fails to ensure both the smooth release of fermentation gases and effective isolation from external air. Furthermore, vegetable residue easily remains in the sealing components, creating a breeding ground for bacteria. It also struggles to completely eliminate oxygen within the tank, allowing bacteria to multiply. Secondly, the stirring mechanism severely damages the vegetables; traditional rigid stirring paddles easily disrupt the vegetable's structure during stirring, affecting the product's taste and appearance. Moreover, the stirring uniformity is limited, and parameter differences may still exist between the upper and lower layers of the tank, making localized areas prone to bacterial growth. Additionally, the inconvenience of disassembling and assembling related piping components increases the difficulty of cleaning and maintenance. Finally, the sampling methods are flawed. Whether sampling by opening the sealed lid or using a simple sampling tube, the sealed environment of the fermentation tank is disrupted, allowing external bacteria to invade. The sampling process is also cumbersome, making it difficult to quickly obtain representative samples, and the samples are easily contaminated, affecting the accuracy of monitoring results. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a device for preventing contamination by probiotic fermented vegetables. It solves the problems of poor sealing of fermentation devices, easy residue leading to the growth of miscellaneous bacteria, damage to vegetables and insufficient parameter uniformity of stirring mechanisms, and the disruption of the sealed environment, cumbersome operation and easy contamination of samples during the sampling process.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a device for preventing contamination by probiotic fermented vegetables, comprising a fermentation tank, a rotating cover rotatably provided at the top of the fermentation tank, an anti-contamination mechanism provided at the top of the rotating cover, a sampling mechanism provided on one side of the bottom of the fermentation tank, and a circulation mechanism provided outside the fermentation tank. The anti-pollution mechanism includes a constant pressure cylinder, the bottom end of which is fixedly connected to the top of the rotating cover. A transmission column is fixedly connected to the drive end of the constant pressure cylinder. A pressing plate is fixedly connected to the bottom end of the transmission column. A pressure cap is fixedly connected to the outside of the transmission column. A guide plate is fixedly connected to the outside of the transmission column. A sealing assembly is provided on the outside of the pressure cap and the guide plate. A one-way valve is fixedly connected to the top of the rotating cover.

[0007] Preferably, the sealing assembly includes a Y-shaped sealing ring, the outside of which is fixedly connected to the inside of the gland, and a sealing sleeve is fixedly connected to the outside of the guide plate.

[0008] Preferably, the guide plate is a concave arc plate used to guide the gas, and the extrusion plate has multiple unclog holes inside to facilitate the flow of liquid.

[0009] Preferably, the circulation mechanism includes a flow tube, which is fixedly connected to the outside of the fermenter. A docking assembly is provided inside the flow tube. One end of the flow tube is connected to the bottom of the fermenter via a water pump. A venturi tube is fixedly connected to the other end of the flow tube. A corrugated pipe is fixedly connected to the bottom of the venturi tube. A connecting pipe is fixedly connected to the bottom of the corrugated pipe. A cavity is provided inside the pressure cap.

[0010] Preferably, the external part of the connecting tube is fixedly connected to the inside of the gland and the guide plate, and the external part of the venturi tube is fixedly connected to the inside of the rotating cover.

[0011] Preferably, the docking assembly includes a fixed tube, the fixed tube is fixedly connected to the outside of the flow tube, a rotating cap is threadedly connected to the outside of the fixed tube, a follower tube is fixedly connected to the inside of the rotating cap, a sliding block is fixedly connected to the outside of the flow tube, and a density pad is fixedly connected to the inside of the fixed tube.

[0012] Preferably, the inner sides of the fixed tube and the follower tube are provided with sliding grooves, the outer side of the sliding block is slidably connected to the inside of the sliding groove, and the outer side of the flow tube is in contact with the outer side of the density pad, thus ensuring a sealing effect.

[0013] Preferably, the sampling mechanism includes a fixed box, which is fixedly connected to the bottom side of the fermenter. A sliding box is slidably connected inside the fixed box, and a collection box is rotatably connected inside the sliding box. A rotating handle is rotatably connected to the outside of the fixed box. A threaded rod is fixedly connected to the outside of the rotating handle. A connecting post is threadedly connected to the outside of the threaded rod. A rotating post is rotatably connected inside the rotating handle. A rotating handle is fixedly connected to one end of the rotating post. A rotating post is slidably connected to the outside of the rotating post. A fixing block is fixedly connected to the outside of the rotating post.

[0014] Preferably, the rotating column 2 has a groove inside, and the fixed block is slidably connected to the inside of the groove.

[0015] Preferably, the fixed box and the sliding box have slots on their exteriors for collecting and displaying objects, the collection box has a collection cavity inside for storing objects, the connecting column is fixedly connected to the exterior of the sliding box, the rotating column two is rotatably connected to the interior of the sliding box, and the end of the rotating column two away from the rotating column one is fixedly connected to the interior of the collection box.

[0016] This invention provides a device for preventing contamination by other microorganisms in probiotic-fermented vegetables. It has the following beneficial effects: 1. This invention achieves initial sealing by rotating the lid to close. With the help of a constant pressure cylinder, the transmission components drive the extrusion plate, the lid, and the guide plate to work together. The extrusion plate pushes the fermented vegetables below the liquid to prevent them from contacting the air. The lid adheres to the liquid surface to form a physical barrier. Combined with the dynamic sealing characteristics of the Y-shaped sealing ring, it allows fermentation gas to escape while preventing external air from entering. At the same time, the Y-shaped sealing ring can scrape off residual vegetable residue on the tank wall to keep it clean. The escaped gas is guided by the guide plate and blocked by the sealing ring before being discharged through the one-way valve. This eliminates oxygen from the physical structure and inhibits the growth of miscellaneous bacteria from the source.

[0017] 2. In the fermentation process, the present invention uses a water pump to draw fermentation liquid from the tank, which is then transported to a venturi tube for acceleration via a flow pipe. The length of the corrugated pipe is adaptively adjusted, and the liquid is then injected into the cap cavity through a connecting pipe and sprayed back into the tank through a nozzle, thus realizing the circulation of fermentation liquid. This ensures that the salinity and acidity of the upper and lower layers in the tank are uniform, avoiding damage to the vegetables caused by traditional stirring. The circulating sprayed brine can continuously flush the top of the tank, further preventing the growth of miscellaneous bacteria. At the same time, the docking component can realize the quick disassembly and sealing connection of the flow pipe, taking into account both circulation stability and equipment maintenance convenience.

[0018] 3. During sampling, the present invention drives the transmission structure by rotating the operating component, so that the sliding component slides from the fixed shell into the tank. Then, another rotating operating component drives the collection component to rotate and expose the collection port. After the sample enters the collection chamber, the reverse rotation closes the collection port. Finally, the sliding component is operated in reverse to move the collection component out of the tank. The entire sampling process does not require opening the fermentation tank. It achieves rapid sampling while maintaining a sealed environment inside the tank, avoiding the invasion of external bacteria during the sampling process, and ensuring the authenticity and representativeness of the sample. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the flow tube structure of the present invention; Figure 3 This is a schematic diagram of the structure of the guide plate of the present invention; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the structure of the follower tube of the present invention; Figure 6 This is a schematic diagram of the structure of the fixing box of the present invention; Figure 7 This is a schematic diagram of the structure of the collection box of the present invention; Figure 8 for Figure 7 Enlarged view of point B in the middle.

[0020] The components are as follows: 1. Fermentation tank; 2. Rotating cover; 3. Anti-pollution mechanism; 31. Constant pressure cylinder; 32. Transmission column; 33. Extrusion plate; 34. Pressure cap; 35. Guide plate; 36. Sealing assembly; 361. Y-shaped sealing ring; 362. Sealing sleeve; 37. One-way valve; 4. Circulation mechanism; 41. Flow pipe; 42. Connecting assembly; 421. Rotating cap; 422. Fixed pipe; 423. Follower pipe; 424. Sliding block; 425. Density pad; 43. Venturi tube; 44. Corrugated pipe; 45. Connecting pipe; 46. Cavity; 5. Sampling mechanism; 51. Fixed box; 52. Sliding box; 53. Collection box; 54. Connecting column; 55. Threaded rod; 56. Rotating handle one; 57. Rotating handle two; 58. Rotating column one; 59. Fixed block; 510. Rotating column two. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] See Figure 1 , Figure 3 and Figure 4 This invention provides a device for preventing contamination by probiotic fermented vegetables, including a fermentation tank 1. The fermentation tank 1 provides a sealed and stable environment for the fermentation reaction of probiotics and vegetables, effectively isolating the initial contamination from external bacteria. A rotating cover 2 is rotatably installed at the top of the fermentation tank 1. The rotating cover 2 can be opened and closed flexibly, which facilitates the addition of vegetables to be fermented and the removal of products after fermentation, and also reduces the entry path of bacteria after closing. An anti-contamination mechanism 3 is installed at the top of the rotating cover 2. The anti-contamination mechanism 3, through multiple sealing and deoxygenation designs, physically cuts off the oxygen conditions for the growth of bacteria and is the core functional module for the device's anti-contamination function. A sampling mechanism 5 is installed on one side of the bottom of the fermentation tank 1. The sampling mechanism 5 can complete sample collection without damaging the sealed environment of the fermentation tank 1, avoiding the entry of external bacteria into the tank during the sampling process. A circulation mechanism 4 is installed outside the fermentation tank 1. The circulation mechanism 4 can achieve uniform circulation of the fermentation liquid, ensure consistent environmental parameters inside the tank, and inhibit the growth of local bacteria. The anti-pollution mechanism 3 includes a constant pressure cylinder 31, which provides stable and continuous downward pressure to the transmission components, ensuring precise sealing and extrusion actions. The bottom end of the constant pressure cylinder 31 is fixedly connected to the top end of the rotating cover 2. This installation method ensures the structural stability of the constant pressure cylinder 31 during operation and avoids a decrease in sealing effect due to vibration. The drive end of the constant pressure cylinder 31 is fixedly connected to a transmission column 32, which acts as a power transmission carrier, synchronously transmitting the driving force of the constant pressure cylinder 31 to the extrusion plate 33, the pressure cap 34, and the guide plate 35, realizing coordinated action of multiple components. A squeezing plate 33 is fixedly connected to the bottom end of the moving column 32. The squeezing plate 33 can push the vegetables to be fermented to the bottom of the liquid, preventing the vegetables from floating and contacting the air, which would lead to the growth of miscellaneous bacteria. A pressure cap 34 is fixedly connected to the outside of the moving column 32. The pressure cap 34 fits against the liquid surface to form a physical barrier, preventing external air from contacting the liquid. A guide plate 35 is fixedly connected to the outside of the moving column 32. The guide plate 35 can concentrate and guide the gas produced during fermentation, ensuring that the gas is discharged smoothly without affecting the sealing effect. A sealing assembly 36 is provided on the outside of the pressure cap 34 and the guide plate 35. The sealing assembly 36 provides double sealing. The airtightness of the structural reinforcement device further prevents air from entering. A one-way valve 37 is fixedly connected to the top of the rotating cover 2. The one-way valve 37 only allows gas inside the tank to escape and prevents external air from flowing in backward, blocking the intrusion of bacteria from the exhaust channel. The sealing assembly 36 includes a Y-shaped sealing ring 361. The Y-shaped sealing ring 361 achieves dynamic sealing by utilizing the elastic deformation of the lip. When pressed down, it allows gas to escape, and when external air enters, it fits tightly against the tank wall. The external part of the Y-shaped sealing ring 361 is fixedly connected to the inside of the pressure cap 34. This installation position ensures that the Y-shaped sealing ring 361 can act precisely on the pressure cap 34 and the inside of the pressure cap 34. The can wall's contact surface enhances sealing reliability. A sealing ring 362 is fixedly connected to the outside of the guide plate 35. The sealing ring 362 can prevent the escaped gas from contacting the outside air and avoid gas backflow carrying bacteria. The guide plate 35 is a concave arc plate used to guide the gas. This shape design can reduce gas flow resistance, allowing the gas to quickly converge and be guided to the one-way valve 37. The squeezing plate 33 has multiple unblocking holes inside to facilitate liquid flow. The unblocking holes allow the liquid to pass through the squeezing plate 33, ensuring uniform liquid distribution during squeezing and avoiding excessive local pressure that could damage the vegetables.

[0023] Reference Figures 2 to 5The circulation mechanism 4 includes a flow pipe 41, which provides a transport channel for the circulation of fermentation broth, ensuring smooth liquid flow. The flow pipe 41 is externally fixed to the outside of the fermentation tank 1. This installation method does not occupy the fermentation space inside the tank and ensures the sealing of the connection between the flow pipe 41 and the tank body. The flow pipe 41 is internally equipped with a docking component 42, which enables quick assembly and disassembly of the flow pipe 41 while ensuring a sealing effect after assembly and disassembly, facilitating equipment maintenance and cleaning. One end of the flow pipe 41 is connected to the bottom of the fermentation tank 1 via a water pump, which provides power for the circulation of fermentation broth, ensuring that the liquid can be smoothly drawn from the bottom of the tank and transported to the upper part of the tank. The other end of the flow pipe 41 is fixedly connected to a Venturi tube 43, which accelerates the flow rate of the fermentation broth, creating a uniform spray effect when the liquid passes through the connecting pipe 45. The bottom end of the Venturi tube 43 is fixedly connected to a corrugated pipe 44. The corrugated tube 44 can adaptively adjust the position of the anti-pollution mechanism 3 to ensure that the circulation channel is always unobstructed and unaffected by changes in liquid level. The bottom end of the corrugated tube 44 is fixedly connected to the connecting pipe 45, which accurately delivers the circulating liquid to the inside of the pressure cap 34 to provide guidance for spraying. The pressure cap 34 has a cavity 46 inside, which can temporarily store the circulating liquid, making the pressure uniform when the liquid passes through the nozzle and the spray range wider. The connecting pipe 45 is externally fixedly connected to the inside of the pressure cap 34 and the guide plate 35. This double fixing method enhances the installation stability of the connecting pipe 45 and avoids vibration when the circulating liquid flows. The Venturi tube 43 is externally fixedly connected to the inside of the rotating cover 2 to ensure that the Venturi tube 43 moves synchronously with the rotating cover 2 and does not affect the sealing of the circulation channel. The docking assembly 42 includes a fixing pipe 422, which provides a fixed foundation for the docking structure and ensures the structural stability during the docking process.The fixed tube 422 is externally fixedly connected to the outside of the flow tube 41, forming an integrated structure with the flow tube 41 and improving the docking accuracy. A rotating cap 421 is threadedly connected to the outside of the fixed tube 422. The rotating cap 421 drives the follower tube 423 to move via threaded transmission, realizing the switching between docking and separation. The follower tube 423 is fixedly connected to the inside of the rotating cap 421. The follower tube 423 slides and cooperates with the fixed tube 422 to control the on / off state of the slide groove. A sliding block 424 is fixedly connected to the outside of the flow tube 41. The sliding block 424 cooperates with the slide groove to achieve precise sliding installation of the flow tube 41, while enhancing the structural stability after docking. The inside of the fixed tube 422... A density pad 425 is fixedly connected, and the density pad 425 fills the gaps through its own elastic deformation, enhancing the sealing effect between the flow pipe 41 and the fixed pipe 422. Sliding grooves are formed on the inner sides of the fixed pipe 422 and the follower pipe 423, providing a sliding path for the sliding block 424, ensuring smooth assembly and disassembly of the flow pipe 41. The outer side of the sliding block 424 is slidably connected to the inside of the sliding groove. This sliding fit ensures both ease of assembly and disassembly and restricts the displacement of the flow pipe 41 after docking. The outer side of the flow pipe 41 contacts the outer side of the density pad 425, ensuring a sealing effect. This contact method minimizes gaps and prevents leakage of circulating fluid or entry of external air into the flow pipe 41.

[0024] Reference Figures 6 to 8The sampling mechanism 5 includes a fixed box 51, which provides an installation and protective shell for the sampling component. The fixed box 51 is externally fixedly connected to the bottom side of the fermenter 1. A sliding box 52 is slidably connected inside the fixed box 51, allowing the sliding box 52 to slide flexibly between the fixed box 51 and the fermenter 1, thus enabling the extension and retraction of the sampling component. A collection box 53 is rotatably connected inside the sliding box 52, allowing the collection box 53 to open and close its slot by rotation, facilitating sample collection and sealed storage. A rotating handle 56 is rotatably connected to the outside of the fixed box 51, providing a manual operating component for the movement of the sliding box 52, facilitating operator control. A threaded connection is externally fixed to the rotating handle 56. Rod 55, a threaded rod 55, converts the rotational motion of handle 56 into the linear motion of connecting post 54 via threaded transmission. Connecting post 54 is externally threaded onto the threaded rod 55, transmitting the driving force of the threaded rod 55 to the sliding box 52, causing the sliding box 52 to extend and retract. Rotating post 58 is rotatably connected internally to handle 56, providing a carrier for the power transmission of handle 57 without affecting the independent operation of handle 56. Rotating post 57 is fixedly connected to one end of rotating post 58, providing a manual control component for the rotation of collection box 53. Rotating post 510 is slidably connected externally to rotating post 58. Column 2 510 can move synchronously with sliding box 52, and transmit the torque of rotating column 1 58 at the same time. The external fixed connection of rotating column 1 58 is fixed block 59, which is embedded in the groove of rotating column 2 510 to ensure the stability of power transmission between rotating column 1 58 and rotating column 2 510. The internal groove of rotating column 2 510 provides sliding space for fixed block 59, so that rotating column 2 510 can move with sliding box 52 without detaching from rotating column 1 58. The external openings of fixed box 51 and sliding box 52 are provided for collecting and displaying objects. The opening position and size of the opening match the movement trajectory of collection box 53 to ensure that the sample can enter collection box 53 smoothly. The collection box 53 has a collection cavity inside for storing objects. The collection cavity can seal and preserve the sample to prevent contamination during the retrieval process. The connecting post 54 is fixedly connected to the outside of the sliding box 52. This connection method ensures that the connecting post 54 can stably drive the sliding box 52 to slide and prevent it from falling off during the sliding process. The rotating post 510 is rotatably connected to the inside of the sliding box 52 to ensure the stability of the rotating post 510 when rotating, without affecting the movement of the sliding box 52. The end of the rotating post 510 away from the rotating post 58 is fixedly connected to the inside of the collection box 53, so that the rotating post 510 can directly drive the collection box 53 to rotate, ensuring the precise opening and closing of the slot.

[0025] Working principle: When using fermentation tank 1, fermented vegetables can be placed and removed by rotating the lid 2. After the fermented vegetables have been placed, the constant pressure cylinder 31 can be activated to move the transmission column 32 downward, thereby causing the extrusion plate 33, the lid 34, and the guide plate 35 to move downward until the extrusion plate 33 pushes the fermented vegetables, so that the fermented vegetables are below the liquid. At the same time, the lid 34 will adhere to the surface of the liquid. During the movement of the lid 34, the Y-shaped sealing ring 361 is set so that when the lid 34 is pressed down, the lip flips upward, allowing gas to escape. When external air wants to enter, the lip is pressed tightly against the tank wall by pressure, forming a seal. As the lid 34 descends, the Y-shaped sealing ring 361 automatically scrapes off the vegetable residue remaining on the tank wall, ensuring that the upper tank wall is clean. The escaped gas is blocked by the sealing ring 362 and is collected by the guide plate 35 and discharged from the one-way valve 37. The physical structure eliminates the presence of oxygen and avoids the generation of miscellaneous bacteria.

[0026] During fermentation, the external water pump of fermentation tank 1 can be activated to extract the fermentation liquid from inside fermentation tank 1. This liquid is then transported through the flow pipe 41, and via the Venturi tube 43 and corrugated pipe 44, it is injected into the interior of the pressure cap 34 through the connecting pipe 45. The liquid is then injected back into the tank through the nozzle at the bottom of the pressure cap 34, achieving circulation. This ensures uniform salinity and acidity between the upper and lower layers of the tank, avoiding damage to the vegetables caused by traditional stirring structures. The dripping brine continuously washes the top, preventing the growth of unwanted bacteria. The corrugated pipe 44 allows the anti-contamination mechanism 3 to adaptively expand and contract during adjustment, ensuring effective circulation under different liquid levels. Furthermore, the design of the docking component 42 allows for quick assembly and disassembly of the flow pipe 41. When disassembly is required, rotating the rotating cap 421 fixes the entire structure. As the outer part of tube 422 moves, the follower tube 423 moves with the rotating cap 421 until the follower tube 423 is connected to the groove inside the fixed tube 422. At this point, the flow tube 41 can be pulled out from the inside of the fixed tube 422, completing the quick disassembly between the two flow tubes 41. When reinstalling, it is necessary to ensure that the follower tube 423 is connected to the groove inside the fixed tube 422, and then slide the flow tube 41 into the inside of the follower tube 423 and the fixed tube 422. At this time, the sliding block 424 will slide inside the groove. When the outer part of the flow tube 41 is in contact with the density pad 425, the rotating cap 421 is rotated in the opposite direction, causing the follower tube 423 to slide continuously towards one end of the fixed tube 422 until the follower tube 423 is tightly attached to the outer part of the sliding block 424. At this time, the two grooves are not connected, achieving a quick sealing connection effect.

[0027] When it is necessary to check the fermentation status inside fermenter 1, sampling can be achieved through sampling mechanism 5. The operator can rotate handle 56 to make the connecting column 54 drive the sliding box 52 to slide inside the fixed box 51 until the sliding box 52 slides from the fixed box 51 into the fermenter 1. At this time, the operator can rotate handle 57 to make the rotating column 58 drive the rotating column 510 to rotate through the fixed block 59. Finally, the collection box 53 rotates inside the sliding box 52, so that the slot of the collection box 53 is exposed. At this time, the sample inside fermenter 1 will fall into the collection box 53. Then, rotate handle 57 in the opposite direction to make the collection box 53 rotate again, so that the slot is closed. The sample will be stored inside the collection box 53. Then, rotate handle 56 in the opposite direction to remove the sample from the inside of fermenter 1, achieving the effect of rapid sampling.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing contamination by probiotic-fermented vegetables, comprising a fermentation tank (1), characterized in that, The fermenter (1) is provided with a rotating cover (2) at the top, and a pollution prevention mechanism (3) is provided at the top of the rotating cover (2). A sampling mechanism (5) is provided on one side of the bottom of the fermenter (1). A circulation mechanism (4) is provided on the outside of the fermenter (1). The anti-pollution mechanism (3) includes a constant pressure cylinder (31), the bottom end of which is fixedly connected to the top end of the rotating cover (2), the drive end of which is fixedly connected to a transmission column (32), the bottom end of which is fixedly connected to a pressing plate (33), the outside of which is fixedly connected to a pressure cap (34), the outside of which is fixedly connected to a guide plate (35), the outside of which is fixedly connected to a sealing assembly (36) on the outside of the pressure cap (34) and the guide plate (35), and the top end of which is fixedly connected to a one-way valve (37).

2. The device for preventing contamination by other microorganisms in probiotic fermented vegetables according to claim 1, characterized in that, The sealing assembly (36) includes a Y-shaped sealing ring (361), the outside of which is fixedly connected to the inside of the gland (34), and the outside of the guide plate (35) is fixedly connected to a sealing sleeve (362).

3. The device for preventing contamination by other microorganisms in probiotic fermented vegetables according to claim 1, characterized in that, The guide plate (35) is a concave arc plate used to guide the gas, and the extrusion plate (33) has multiple unclog holes inside to facilitate the flow of liquid.

4. The device for preventing contamination by other microorganisms in probiotic fermented vegetables according to claim 1, characterized in that, The circulation mechanism (4) includes a flow pipe (41), which is fixedly connected to the outside of the fermenter (1). A docking assembly (42) is provided inside the flow pipe (41). One end of the flow pipe (41) is connected to the bottom of the fermenter (1) via a water pump. The other end of the flow pipe (41) is fixedly connected to a venturi tube (43). A corrugated pipe (44) is fixedly connected to the bottom of the venturi tube (43). A connecting pipe (45) is fixedly connected to the bottom of the corrugated pipe (44). A cavity (46) is opened inside the pressure cap (34).

5. The device for preventing contamination by other microorganisms in probiotic fermented vegetables according to claim 4, characterized in that, The external connection of the connecting tube (45) is fixedly connected to the inside of the pressure cap (34) and the guide plate (35), and the external connection of the venturi tube (43) is fixedly connected to the inside of the rotating cover (2).

6. The device for preventing contamination by other microorganisms in probiotic fermented vegetables according to claim 4, characterized in that, The docking assembly (42) includes a fixed tube (422), the outside of which is fixedly connected to the outside of the flow tube (41). A rotating cap (421) is threadedly connected to the outside of the fixed tube (422). A follower tube (423) is fixedly connected to the inside of the rotating cap (421). A sliding block (424) is fixedly connected to the outside of the flow tube (41). A density pad (425) is fixedly connected to the inside of the fixed tube (422).

7. The device for preventing contamination by other microorganisms in probiotic fermented vegetables according to claim 6, characterized in that, The fixed tube (422) and the follower tube (423) have sliding grooves on their inner sides. The outside of the sliding block (424) is slidably connected to the inside of the sliding groove. The outside of the flow tube (41) is in contact with the outside of the density pad (425), which ensures the sealing effect.

8. The device for preventing contamination by other microorganisms in probiotic fermented vegetables according to claim 1, characterized in that, The sampling mechanism (5) includes a fixed box (51), which is fixedly connected to the bottom side of the fermenter (1) on the outside. A sliding box (52) is slidably connected inside the fixed box (51). A collection box (53) is rotatably connected inside the sliding box (52). A rotating handle (56) is rotatably connected to the outside of the fixed box (51). A threaded rod (55) is fixedly connected to the outside of the rotating handle (56). A connecting column (54) is threadedly connected to the outside of the threaded rod (55). A rotating column (58) is rotatably connected inside the rotating handle (56). A rotating handle (57) is fixedly connected to one end of the rotating column (58). A rotating column (510) is slidably connected to the outside of the rotating column (58). A fixing block (59) is fixedly connected to the outside of the rotating column (58).

9. The device for preventing contamination by other microorganisms in probiotic fermented vegetables according to claim 8, characterized in that, The rotating column 2 (510) has a groove inside, and the fixed block (59) is slidably connected to the inside of the groove.

10. The device for preventing contamination by other microorganisms in probiotic fermented vegetables according to claim 8, characterized in that, The fixed box (51) and the sliding box (52) have slots on their exteriors for collecting and displaying objects. The collection box (53) has a collection cavity inside for storing objects. The connecting column (54) is fixedly connected to the exterior of the sliding box (52). The rotating column two (510) is rotatably connected to the interior of the sliding box (52). The end of the rotating column two (510) away from the rotating column one (58) is fixedly connected to the interior of the collection box (53).

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