Constant-temperature fermenter for yeast culture fermentation

Abstract

The utility model provides a constant temperature fermentor for yeast culture fermentation, which belongs to the technical field of yeast fermentation and comprises a fermentor, a tank cover arranged at the top of the fermentor, a material guide pipe arranged on one side of the fermentor, a material scraping plate arranged above the tank cover, and a telescopic part arranged on the side wall of the fermentor and used for adjusting the position of the material scraping plate. When yeast culture operation is carried out, the displacement assembly drives the material guiding pipe to move at a constant speed, materials are evenly put into the fermenter, after yeast culture is finished, the material scraping plate is moved into the fermenter through the telescopic piece and attached to the inner wall of the bottom, and then the swing arm piece drives the material scraping plate to swing in a reciprocating mode; and materials attached to the inner wall of the fermenter are scraped off, so that the cleanliness in the fermenter is ensured, the materials detained on the inner wall of the fermenter are avoided, the inner wall of the fermenter is prevented from being corroded and damaged, and the influence on subsequent use is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of yeast fermentation, in particular to a constant temperature fermenter used for yeast culture fermentation. Background Art

[0002] Yeast is a single-cell fungus, a tiny single-cell microorganism that is invisible to the naked eye. It can ferment sugar into alcohol and carbon dioxide. It is distributed throughout nature. It is a typical heterotrophic facultative anaerobic microorganism that can survive under both aerobic and anaerobic conditions. It is a natural fermentation agent. During the yeast culture process, it is usually cultured in a constant temperature tank;

[0003] A related art (publication number: CN213037771U) discloses a constant temperature fermenter for fermenting yeast culture, and the disclosed technical solution is: a hot air blower and two sets of air outlets are provided, and when the fermenter is used to ferment the yeast culture, the hot air blower is used to enable the two sets of air outlets to simultaneously inject hot air into different parts of the interior of the box, so that the internal temperature is more uniform, thereby achieving a better fermentation effect of the yeast culture, and a storage rack and a storage tank are provided. When the fermenter is used to ferment the yeast culture, the fermenter is placed in the storage tank on the upper side of the storage rack inside the box, so that the fermenter is stored in a limited position;

[0004] In the above disclosed technical solutions, it is found that the related technologies have the following problems: when feeding materials into the fermenter, if the materials are placed unevenly, the amount of materials at different positions will be different, which will affect the effect of yeast fermentation under constant temperature fermentation. In this regard, we propose a new constant temperature fermenter for yeast culture fermentation;

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background technology section of this application, and therefore may include prior art information that does not constitute known to ordinary technicians in the field. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology. In order to solve the problem of uniform feeding in the above-mentioned prior art, the utility model provides a constant temperature fermenter for yeast culture fermentation, which adopts a uniform feeding mechanism combined with a tank cleaning mechanism to achieve the effect of improving the operating efficiency. The specific technical solution is:

[0007] A constant temperature fermenter for yeast culture fermentation, comprising a fermenter, a trough cover is arranged on the top of the fermenter, a feed pipe is arranged on one side of the fermenter, a displacement component fixed to the edge of the top of the fermenter is arranged at the bottom of the feed pipe, a scraper plate is arranged above the trough cover, a swing arm member for swinging the scraper plate is arranged above the scraper plate, and a telescopic member for adjusting the position of the scraper plate is arranged on the side wall of the fermenter.

[0008] In the above technical solution, the displacement assembly includes a screw rotatably arranged on the side wall of the fermenter, the external thread of the screw is connected to a moving seat, and the feed pipe is rotatably arranged on the side wall of the moving seat.

[0009] The outside of the material introduction pipe is sleeved with a movable seat, the side wall of the movable seat is fixedly mounted with a connecting seat, and the connecting seat is rotatably connected to the movable seat.

[0010] The end of the feed introduction pipe away from the fermenter is fixedly connected with a soft connection pipe.

[0011] The swing arm member includes a support seat, a bracket is fixedly installed on one side of the support seat opposite to the scraper plate, a movable shaft is rotatably arranged inside the bracket, and the scraper plate is sleeved on the outside of the movable shaft, a swing frame is sleeved on the outside of the movable shaft, a sliding rod is embedded in the inside of the swing frame, a movable rod is fixedly installed on the outer wall of the sliding block, a driving shaft is rotatably arranged in the inner cavity of the support seat, a rotating member is sleeved on the outside of the driving shaft, and the other side of the rotating member is sleeved on the outside of the movable rod.

[0012] The telescopic member is fixedly mounted on the side wall of the fermenter, and the movable end of the telescopic member is fixedly connected to the support seat.

[0013] A discharge pipe is embedded in the bottom of the fermenter, and a valve is arranged on the discharge pipe.

[0014] A guide block is fixedly mounted on the side wall of the tank cover, a guide seat is fixedly mounted on the side wall of the fermenter, a guide groove is formed on the side wall of the guide seat, and the guide block corresponds to the guide groove.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the constant temperature fermenter for yeast culture fermentation:

[0016] 1. When feeding, the output shaft of the driving motor drives the lead screw to rotate, so that the moving seat connected to the external thread of the lead screw drives the feed pipe to move at a constant speed, and the raw materials are evenly fed into the fermenter, thereby ensuring a more even distribution of materials inside the fermenter, and thus ensuring the effect of yeast culture.

[0017] 2. After the yeast culture is completed, the scraper plate is driven to swing back and forth by the swing arm to scrape off the material attached to the inner wall of the fermenter, ensuring the cleanliness of the fermenter, thereby avoiding the material remaining on the inner wall of the fermenter, thereby preventing corrosion damage to the inner wall of the fermenter and affecting subsequent use.

[0018] 3. By adjusting the angle of the feed pipe, the stability of the material entering the fermenter is ensured, thereby preventing the material from spilling outside.

[0019] Fourth, by extending the soft connecting pipe, there is no need to use excessively long pipes during the feeding process, thus bringing convenience to the feeding process for relevant personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a constant temperature fermenter for yeast culture fermentation according to the utility model;

[0021] Figure 2 This is an exploded view of the structure of a constant temperature fermenter for yeast culture fermentation according to the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the scraper plate of the utility model;

[0023] Figure 4 for Figure 1 A local enlarged view of point A;

[0024] Figure 5 for Figure 2 A partial enlarged view of point B;

[0025] Figure 6 for Figure 3 A partial enlarged view of point C;

[0026] in, Figures 1 to 6 The correspondence between the reference numerals and the component names is: 1-fermenter, 2-tank cover, 3-support seat, 4-screw, 5-scraper, 6-discharge pipe, 7-feeding pipe, 8-bracket, 9-swing frame, 10-telescopic member, 11-movable seat, 12-flexible connecting pipe, 13-driving shaft, 14-connecting seat, 15-movable seat, 16-guide seat, 17-guide groove, 18-guide block, 19-valve, 20-rotating member, 21-slide rod, 22-connecting member, 23-movable rod, 24-sliding block, 25-movable shaft, 26-guide rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The following is a combination of specific implementation cases and attached Figure 1-6 The present invention is further described below, but the present invention is not limited to these embodiments.

[0029] A constant temperature fermenter for yeast culture fermentation, comprising a fermenter 1, with a tank cover 2 disposed on the top of the fermenter 1. A heating element is embedded and installed inside the side wall of the fermenter 1, and the heating element can be a heating rod or a heating wire. A controller is installed on the surface of the fermenter 1, and the controller is electrically connected to the heating element, and the temperature of the heating element is adjusted by the controller. To ensure that the inside of the fermenter 1 is in a constant temperature state, the tank cover 2 is slidably connected above the fermenter 1, and is opened and closed by sliding the tank cover 2 on the upper surface of the fermenter 1. A feed pipe 7 is disposed on one side of the fermenter 1, and a displacement component fixed to the top edge of the fermenter 1 is disposed at the bottom of the feed pipe 7, and a displacement component for moving the feed pipe 7 is disposed on the side wall of the fermenter 1. The feed pipe 7 is driven by the displacement component to move at a uniform speed on the side of the fermenter 1, so that the material is evenly fed into the fermenter 1.

[0030] A scraper plate 5 is arranged above the tank cover 2, and a swing arm member for swinging the scraper plate 5 is arranged above the scraper plate 5. A telescopic member 10 for adjusting the position of the scraper plate 5 is arranged on the side wall of the fermenter 1. The telescopic member 10 can be an electric telescopic rod or a cylinder. The swing arm member is driven by the telescopic member 10 to move in the vertical direction, so that the swing arm member drives the scraper plate 5 to be embedded in the fermenter 1 and fit on the bottom inner wall. Then, the scraper plate 5 is driven by the swing arm member to fit on the inner wall of the fermenter 1 and swing back and forth.

[0031] With the above structure, when the yeast is cultured, the feed pipe is connected to the feed pipe 7, and then the slot cover 2 is slid on the top of the fermenter 1 to open the fermenter 1. Then, the feed pipe 7 is driven to move at a constant speed by the displacement assembly, and the material is evenly fed into the fermenter 1. Then, the slot cover 2 is closed, and after the yeast culture is completed, the valve 19 is opened to discharge the material to the outside through the discharge pipe 6 at the bottom of the fermenter 1. After that, the scraper plate 5 is moved to the inside of the fermenter 1 by the telescopic member 10 and fits on the inner wall of the bottom, and then the scraper plate 5 is driven to swing back and forth by the swing arm member to scrape off the material attached to the inner wall of the fermenter 1. The cleanliness of the fermenter 1 is ensured, thereby avoiding the material being trapped on the inner wall of the fermenter 1, thereby preventing the inner wall of the fermenter 1 from being corroded and damaged, and preventing the subsequent use from being affected.

[0032] Wherein, the displacement assembly includes a lead screw 4 rotatably arranged on the side wall of the fermenter 1. Two mutually parallel mounting plates are vertically fixedly installed on the side wall of the fermenter 1, and the two mounting plates are respectively adjacent to the two sides of the fermenter 1. Bearings are embedded and installed on the opposite surfaces of the two mounting plates, and the two ends of the lead screw 4 are respectively embedded and installed inside the two bearings. The lead screw 4 is allowed to rotate between the two mounting plates, and the drive motor is fixed to the side wall of the fermenter 1 through the base. The output shaft of the drive motor passes through the interior of the corresponding mounting plate and is fixedly connected to one end of the lead screw 4, and the drive motor is electrically connected to the external power supply through a wire.

[0033] The external thread of the lead screw 4 is connected with the moving seat 11. The surface of the moving seat 11 is provided with a threaded through hole that penetrates the inner cavity, and the moving seat 11 is connected to the lead screw 4 through the threaded through hole, that is, the moving seat 11 moves horizontally by rotating the lead screw 4. A guide rod 26 parallel to the lead screw 4 is fixedly installed between the two mounting plates, and the moving seat 11 is movably sleeved on the outside of the guide rod 26. The guide rod 26 parallel to the lead screw 4 ensures the stability of the moving direction of the feed tube 7 driven by the moving seat 11. The feed tube 7 is rotatably arranged on the side wall of the moving seat 11. By rotating the feed tube 7, the discharge port of the feed tube 7 is rotated to the corresponding position in the fermenter 1.

[0034] With the above structure, when feeding, the feed pipe 7 is connected to the external feed pipe through a flange. Then the drive motor is connected to the power supply, so that the output shaft of the drive motor drives the lead screw 4 to rotate, so that the moving seat 11 connected to the external thread of the lead screw 4 drives the feed pipe 7 to move at a constant speed. The raw materials are evenly fed into the fermenter 1, thereby ensuring a more even distribution of the materials inside the fermenter 1, thereby ensuring the effect of yeast culture.

[0035] It is worth noting that the outside of the feed pipe 7 is sleeved with a movable seat 15, and the side wall of the movable seat 11 is fixedly installed with a connecting seat 14, and the connecting seat 14 is rotatably connected to the movable seat 15. A rotating shaft is embedded and installed inside the connecting seat 14, and the surface of the movable seat 15 is movably sleeved on the outside of the rotating shaft through the opening of the mounting hole, so that the movable seat 15 drives the feed pipe 7 to rotate around the rotating shaft inside the connecting seat 14. An external thread is provided on the outside of the connecting seat 14 extending from the rotating shaft, and the angle of the feed pipe 7 is locked by a nut and the external thread extending from the connecting seat 14 from the rotating shaft. By adjusting the angle of the feed pipe 7, the stability of the process of the material entering the fermenter 1 is ensured, thereby preventing the material from being spilled outside.

[0036] In addition, the end of the feed pipe 7 away from the fermenter 1 is fixedly connected with a flexible connecting pipe 12. One end of the flexible connecting pipe 12 is connected to the feed pipe, and the other end of the flexible connecting pipe 12 is sealed and connected to the feed pipe 7.

[0037] By adopting the above structure and extending the soft connecting pipe 12, it is not necessary to use excessively long pipes during the feeding process, thereby bringing convenience to the feeding process for relevant personnel.

[0038] In addition, the swing arm member includes a support seat 3, and a bracket 8 is fixedly installed on the side of the support seat 3 opposite to the scraper plate 5. Two brackets 8 are vertically fixed to the surface of the support seat 3 opposite to the scraper plate 5 in parallel with each other. Bearings are embedded and installed on the inner wall of the edge of the two brackets 8 on the opposite surface and close to the scraper plate 5, and the two ends of the movable shaft 25 are respectively embedded and installed inside the two bearings. A connector 22 is fixedly installed on the side of the scraper plate 5 close to the bracket 8, and the connector 22 is fixedly sleeved on the outside of the movable shaft 25 through a mounting hole opened on the surface and penetrating the inner cavity, so that the connector 22 drives the scraper plate 5 to rotate along with the movable shaft 2.

[0039] The bracket 8 is provided with a movable shaft 25 for internal rotation, and the scraper plate 5 is sleeved on the outside of the movable shaft 25, and the swing frame 9 is sleeved on the outside of the movable shaft 25, and the slide bar 21 is embedded and installed inside the swing frame 9. A mounting hole that penetrates the inner cavity is provided on the surface of the swing frame 9 close to one side, and one side of the swing frame 9 is fixedly sleeved on the outside of the movable shaft 25 through the mounting hole, so that the movable shaft 25 drives the swing frame 9 and the scraper plate 5 to rotate at the same time. A slide bar 21 parallel to the movable shaft 25 is fixedly installed inside the swing frame 9 away from the scraper plate 5, and a slider 24 is sleeved on the outside of the slider 21. The slider 24 is movably sleeved on the outside of the slider 21 through the through hole provided on the surface, so that the slider 24 slides on the outside of the slider 21 in close contact.

[0040] A movable rod 23 is fixedly installed on the outer wall of the slider 24, and a driving shaft 13 is rotatably arranged in the inner cavity of the support seat 3. A rotating member 20 is sleeved on the outside of the driving shaft 13, and the other side of the rotating member 20 is sleeved on the outside of the movable rod 23. A through hole penetrating the inner cavity is provided on the surface of the support seat 3 and at a position corresponding to the bracket 8, and a bearing is embedded and installed inside the through hole. The driving shaft 13 is embedded in the bearing and the two ends of the driving shaft 13 extend out of the two sides of the support seat 3 respectively. The driving motor is fixed on the surface of the support seat 3 through a base, and the output shaft of the driving motor is fixedly connected to the upper end of the driving shaft 13, and the driving motor is electrically connected to an external power supply through a wire.

[0041] One side of the rotating member 20 is fixedly sleeved on the outside of one end of the driving shaft 13 located below the support seat 3 through a mounting hole opened on the surface, so that the driving shaft 13 drives one side of the rotating member 20 to rotate. The other side of the rotating member 20 is movably sleeved on the outside of the movable rod 23 through a mounting hole opened on the surface, and the end of the movable rod 23 extending outside the rotating member 20 is fixedly installed with a stop block.

[0042] With the above structure, when the inner wall of the fermenter 1 is scraped and cleaned, the scraper plate 5 is embedded into the fermenter 1 and fits on the inner wall at the bottom. Then the drive motor is connected to the power supply, so that the output shaft of the drive motor drives the drive shaft 13 to rotate, so that the drive shaft 13 drives one side of the rotating member 20 to rotate, so that the other side of the rotating member 20 fits on the outside of the movable rod 23 to slide up and down, so that the movable rod 23 drives the slider 24 to fit on the outside of the slide bar 21 to slide left and right. The slide bar 21 drives the swing frame 9 to swing back and forth, so that the swing frame 9 drives the movable shaft 25 to swing outside, so that the movable shaft 25 drives the scraper plate 5 to fit on the inner wall of the fermenter 1 through the connecting member 22 to swing back and forth. In this way, the material attached to the inner wall of the fermenter 1 is scraped off, and then the valve 19 is opened to discharge the material to the outside through the discharge pipe 6, so that the inner wall of the fermenter 1 is cleaned more thoroughly, and the retained material is prevented from causing corrosion damage to the fermenter 1, thereby achieving a protective effect.

[0043] Furthermore, the telescopic member 10 is fixedly mounted on the side wall of the fermenter 1, and the movable end of the telescopic member 10 is fixedly connected to the support base 3. The movable end of the telescopic member 10 drives the support base 3 to move, so that the support base 3 drives the scraper plate 5 to move to the bottom of the inner wall of the fermenter 1, ensuring the fit between the scraper plate 5 and the inner wall of the fermenter 1, thereby ensuring the effect of scraping off the material.

[0044] A discharge pipe 6 is embedded in the bottom of the fermenter 1, and a valve 19 is provided on the discharge pipe 6. The discharge pipe 6 is fixedly embedded in the bottom of the fermenter 1, so that the discharge pipe 6 is connected to the inside of the fermenter 1, and the opening and closing of the discharge pipe 6 is adjusted by controlling the valve 19, so that the operation process is more convenient.

[0045] A guide block 18 is fixedly mounted on the side wall of the tank cover 2, and a guide seat 16 is fixedly mounted on the side wall of the fermenter 1. A guide groove 17 is formed on the side wall of the guide seat 16, and the guide block 18 corresponds to the guide groove 17. When the tank cover 2 is opened and closed, the tank cover 2 drives the guide block 18 to slide into the guide groove 17, and then the position of the tank cover 2 is fixed by bolts.

[0046] The present embodiment is a constant temperature fermenter for yeast culture fermentation, and the working principle is as follows: when the yeast is cultured, one end of the flexible connecting tube 12 is connected to the feed tube, and the other end of the flexible connecting tube 12 is sealed and connected to the feed pipe 7. Then the slot cover 2 is slid on the top of the fermenter 1, the fermenter 1 is opened, and then the drive motor is connected to the power supply, so that the output shaft of the drive motor drives the lead screw 4 to rotate, so that the moving seat 11 connected to the external thread of the lead screw 4 drives the feed pipe 7 to move at a constant speed, and the raw materials are uniformly put into the fermenter 1. Then the slot cover 2 is closed, and after the culture, the valve 19 is opened to discharge the raw materials to the outside through the discharge pipe 6 at the bottom of the fermenter 1. Then, the scraper plate 5 is moved to the inside of the fermenter 1 and attached to the bottom inner wall through the telescopic member 10, and then the driving motor is connected to the power supply, so that the output shaft of the driving motor drives the driving shaft 13 to rotate, so that the driving shaft 13 drives one side of the rotating member 20 to rotate, so that the other side of the rotating member 20 is attached to the outside of the movable rod 23 to slide up and down, so that the movable rod 23 drives the slider 24 to slide left and right on the outside of the slide bar 21. The slide bar 21 drives the swing frame 9 to swing back and forth, so that the swing frame 9 drives the movable shaft 25 to swing outside, so that the movable shaft 25 drives the scraper plate 5 to swing back and forth on the inner wall of the fermenter 1 through the connecting member 22, so as to scrape off the material attached to the inner wall of the fermenter 1, and then open the valve 19 to discharge it to the outside through the discharge pipe 6.

[0047] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0049] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A constant temperature fermenter for yeast culture fermentation, comprising a fermenter (1), wherein a tank cover (2) is arranged on the top of the fermenter (1), characterized in that: A feed pipe (7) is provided on one side of the fermenter (1), a displacement assembly fixed to the top edge of the fermenter (1) is provided at the bottom of the feed pipe (7), a scraper plate (5) is provided above the tank cover (2), a swing arm member for swinging the scraper plate (5) is provided above the scraper plate (5), and a telescopic member (10) for adjusting the position of the scraper plate (5) is provided on the side wall of the fermenter (1).

2. A constant temperature fermenter for yeast culture fermentation according to claim 1, characterized in that: The displacement assembly comprises a lead screw (4) rotatably arranged on the side wall of the fermenter (1), the external thread of the lead screw (4) is connected to a movable seat (11), and the feed guide tube (7) is rotatably arranged on the side wall of the movable seat (11).

3. A constant temperature fermenter for yeast culture fermentation according to claim 2, characterized in that: The outside of the feed pipe (7) is sleeved with a movable seat (15), and the side wall of the movable seat (11) is fixedly mounted with a connecting seat (14), and the connecting seat (14) is rotatably connected to the movable seat (15).

4. A constant temperature fermenter for yeast culture fermentation according to claim 2, characterized in that: The end of the feed introduction pipe (7) away from the fermenter (1) is fixedly connected with a flexible connection pipe (12).

5. A constant temperature fermenter for yeast culture fermentation according to claim 1, characterized in that: The swing arm member comprises a support seat (3), a bracket (8) is fixedly installed on one side of the support seat (3) relative to the scraper plate (5), a movable shaft (25) is rotatably arranged inside the bracket (8), and the scraper plate (5) is sleeved on the outside of the movable shaft (25), a swing frame (9) is sleeved on the outside of the movable shaft (25), a sliding rod (21) is embedded and installed inside the swing frame (9), a slider (24) is sleeved on the outside of the sliding rod (21), a movable rod (23) is fixedly installed on the outer wall of the slider (24), a driving shaft (13) is rotatably arranged in the inner cavity of the support seat (3), a rotating member (20) is sleeved on the outside of the driving shaft (13), and the other side of the rotating member (20) is sleeved on the outside of the movable rod (23).

6. A constant temperature fermenter for yeast culture fermentation according to claim 5, characterized in that: The telescopic member (10) is fixedly mounted on the side wall of the fermenter (1), and the movable end of the telescopic member (10) is fixedly connected to the support seat (3).

7. A constant temperature fermenter for yeast culture fermentation according to claim 1, characterized in that: A discharge pipe (6) is embedded in the bottom of the fermenter (1), and a valve (19) is provided on the discharge pipe (6).

8. A constant temperature fermenter for yeast culture fermentation according to claim 1, characterized in that: A guide block (18) is fixedly mounted on the side wall of the tank cover (2), a guide seat (16) is fixedly mounted on the side wall of the fermenter (1), a guide groove (17) is formed on the side wall of the guide seat (16), and the guide block (18) corresponds to the guide groove (17).

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