A fermentation device for food processing

Abstract

The invention relates to a fermentation device for food processing in the field of fermentation equipment. The device is provided with a sliding column and connected to a stirring rod, and a plug-in shaft plugged and matched therewith. Under the guidance of a circumferential wave groove on the inner wall of the fermentation cylinder, the stirring rod makes a compound motion of a circumferential wave trajectory, so that the stirring rod is in full contact with food base materials at various positions in the fermentation cylinder, so that the base materials are stirred more fully. At the same time, through a spray hole arranged on the surface of the stirring rod and a piston disk arranged in a suction chamber and connected to the plug-in shaft, when the rotating cylinder makes a circumferential wave trajectory motion, the fermented bacterial liquid in a bacterial liquid bucket connected to the plug-in shaft is injected into the stirring rod and sprayed out, so that the fermented bacterial liquid is evenly sprayed into the base materials at various positions, so that the dispersion of the fermented bacterial liquid is more uniform, the fermentation quality is improved, and the stirring time is reduced.

Description

Technical Field

[0001] The present invention relates to the field of food fermentation equipment, and more specifically, to a fermentation device for food processing. Background Art

[0002] Food fermentation tanks are important industrial devices used for microbial fermentation. Their structures usually include stirring devices, baffles, and heat exchange devices. The stirring device generates axial and radial flows through mechanical stirring to fully mix the materials in the tank and keep the solids in the liquid in a suspended state, which is beneficial to the absorption of nutrients. The baffle changes the direction of the liquid flow and enhances the dissolved oxygen effect. The heat exchange device, such as the jacket type, is used to adjust the fermentation temperature.

[0003] The stirring device of the existing fermentation tank has a single structure, and generally adopts a stirring shaft and a fixed stirring plate for stirring, which cannot fully mix the food base material and the fermentation bacteria liquid, the stirring mixing time is long, and the mixing uniformity is average. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a fermentation device for food processing, which can achieve sufficient and efficient dispersion of fermentation bacteria liquid in food base materials.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A fermentation device for food processing comprises a fermentation cylinder; a stirring rod is installed in the fermentation cylinder, the stirring rod is connected to a rotating cylinder rotatably nested in the fermentation cylinder, a plug-in shaft vertically slidably connected to the rotating cylinder is plugged in the center of the rotating cylinder, the plug-in shaft extends to the top of the fermentation cylinder and is connected to a driving motor through a transmission gear set, the driving motor drives the plug-in shaft to rotate through the transmission gear set, and the plug-in shaft drives the rotating cylinder to rotate in a circle; a sliding column is fixedly connected to the outer wall of the rotating cylinder, and a wave groove distributed in a circle is opened on the inner wall of the fermentation cylinder, and the sliding column is nested in the wave groove;

[0007] A suction chamber is provided at the central axis position of the rotating cylinder, a piston disk nested in the suction chamber is provided at the lower end of the plug-in shaft, a hollow chamber connected to the suction chamber is provided on the plug-in shaft, a first one-way valve is installed at the connection between the hollow chamber and the suction chamber, and a bacteria liquid bucket is connected at the upper end of the hollow chamber through a first rotating joint; the stirring rod is a hollow rod and has evenly distributed spray holes on its surface, the stirring rod is connected to the suction chamber of the rotating cylinder through the mounting cylinder, and a second one-way valve is installed at the connection between the mounting cylinder and the suction chamber.

[0008] As a further solution of the present invention, a stirring plate is passed through the stirring rod, the stirring rod extends into the mounting barrel and is rotatably connected thereto, and a hydraulic impeller is fixedly connected to the end of the stirring rod located at the mounting barrel.

[0009] As a further solution of the present invention, the suction chamber is connected to an air intake channel opened in the side wall of the rotating cylinder, and a third one-way valve is installed at the connection between the air intake channel and the suction chamber. The upper end of the air intake channel extends to the upper end surface of the rotating cylinder and is connected to a second rotating joint. The second rotating joint is connected to a gas storage tank installed on the fermentation cylinder through an air intake pipe, and oxygen is stored in the gas storage tank.

[0010] As a further solution of the present invention, the wave trough includes a plurality of wave trough units which are surrounded in a circle and projected in a sinusoidal shape, the number of the wave trough units is at least two, and the sliding column is hemispherical.

[0011] As a further solution of the present invention, the plug-in shaft is a prismatic shaft, the rotating cylinder is a truncated cone cylinder structure, a prismatic hole is provided at the upper end of the rotating cylinder which cooperates with it and is connected to the suction chamber, the piston disk below it is disc-shaped, and the circumferential side wall of the piston disk is embedded with a first sealing ring which abuts against the inner wall of the suction chamber.

[0012] As a further solution of the present invention, a feeding pipe connected to the inner cavity of the fermentation cylinder is provided on the side wall of the fermentation cylinder, a discharge pipe is connected to the lower part of the fermentation cylinder, and the bacterial liquid hopper is fixedly connected to the fermentation cylinder through a support rod.

[0013] As a further solution of the present invention, the stirring rod is a horizontally arranged circular tubular structure, the mounting tube is a horizontally arranged cylindrical structure, and a connecting hole connected to the inner cavity of the mounting tube is provided on the side of the stirring rod facing the mounting tube; a first fan-shaped plate and a second fan-shaped plate are provided on both sides of the hydraulic impeller in the mounting tube, which are abutted against the hydraulic impeller and are centrally symmetrical, and the first fan-shaped plate and the second fan-shaped plate are provided with flow grooves which are centrally symmetrical.

[0014] As a further solution of the present invention, the second rotating joint is an annular rotating joint, which includes an annular groove fixedly connected to the upper end surface of the rotating cylinder, and an annular cover rotatably connected to the annular groove and connected to the air inlet pipe; a second sealing ring that abuts against the inner wall of the fermentation cylinder is nested in the lower side wall of the rotating cylinder.

[0015] As a further solution of the present invention, a first solenoid valve is provided at the lower end of the bacteria liquid hopper, and a second solenoid valve is provided on the side of the air inlet pipe close to the air storage tank. Both the first solenoid valve and the second solenoid valve are electrically connected to the controller.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) The present invention provides a rotating cylinder with a sliding column and connected to a stirring rod, and a plug-in shaft plugged in and matched with the rotating cylinder. Under the guidance of the circumferential wave groove on the inner wall of the fermentation cylinder, the stirring rod makes a compound motion in a circular wave trajectory, so that the stirring rod is in full contact with the food base material at various positions in the fermentation cylinder, so that the base material is stirred more fully; at the same time, through the spray hole arranged on the surface of the stirring rod and the piston disk arranged in the suction chamber and connected to the plug-in shaft, while the rotating cylinder makes a circular wave trajectory motion, the fermented bacterial liquid in the bacterial liquid bucket connected to the plug-in shaft is injected into the stirring rod and sprayed out, so that the fermented bacterial liquid is evenly sprayed into the base material at various positions, so that the fermented bacterial liquid is more evenly dispersed, the fermentation quality is improved, and the stirring time is reduced.

[0018] (2) The present invention is provided with an air inlet channel connected to the suction chamber of the rotary drum and an air storage tank, so that oxygen is injected into the food base through a stirring rod that performs a circular wave compound motion, so that oxygen is fully in contact with the fermentation bacteria at various positions, thereby improving the uniformity of oxygen supply during aerobic fermentation and improving the fermentation quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the fermentation cylinder in the present invention;

[0021] Figure 3 It is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 4 It is a schematic diagram of the assembly structure of the rotating cylinder and the plug-in shaft in the present invention;

[0023] Figure 5 It is a schematic cross-sectional view of the rotating cylinder in the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the wave tank in the present invention;

[0025] Figure 7 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the stirring rod in the present invention;

[0027] Fig. 9 It is a schematic diagram of the assembly structure of the stirring rod in the present invention;

[0028] Fig.10 It is a schematic diagram of the flow of the fermentation liquid in the installation cylinder in the present invention;

[0029] Fig.11 for Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0030] Explanation of the numbers in the figure: 1. fermentation cylinder; 101. wave trough; 2. stirring rod; 201. connecting hole; 202. spray hole; 203. stirring plate; 3. rotating cylinder; 301. suction chamber; 302. air inlet channel; 303. prismatic hole; 4. plug-in shaft; 401. piston disk; 402. first sealing ring; 5. transmission gear set; 6. driving motor; 7. sliding column; 8. feeding pipe; 9. bacteria liquid bucket; 10. first solenoid valve; 11. first non-return valve; 12. installation cylinder; 1201. first fan-shaped plate; 1202. second fan-shaped plate; 13. second non-return valve; 14. hydraulic impeller; 15. third non-return valve; 16. second rotary joint; 17. air inlet pipe; 18. air storage tank; 19. second solenoid valve; 20. second sealing ring; 21. discharge pipe. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] See also Figure 1-Figure 10In one embodiment of the present invention, a fermentation device for food processing includes a fermentation cylinder 1; a stirring rod 2 is installed in the fermentation cylinder 1, and the stirring rod 2 is connected to a rotating cylinder 3 rotatably nested in the fermentation cylinder 1, and a plug-in shaft 4 vertically slidably connected to the rotating cylinder 3 is inserted at the center position of the rotating cylinder 3, and the plug-in shaft 4 extends to the top of the fermentation cylinder 1 and is connected to a driving motor 6 through a transmission gear set 5, and the driving motor 6 drives the plug-in shaft 4 to rotate through the transmission gear set 5, and the plug-in shaft 4 drives the rotating cylinder 3 to rotate in a circle; a sliding column 7 is fixedly connected to the outer wall of the rotating cylinder 3, and a wave groove 101 distributed in a circle is opened on the inner wall of the fermentation cylinder 1, and the sliding column 7 is nested in the wave groove 101. When the rotating cylinder 3 rotates, the sliding column 7 moves along a wave line trajectory in the wave groove 101, and the sliding column 7 drives the rotating cylinder 3 to move along a circumferential wave line trajectory, thereby driving the stirring rod 2 to move along a circumferential wave trajectory in the base material;

[0035] A suction chamber 301 is provided at the central axis position of the rotating cylinder 3, a piston disk 401 nested in the suction chamber 301 is provided at the lower end of the plug-in shaft 4, the plug-in shaft 4 is provided with a hollow cavity connected to the suction chamber 301, a first one-way valve 11 is installed at the connection between the hollow cavity and the suction chamber 301, and a bacteria liquid bucket 9 is connected to the upper end of the hollow cavity through a first rotating joint; the stirring rod 2 is a hollow rod and a uniformly distributed spray hole 202 is provided on the surface, the stirring rod 2 is connected to the suction chamber 301 of the rotating cylinder 3 through the mounting cylinder 12, and a second one-way valve 13 is installed at the connection between the mounting cylinder 12 and the suction chamber 301.

[0036] Specifically, when performing food fermentation, firstly, the food base material is put into the fermentation cylinder 1, and then the fermentation bacterial liquid is put into the bacterial liquid bucket 9, and then the driving motor 6 is started, and the stirring rod 2 makes a circular wave motion in the base material, so that the stirring rod 2 fully contacts and stirs the base material at various positions in the fermentation cylinder 1, and at the same time, when the rotating cylinder 3 makes a circular wave motion, the rotating cylinder 3 moves up and down. When the rotating cylinder 3 moves downward, the rotating cylinder 3 and the piston disk 401 move away from each other, and negative pressure is generated in the suction chamber 301. The suction chamber 301 is connected to the plug shaft. The fermented bacterial liquid is extracted from the bacterial liquid hopper 9. When the rotating cylinder 3 moves upward, the rotating cylinder 3 and the piston plate 401 approach each other, and the fermented bacterial liquid in the suction chamber 301 is squeezed. The squeezed fermented bacterial liquid enters the stirring rod 2 from the suction chamber 301 through the mounting cylinder 12 and is sprayed out from the spray hole 202, so that the stirring rod 2 sprays the fermented bacterial liquid while performing circular wave stirring, so that the fermented bacterial liquid is fully in contact with the food base material at various positions, thereby improving the dispersion uniformity and dispersion efficiency of the fermented bacterial liquid, so that the food raw materials are fully fermented, and the quality of the fermented food is improved.

[0037] Compared with the traditional food fermentation equipment, the present invention is provided with a sliding column 7 and a rotating cylinder 3 connected with a stirring rod 2 and a plug-in shaft 4 plugged in and matched therewith. Under the guidance of the circumferential wave groove 101 on the inner wall of the fermentation cylinder 1, the stirring rod 2 makes a compound movement of a circular wave trajectory, so that the stirring rod 2 is in full contact with the food base material at various positions in the fermentation cylinder 1, so that the base material is stirred more fully; at the same time, through the spray hole 202 arranged on the surface of the stirring rod 2 and the piston disk 401 arranged in the suction chamber 301 and connected to the plug-in shaft 4, while the rotating cylinder 3 makes a circular wave trajectory movement, the fermented bacteria liquid in the bacteria liquid bucket 9 connected to the plug-in shaft 4 is injected into the stirring rod 2 and sprayed out, so that the fermented bacteria liquid is evenly sprayed into the base material at various positions, so that the dispersion of the fermented bacteria liquid is more uniform, the fermentation quality is improved, and the stirring time is reduced.

[0038] See also Figure 6 The wave groove 101 includes a plurality of wave groove units which are surrounded in a circle and projected in a sinusoidal shape. The number of the wave groove units is at least two, and the sliding column 7 is hemispherical.

[0039] Specifically, the more wave groove units are provided on the inner wall of the fermentation cylinder 1, the more times the stirring rod 2 moves up and down in a circular motion cycle, and the more fully the food base is stirred.

[0040] See also Figure 4 The plug-in shaft 4 is a prismatic shaft, and the rotating cylinder 3 is a truncated cone cylinder structure. A prismatic hole 303 is provided at the upper end of the rotating cylinder 3 to cooperate with it and communicate with the suction chamber 301. The piston disk 401 below it is disc-shaped, and the circumferential side wall of the piston disk 401 is embedded with a first sealing ring 402 that abuts against the inner wall of the suction chamber 301.

[0041] Specifically, when the plug-in shaft 4 rotates, the rotating cylinder 3 is driven to rotate, and the rotating cylinder 3 moves up and down along the plug-in shaft 4, which has good stability.

[0042] See also Figure 3 A feeding pipe 8 communicating with the inner cavity of the fermentation cylinder 1 is provided on the side wall of the fermentation cylinder 1, a discharge pipe 21 is connected to the lower part of the fermentation cylinder 1, and a bacterial liquid hopper 9 is fixedly connected to the fermentation cylinder 1 through a support rod.

[0043] Specifically, the food base material is fed in through the feeding pipe 8 , and discharged through the discharging pipe 21 .

[0044] See also Figure 7-9 A stirring plate 203 runs through the stirring rod 2, and the stirring rod 2 extends into the mounting tube 12 and is rotatably connected thereto. The end of the stirring rod 2 located at the mounting tube 12 is fixedly connected to a hydraulic impeller 14.

[0045] Specifically, the fermentation liquid squeezed out from the suction chamber 301 enters the installation cylinder 12 through the second one-way valve 13 and drives the hydraulic impeller 14 to rotate. The hydraulic impeller 14 drives the stirring rod 2 to rotate. The stirring rod 2 rotates while performing circular wave motion, thereby driving the stirring plate 203 to rotate, locally stirring the portion through which the stirring rod 2 passes, and further improving the mixing effect of the base material and the fermentation liquid.

[0046] See also Figure 7 and Fig. 9 The stirring rod 2 is a horizontally arranged circular tubular structure, the mounting cylinder 12 is a horizontally arranged cylindrical structure, and the stirring rod 2 is provided with a connecting hole 201 connected to the inner cavity of the mounting cylinder 12 on the side facing the mounting cylinder 12; the mounting cylinder 12 is provided with a first fan-shaped plate 1201 and a second fan-shaped plate 1202 which are in contact with the hydraulic impeller 14 and are centrally symmetrical on both sides of the hydraulic impeller 14, and the first fan-shaped plate 1201 and the second fan-shaped plate 1202 are provided with centrally symmetrical flow grooves.

[0047] Specifically, the fermented bacteria liquid is made to flow obliquely when passing through the hydraulic impeller 14 , thereby improving the rotation effect of the fermented bacteria liquid driving the hydraulic impeller 14 to rotate.

[0048] In another embodiment of the present invention, see Figure 3 , Figure 5 , Figure 7 , Fig.10 and Fig.11 The suction chamber 301 is connected to an air intake channel 302 opened in the side wall of the rotating cylinder 3, and a third one-way valve 15 is installed at the connection between the air intake channel 302 and the suction chamber 301. The upper end of the air intake channel 302 extends to the upper end surface of the rotating cylinder 3 and is connected to a second rotating joint 16. The second rotating joint 16 is connected to a gas storage tank 18 installed on the fermentation cylinder 1 through an air intake pipe 17, and oxygen is stored in the gas storage tank 18.

[0049] Specifically, during aerobic fermentation, oxygen in the gas storage tank 18 is extracted through the suction chamber 301 and injected into the stirring rod 2 for oxygen filling. The stirring rod 2 brings oxygen to various positions of the base material to achieve uniform diffusion of oxygen.

[0050] See also Fig.11 The second rotary joint 16 is an annular rotary joint, which includes an annular groove fixedly connected to the upper end surface of the rotating cylinder 3, and an annular cover rotatably connected to the annular groove and connected to the air inlet pipe 17; the lower side wall of the rotating cylinder 3 is embedded with a second sealing ring 20 that abuts against the inner wall of the fermentation cylinder 1.

[0051] Specifically, when the rotating cylinder 3 moves upward, the oxygen in the suction chamber 301 is squeezed out to the stirring rod 2 and sprayed out from the spray hole 202. At this time, the distance between the rotating cylinder 3 and the upper end surface of the base material gradually increases, that is, the rotating cylinder 3 and the fermentation cylinder 1 form a piston cylinder, thereby reducing the pressure above the base material, making it easier for the oxygen sprayed into the base material to move upward, realizing the vertical diffusion of oxygen, and further improving the oxygen diffusion speed and diffusion uniformity.

[0052] See also Figure 3 A first solenoid valve 10 is disposed at the lower end of the bacteria liquid hopper 9, and a second solenoid valve 19 is disposed on the side of the air inlet pipe 17 close to the air storage tank 18. Both the first solenoid valve 10 and the second solenoid valve 19 are electrically connected to the controller.

[0053] Specifically, the injection amounts of the fermentation liquid and oxygen injected separately can be conveniently controlled as needed. At the same time, the first solenoid valve 10 and the second solenoid valve 19 can be opened at the same time, so that the oxygen and the fermentation liquid are premixed in the suction chamber 301, thereby increasing the injection pressure of the fermentation liquid, increasing the diffusion distance of the injected fermentation liquid in the base material, and further improving the dispersion effect.

[0054] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fermentation device for food processing, characterized in that: The fermentation cylinder (1) comprises a fermentation cylinder (1); a stirring rod (2) is installed in the fermentation cylinder (1); the stirring rod (2) is connected to a rotating cylinder (3) which is rotatably nested in the fermentation cylinder (1); a plug-in shaft (4) which is vertically slidably connected to the rotating cylinder (3) is plugged into the center of the rotating cylinder (3); the plug-in shaft (4) extends to the top of the fermentation cylinder (1) and is connected to a driving motor (6) through a transmission gear set (5); the driving motor (6) drives the plug-in shaft (4) to rotate through the transmission gear set (5); the plug-in shaft (4) drives the rotating cylinder (3) to rotate in a circle; a sliding column (7) is fixedly connected to the outer wall of the rotating cylinder (3); a wave groove (101) distributed in a circle is opened on the inner wall of the fermentation cylinder (1); the sliding column (7) is nested in the wave groove (101); The central axis of the rotating cylinder (3) is provided with a suction chamber (301); the lower end of the plug-in shaft (4) is provided with a piston disc (401) nested in the suction chamber (301); the plug-in shaft (4) is provided with a hollow chamber connected to the suction chamber (301); a first non-return valve (11) is installed at the connection between the hollow chamber and the suction chamber (301); the upper end of the hollow chamber is connected to the bacterial liquid bucket (9) via a first rotating joint; the stirring rod (2) is a hollow rod and has a uniform surface. The stirring rod (2) is connected to the suction chamber (301) of the rotating cylinder (3) through the mounting cylinder (12); a second one-way valve (13) is installed at the connection point between the mounting cylinder (12) and the suction chamber (301); a stirring plate (203) runs through the stirring rod (2); the stirring rod (2) extends into the mounting cylinder (12) and is rotatably connected thereto; a hydraulic impeller (14) is fixedly connected to the end of the stirring rod (2) located in the mounting cylinder (12) The plug-in shaft (4) is a prismatic shaft, the rotating cylinder (3) is a truncated cone-shaped structure, the upper end of the rotating cylinder (3) is provided with a prismatic hole (303) which cooperates with the rotating cylinder (3) and is connected with the suction chamber (301), the piston disc (401) below it is disc-shaped, and the circumferential side wall of the piston disc (401) is embedded with a first sealing ring (402) which abuts against the inner wall of the suction chamber (301); the stirring rod (2) is a horizontally arranged circular tubular structure, and the mounting cylinder (12) is a horizontally arranged The invention relates to a cylindrical structure, and a connecting hole (201) communicating with the inner cavity of the mounting cylinder (12) is provided on the side of the stirring rod (2) facing the mounting cylinder (12); a first sector plate (1201) and a second sector plate (1202) are provided on both sides of the hydraulic impeller (14) in the mounting cylinder (12), and are in contact with the hydraulic impeller (14) and are centrally symmetrical; and the first sector plate (1201) and the second sector plate (1202) are provided with flow grooves that are centrally symmetrical.

2. A food processing fermentation device according to claim 1, characterized in that: The suction chamber (301) is connected to an air intake channel (302) provided in the side wall of the rotating cylinder (3); a third one-way valve (15) is installed at the connection point between the air intake channel (302) and the suction chamber (301); the upper end of the air intake channel (302) extends to the upper end surface of the rotating cylinder (3) and is connected to a second rotating joint (16); the second rotating joint (16) is connected to an air storage tank (18) installed on the fermentation cylinder (1) through an air intake pipe (17); oxygen is stored in the air storage tank (18).

3. A food processing fermentation device according to claim 1, characterized in that: The wave trough (101) comprises a plurality of wave trough units which are surrounded in a circle and projected in a sinusoidal shape, the number of the wave trough units is at least two, and the sliding column (7) is hemispherical.

4. A food processing fermentation device according to claim 1, characterized in that: The side wall of the fermentation cylinder (1) is provided with a feeding pipe (8) connected to the inner cavity of the fermentation cylinder (1), the lower part of the fermentation cylinder (1) is connected to a discharge pipe (21), and the bacterial liquid hopper (9) is fixedly connected to the fermentation cylinder (1) via a support rod.

5. A food processing fermentation device according to claim 2, characterized in that: The second rotary joint (16) is an annular rotary joint, comprising an annular groove fixedly connected to the upper end surface of the rotating cylinder (3), and an annular cover rotatably connected to the annular groove and connected to the air inlet pipe (17); a second sealing ring (20) is embedded in the lower side wall of the rotating cylinder (3) and abuts against the inner wall of the fermentation cylinder (1).

6. A food processing fermentation device according to claim 2, characterized in that: A first solenoid valve (10) is provided at the lower end of the bacterial liquid hopper (9), and a second solenoid valve (19) is provided on the side of the air inlet pipe (17) close to the air storage tank (18). Both the first solenoid valve (10) and the second solenoid valve (19) are electrically connected to the controller.

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