Soybean fermentation device for soy sauce production

Abstract

The invention provides a soybean fermentation device for soy sauce production, and relates to the technical field of soybean ferment.The soybean fermentation device comprises a fermentation tank body and a middle feeding sealing assembly, a tank body top cover is arranged at the upper end of the fermentation tank body, a mixing motor is fixedly installed at the upper end of the tank body top cover, and the middle feeding sealing assembly is fixedly installed at the upper end of the tank body top cover; a plurality of circulating stirring assemblies are fixedly mounted on the inner wall of the fermentation tank body; fermentation koji and zymophyte are added into a fermentation tank body through a feeding tank opening, then a top cover of the tank body is sealed, saline water is added into the tank body through a middle feeding sealing assembly and a middle feeding pipe according to time, and then a mixing motor is started to drive a motor output extension shaft and an auger middle shaft at the lower end; therefore, materials in the center can be lifted and stirred through rotation of the auger blades, the circulating stirring assembly is driven to lift and stir materials on the edge, and the fermented materials are kept clean.

Description

Technical Field

[0001] The invention relates to the technical field of soybean fermentation, in particular to a soybean fermentation device for soy sauce production. Background Art

[0002] Brewed soy sauce refers to a liquid condiment with special color, aroma and taste made from soybeans and defatted soybeans, wheat and bran through microbial fermentation. It is divided into two categories according to the fermentation process, namely high-salt dilute fermented soy sauce and low-salt solid fermented soy sauce. High-salt dilute fermented soy sauce is made from soybeans and defatted soybeans, wheat and wheat flour. After being steamed and koji-made with Aspergillus, it is mixed with brine to form a dilute mash, and then fermented by microorganisms to make soy sauce. During the fermentation process of mixed brine, if it is not stirred for a long time, white bubbles will appear on the surface. Once white hair grows, the whole can of fermented product will be scrapped. The fermented product itself cannot be exposed to air for a long time and must be kept warm, which hinders the production process of soy sauce. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a soybean fermentation device for soy sauce production, which solves the problems raised in the background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A soybean fermentation device for soy sauce production, comprising a fermentation tank body and an intermediate feeding sealing assembly, wherein the upper end of the fermentation tank body is provided with a tank body top cover, the upper end of the tank body top cover is fixedly mounted with a mixing motor, the intermediate feeding sealing assembly is fixedly mounted on the upper end of the tank body top cover, and a plurality of circulating stirring assemblies are fixedly mounted on the inner wall of the fermentation tank body; An intermediate feeding pipe is fixedly installed at the inner end of the intermediate feeding sealing assembly, a motor output extension shaft is coaxially fixedly installed on the output shaft of the mixing motor, an auger center shaft is coaxially fixedly installed at the lower end of the motor output extension shaft, auger blades are arranged on the side of the auger center shaft, and an insulating outer cover is arranged on the outside of the fermentation tank body.

[0005] Preferably, a plurality of platform connecting plates are fixedly mounted on the side of the thermal insulation outer cover, a feeding platform is fixedly mounted on the lower end of the platform connecting plate, and a protective fence is fixedly mounted on the upper surface of the feeding platform.

[0006] Preferably, a feed tank port is fixedly mounted on the upper end of the tank body top cover, and a plurality of tank body brackets are fixedly mounted on the lower end of the fermentation tank body.

[0007] Preferably, the intermediate feeding sealing assembly comprises: a sealing assembly base, a feeding upper tank opening, a feeding sealing support frame, a sealing crossbeam support frame, a rotating sleeve, a sealing rotating shaft, a telescopic sealing shaft, a downward pressure ball bracket, a sealing downward pressure ball, and a sealing rotating handle; The upper end of the sealing component base is integrally provided with a feeding tank opening, and two feeding sealing support frames are fixedly installed on the upper end of the sealing component base. A sealing crossbeam support frame is fixedly installed on the upper end of the feeding sealing support frame, and a rotating sleeve is integrally provided in the middle of the sealing crossbeam support frame; A sealed rotating shaft is rotatably arranged in the middle of the rotating sleeve, a sealed rotating handle is fixedly installed on the rear end of the sealed rotating shaft, a telescopic sealing shaft is fixedly installed on the front end of the sealed rotating shaft, a downward pressure ball bracket is arranged on the side of the telescopic sealing shaft, and a sealed downward pressure ball is rotatably installed in the middle of the downward pressure ball bracket.

[0008] Preferably, a sealing cover rotating rod is fixedly installed on the upper surface of the sealing assembly base and located on the side of the upper tank port of the feeding port, a rotating ring top cover is fixedly installed on the upper end of the sealing cover rotating rod, a sealing cover rotating ring is sleeved on the sealing cover rotating rod, a feeding port sealing cover is fixedly installed on the side of the sealing cover rotating ring, and a sealing rubber plug is fixedly installed on the lower end of the feeding port sealing cover.

[0009] Preferably, the lower end of the upper feeding tank opening is connected to the middle feeding pipe.

[0010] Preferably, the telescopic sealing shaft comprises: a sealing shaft body, a connecting shaft seat, a ball bracket base, a shaft body sliding groove, a limit stopper, and a sealing top spring; A connecting shaft seat is provided at one end of the sealing shaft body, a shaft body sliding groove is opened in the sealing shaft body, a limit stopper is slidably arranged in the shaft body sliding groove, a ball bracket base is integrated at the front end of the limit stopper, and a sealing top spring is provided at the rear end of the limit stopper.

[0011] Preferably, the circulating stirring assembly comprises: a stirring assembly base plate, a lifting slideway, a base plate support rod, a lifting circular plate, a circular plate connecting cable, a rotating ball groove, and a disc rotating ball; A plurality of substrate support rods are fixedly installed in the middle of the stirring component substrate, a lifting slide is integrally provided at the edge of the stirring component substrate, a plurality of lifting circular plates are slidably provided on the lifting slide, and circular plate connecting ropes are connected to each other on the lifting circular plates; A rotating ball groove is provided on each of the lifting circular plates, and a disc rotating ball is rotatably installed in the rotating ball groove.

[0012] Preferably, the heat-insulating outer cover comprises: an outer cover, a circulating air outlet, a circulating air inlet, an inner air partition slot, an electric heating ring, a channel partition, a circulating partition, an inner air partition slot air inlet, and an inner air partition slot air outlet; A circulating air outlet is provided at the lower end of the side surface of the outer cover, a circulating air inlet is provided at the upper end of the side surface of the outer cover, and a circulating baffle is integrated in the outer cover; An aisle partition is integrally arranged inside the outer cover and located at the upper end of the circulation partition, an electric heating ring is fixedly installed on the aisle partition, an inner air partition groove is fixedly installed on the inner wall of the outer cover, and a plurality of inner air partition groove air inlet holes and inner air partition groove air outlet holes are respectively opened in the inner air partition groove and located at the upper and lower sides of the circulation partition.

[0013] Preferably, the outer ends of the circulating air outlet and the circulating air inlet are connected to circulating fans.

[0014] The present invention provides a soybean fermentation device for soy sauce production, which has the following beneficial effects: (1) The present invention adds fermentation koji and fermentation bacteria into the fermentation tank body through the feed tank port, then seals the tank body top cover, and adds salt water therein through the intermediate feeding sealing component and the intermediate feeding pipe according to the time, then starts the mixing motor to drive the motor output extension shaft and the auger center shaft at the lower end, so that the auger blades can rotate to lift the material at the stirring center, and drive the circulating stirring component to lift the material at the stirring edge, thereby ensuring that the fermented material is clean; (2) The present invention drives the seal rotating shaft to rotate by rotating the seal rotating handle, and then rotates the seal shaft body at the front end, which drives the downward pressure ball bracket installed on the ball bracket base to flip, and is supported by the seal top spring, so that the seal downward pressure ball presses the feed port sealing cover at the lower end, so that the sealing rubber plug at the lower end can seal the feed tank opening. On the contrary, when it is opened, it is rotated on the seal cover rotating rod through the seal cover rotating ring and turned to the side for convenient feeding; (3) The present invention can push the lifting circular plate by rotating the auger blade, and reduce the lifting resistance by the disc rotating ball on it, and link each lifting circular plate to slide synchronously on the lifting slideway through the circular plate connecting rope, so that the lifting circular plate can be lifted on the lifting slideway in a relatively stable state, and the brine is stirred to mix with the material; (4) The present invention starts a fan connected to the outside to transfer the heat generated by the electric heating coil in the outer cover through the circulating air outlet and circulating air inlet holes, through both sides of the aisle partition, into the air inlet of the inner air isolation trough, circulates in the inner air isolation trough to keep the material warm, and circulates out from the air outlet of the inner air isolation trough at the lower end. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the cross-sectional structure along line aa; Figure 4 It is a structural schematic diagram of the intermediate feeding sealing assembly in the present invention; Figure 5It is a structural schematic diagram of the intermediate feeding sealing assembly in the present invention from another perspective; Figure 6 It is a schematic diagram of the structure of the telescopic sealing shaft member in the present invention; Figure 7 It is a schematic diagram of the side structure of the telescopic sealing shaft member in the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the cross-sectional structure of the middle bb line; Fig. 9 It is a schematic diagram of the structure of the circulating stirring component in the present invention; Fig.10 A schematic structural diagram of the circulating stirring component of the present invention from another perspective; Fig.11 It is a schematic structural diagram of the heat-insulating outer cover in the present invention; Fig.12 It is a schematic diagram of the side structure of the thermal insulation outer cover in the present invention; Fig.13 For the present invention Fig.12 Schematic diagram of the cross-sectional structure of the CC line.

[0016] Among them, 1. Fermentation tank body; 2. Tank body top cover; 3. Intermediate feeding sealing assembly; 301. Sealing assembly base; 302. Feeding upper tank opening; 303. Feeding sealing support frame; 304. Sealing crossbeam support frame; 305. Rotating sleeve; 306. Sealing rotating shaft; 307. Telescopic sealing shaft; 3071. Sealing shaft body; 3072. Connecting shaft seat; 3073. Ball bracket base; 3074. Shaft body sliding groove; 3075. Limiting stopper; 3076. Sealing top spring; 308. Pressing ball bracket; 309. Sealing pressing ball; 310. Sealing rotating handle; 311. Sealing cover rotating rod; 312. Sealing cover rotating circle; 313. Rotating circle top cover; 314. Feeding port sealing cover; 315. Sealing rubber plug; 4. Mixing motor ;5. Feed tank mouth;6. Circulation stirring assembly;601. Stirring assembly base plate;602. Lifting slide;603. Base plate support rod;604. Lifting circular plate;605. Circular plate connecting rope;606. Rotating ball slot;607. Disc rotating ball;7. Motor output extension shaft;8. Auger center axis;9. Auger blades;10. Intermediate feeding pipe;11. Feeding platform;12. Protective fence;13. Platform connecting plate;14. Insulation outer cover;1401. Outer cover;1402. Circulation air outlet;1403. Circulation air inlet;1404. Inner air partition;1405. Electric heating ring;1406. Aisle partition;1407. Circulation partition;1408. Inner air partition air inlet;1409. Inner air partition air outlet;15. Tank body bracket. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figures 1 to 3 As shown, the embodiment of the present invention provides a soybean fermentation device for soy sauce production, including a fermentation tank body 1, an intermediate feeding sealing component 3, the upper end of the fermentation tank body 1 is provided with a tank body top cover 2, the upper end of the tank body top cover 2 is fixedly installed with a mixing motor 4, the intermediate feeding sealing component 3 is fixedly installed on the upper end of the tank body top cover 2, and a plurality of circulating stirring components 6 are fixedly installed on the inner wall of the fermentation tank body 1; an intermediate feeding pipe 10 is fixedly installed on the inner end of the intermediate feeding sealing component 3, and a motor output extension shaft is coaxially fixedly installed on the output shaft of the mixing motor 4 7, an auger middle shaft 8 is coaxially fixedly installed at the lower end of the motor output extension shaft 7, and an auger blade 9 is arranged on the side of the auger middle shaft 8, an insulating outer cover 14 is arranged on the outer side of the fermentation tank body 1, and a plurality of platform connecting plates 13 are fixedly installed on the side of the insulating outer cover 14, a feeding platform 11 is fixedly installed at the lower end of the platform connecting plate 13, and a protective fence 12 is fixedly installed on the upper end surface of the feeding platform 11, a feeding tank port 5 is fixedly installed on the upper end of the tank body top cover 2, and a plurality of tank body brackets 15 are fixedly installed on the lower end of the fermentation tank body 1.

[0019] In the above technical scheme, fermentation koji and fermentation bacteria are added to the fermentation tank body 1 through the feed tank port 5, and then the tank body top cover 2 is sealed, and brine is added thereto through the intermediate feeding sealing component 3 and the intermediate feeding pipe 10 according to the time, and then the mixing motor 4 is started to drive the motor output extension shaft 7 and the auger center shaft 8 at the lower end, so that the auger blades 9 can rotate to lift the material in the stirring center, and drive the circulating stirring component 6 to lift the material at the stirring edge, so as to ensure that the fermented material is clean.

[0020] like Figure 1 , Figures 4 to 5As shown, the intermediate feeding sealing component 3 includes: a sealing component base 301, an upper feeding tank port 302, a feeding sealing support frame 303, a sealing cross beam support frame 304, a rotating sleeve 305, a sealing rotating shaft 306, a telescopic sealing shaft 307, a lower pressure ball bracket 308, a sealing lower pressure ball 309, and a sealing rotating handle 310; the upper end of the sealing component base 301 is integrated with the feeding tank port 302, the upper end of the sealing component base 301 is fixedly installed with two feeding sealing support frames 303, the upper end of the feeding sealing support frame 303 is fixedly installed with a sealing cross beam support frame 304, and the middle of the sealing cross beam support frame 304 is integrated with a rotating sleeve 305; the middle of the rotating sleeve 305 is rotatably provided with a sealing rotating shaft 306, and the rear end of the sealing rotating shaft 306 is fixedly installed. A sealing rotating handle 310 is fixedly installed, and a telescopic sealing shaft 307 is fixedly installed after the front end of the sealing rotating shaft 306 is notified, and a downward pressure ball bracket 308 is arranged on the side of the telescopic sealing shaft 307, and a sealing downward pressure ball 309 is rotatably installed in the middle of the downward pressure ball bracket 308, and a sealing cover rotating rod 311 is fixedly installed on the upper end surface of the sealing component base 301 and located on the side of the upper feeding tank port 302, and a rotating ring top cover 313 is fixedly installed on the upper end of the sealing cover rotating rod 311, and a sealing cover rotating ring 312 is sleeved on the sealing cover rotating rod 311, and a feeding port sealing cover 314 is fixedly installed on the side of the sealing cover rotating ring 312, and a sealing rubber plug 315 is fixedly installed on the lower end of the feeding port sealing cover 314, and the lower end of the feeding tank port 302 is connected to the middle feeding pipe 10.

[0021] like Figure 4 , Figures 6 to 8 As shown, the telescopic sealing shaft 307 includes: a sealing shaft body 3071, a connecting shaft seat 3072, a ball bracket base 3073, a shaft body sliding groove 3074, a limit stopper 3075, and a sealing top spring 3076; one end of the sealing shaft body 3071 is provided with a connecting shaft seat 3072, a shaft body sliding groove 3074 is opened in the sealing shaft body 3071, a limit stopper 3075 is slidably arranged in the shaft body sliding groove 3074, the front end of the limit stopper 3075 is integrated with the ball bracket base 3073, and the rear end of the limit stopper 3075 is provided with a sealing top spring 3076.

[0022] In the above technical solution, the sealing rotating shaft 306 is driven to rotate by rotating the sealing rotating handle 310, and then the sealing shaft body 3071 at the front end is rotated, which drives the downward pressure ball bracket 308 installed on the ball bracket base 3073 to flip over, and is supported by the sealing top spring 3076, so that the sealing downward pressure ball 309 presses the feeding port sealing cover 314 at the lower end, so that the sealing rubber plug 315 at the lower end can seal the feeding tank opening 302. On the contrary, when it is opened, it is rotated on the sealing cover rotating rod 311 through the sealing cover rotating circle 312 and turned aside for convenient feeding.

[0023] like Figure 3 , Fig. 9 , Fig.10 As shown, the circulating stirring component 6 includes: a stirring component base plate 601, a lifting slide 602, a base plate support rod 603, a lifting circular plate 604, a circular plate connecting rope 605, a rotating ball groove 606, and a disc rotating ball 607; a plurality of base plate support rods 603 are fixedly installed in the middle of the stirring component base plate 601, a lifting slide 602 is integrated at the edge of the stirring component base plate 601, a plurality of lifting circular plates 604 are slidably arranged on the lifting slide 602, and the lifting circular plates 604 are connected to each other with circular plate connecting ropes 605; a rotating ball groove 606 is opened on each of the lifting circular plates 604, and a disc rotating ball 607 is rotatably installed in the rotating ball groove 606.

[0024] In the above technical solution, the lifting circular plate 604 is pushed by the rotation of the auger blade 9, and the lifting resistance is reduced by the disc rotating ball 607 thereon, and each lifting circular plate 604 is linked to slide synchronously on the lifting slide 602 through the circular plate connecting rope 605, so that the lifting circular plate 604 can be lifted on the lifting slide 602 in a relatively stable state, and the brine is stirred to mix with the material.

[0025] like Figure 1 , Figures 11 to 13As shown, the heat-insulating outer cover 14 comprises: an outer cover 1401, a circulating air outlet hole 1402, a circulating air inlet hole 1403, an inner air partition 1404, an electric heating ring 1405, a channel partition 1406, a circulating partition 1407, an inner air partition air inlet hole 1408, and an inner air partition air outlet hole 1409; the outer cover 1401 has a circulating air outlet hole 1402 at the lower end of the side, and a circulating air inlet hole 1403 at the upper end of the side of the outer cover 1401. The outer cover 1401 is integrated with a circulating partition 1406. 07; An aisle partition 1406 is integrally provided inside the outer cover 1401 and located at the upper end of the circulation partition 1407, and an electric heating coil 1405 is fixedly installed on the aisle partition 1406. An inner wind partition groove 1404 is fixedly installed on the inner wall of the outer cover 1401. A plurality of inner wind partition groove air inlet holes 1408 and inner wind partition groove air outlet holes 1409 are respectively provided inside the inner wind partition groove 1404 and located at the upper and lower sides of the circulation partition 1407, and the outer ends of the circulation air outlet holes 1402 and the circulation air inlet holes 1403 are connected to circulation fans.

[0026] In the above technical solution, by starting the fan connected to the outside, the heat generated by the electric heating coil 1405 in the outer cover 1401 is transmitted through the circulating air outlet 1402 and the circulating air inlet 1403 through the two sides of the aisle partition 1406, enters the inner air isolation trough air inlet 1408, circulates in the inner air isolation trough 1404 to keep the material warm, and circulates out from the inner air isolation trough air outlet 1409 at the lower end.

[0027] Working principle: The present invention adds fermentation koji and fermentation bacteria into the fermentation tank body 1 through the feed tank port 5, then seals the tank body top cover 2, and adds salt water therein through the intermediate feeding sealing component 3 and the intermediate feeding pipe 10 according to the time, then starts the mixing motor 4, drives the motor output extension shaft 7 and the auger center shaft 8 at the lower end, so that the auger blade 9 can rotate and lift the material at the stirring center, and drive the circulating stirring component 6 to lift the material at the stirring edge, so as to ensure that the fermented material is clean; The sealing rotating shaft 306 is driven to rotate by rotating the sealing rotating handle 310, and then the sealing shaft body 3071 at the front end is rotated, which drives the downward pressure ball bracket 308 installed on the ball bracket base 3073 to flip, and is supported by the sealing top spring 3076, so that the sealing downward pressure ball 309 presses the feeding port sealing cover 314 at the lower end, so that the sealing rubber plug 315 at the lower end can seal the feeding upper tank opening 302. On the contrary, when it is opened, the sealing cover rotating circle 312 rotates on the sealing cover rotating rod 311 and turns to the side for convenient feeding; The auger blade 9 rotates to push the lifting circular plate 604, and the disc rotating ball 607 thereon reduces the lifting resistance, and the circular plate connecting rope 605 links each lifting circular plate 604 to slide synchronously on the lifting slide 602, so that the lifting circular plate 604 can be lifted in a relatively stable state on the lifting slide 602, and the brine is stirred and mixed with the material; Among them, by starting the fan connected to the outside, the heat generated by the electric heating coil 1405 in the outer cover 1401 is transmitted through the circulating air outlet 1402 and the circulating air inlet 1403 through the two sides of the aisle partition 1406, enters the inner air isolation trough air inlet 1408, circulates in the inner air isolation trough 1404 to keep the material warm, and circulates out from the inner air isolation trough air outlet 1409 at the lower end.

[0028] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A soybean fermentation device for soy sauce production, comprising a fermentation tank body (1) and an intermediate feeding sealing component (3), characterized in that: The fermentation tank body (1) is provided with a tank body top cover (2) at the upper end, a mixing motor (4) is fixedly mounted on the upper end of the tank body top cover (2), the intermediate feeding sealing assembly (3) is fixedly mounted on the upper end of the tank body top cover (2), and a plurality of circulating stirring assemblies (6) are fixedly mounted on the inner wall of the fermentation tank body (1); An intermediate feeding pipe (10) is fixedly mounted on the inner end of the intermediate feeding sealing assembly (3); a motor output extension shaft (7) is coaxially fixedly mounted on the output shaft of the mixing motor (4); an auger central shaft (8) is coaxially fixedly mounted on the lower end of the motor output extension shaft (7); auger blades (9) are arranged on the side of the auger central shaft (8); and a heat-insulating outer cover (14) is arranged on the outer side of the fermentation tank body (1).

2. A soybean fermentation device for soy sauce production according to claim 1, characterized in that: A plurality of platform connecting plates (13) are fixedly mounted on the side of the heat-insulating outer cover (14), a feeding platform (11) is fixedly mounted on the lower end of the platform connecting plate (13), and a protective fence (12) is fixedly mounted on the upper surface of the feeding platform (11).

3. A soybean fermentation device for soy sauce production according to claim 2, characterized in that: A feed tank opening (5) is fixedly mounted on the upper end of the tank body top cover (2), and a plurality of tank body brackets (15) are fixedly mounted on the lower end of the fermentation tank body (1).

4. A soybean fermentation device for soy sauce production according to claim 3, characterized in that: The intermediate feeding sealing assembly (3) comprises: a sealing assembly base (301), a feeding upper tank opening (302), a feeding sealing support frame (303), a sealing cross beam support frame (304), a rotating sleeve (305), a sealing rotating shaft (306), a telescopic sealing shaft (307), a downward pressure ball bracket (308), a sealing downward pressure ball (309), and a sealing rotating handle (310); The upper end of the sealing component base (301) is integrally provided with a feeding upper tank opening (302); the upper end of the sealing component base (301) is fixedly provided with two feeding sealing support frames (303); the upper end of the feeding sealing support frames (303) is fixedly provided with a sealing cross beam support frame (304); and the middle of the sealing cross beam support frame (304) is integrally provided with a rotating sleeve (305); A sealing rotating shaft (306) is rotatably arranged in the middle of the rotating sleeve (305), a sealing rotating handle (310) is fixedly installed at the rear end of the sealing rotating shaft (306), a telescopic sealing shaft member (307) is fixedly installed behind the front end of the sealing rotating shaft (306), a downward pressure ball bracket (308) is arranged on the side of the telescopic sealing shaft member (307), and a sealing downward pressure ball (309) is rotatably installed in the middle of the downward pressure ball bracket (308).

5. A soybean fermentation device for soy sauce production according to claim 4, characterized in that: A sealing cover rotating rod (311) is fixedly mounted on the upper surface of the sealing assembly base (301) and located on one side of the feeding upper tank opening (302); a rotating ring top cover (313) is fixedly mounted on the upper end of the sealing cover rotating rod (311); a sealing cover rotating ring (312) is sleeved on the sealing cover rotating rod (311); a feeding port sealing cover (314) is fixedly mounted on the side of the sealing cover rotating ring (312); and a sealing rubber plug (315) is fixedly mounted on the lower end of the feeding port sealing cover (314).

6. A soybean fermentation device for soy sauce production according to claim 5, characterized in that: The lower end of the upper feeding tank opening (302) is connected to the middle feeding pipe (10).

7. A soybean fermentation device for soy sauce production according to claim 6, characterized in that: The telescopic sealing shaft (307) comprises: a sealing shaft body (3071), a connecting shaft seat (3072), a ball bracket base (3073), a shaft body sliding groove (3074), a limit stopper (3075), and a sealing top spring (3076); A connecting shaft seat (3072) is provided at one end of the sealing shaft body (3071), a shaft body sliding groove (3074) is provided in the sealing shaft body (3071), a limit stopper (3075) is slidably provided in the shaft body sliding groove (3074), a ball bracket base (3073) is integrally provided at the front end of the limit stopper (3075), and a sealing top spring (3076) is provided at the rear end of the limit stopper (3075).

8. The soybean fermentation device for soy sauce production according to claim 7, characterized in that: The circulating stirring assembly (6) comprises: a stirring assembly base plate (601), a lifting slideway (602), a base plate support rod (603), a lifting circular plate (604), a circular plate connecting rope (605), a rotating ball groove (606), and a circular disc rotating ball (607); A plurality of substrate support rods (603) are fixedly mounted in the middle of the stirring component substrate (601); a lifting slideway (602) is integrally provided at the edge of the stirring component substrate (601); a plurality of lifting circular plates (604) are slidably provided on the lifting slideway (602); and circular plate connecting ropes (605) are connected to each other on the lifting circular plates (604); A rotating ball groove (606) is formed on each of the lifting circular plates (604), and a disc rotating ball (607) is rotatably mounted in the rotating ball groove (606).

9. A soybean fermentation device for soy sauce production according to claim 8, characterized in that: The heat-insulating outer cover (14) comprises: an outer cover (1401), a circulating air outlet (1402), a circulating air inlet (1403), an inner air trough (1404), an electric heating ring (1405), a channel partition (1406), a circulating partition (1407), an inner air trough air inlet (1408), and an inner air trough air outlet (1409); A circulating air outlet (1402) is provided at the lower end of the side surface of the outer cover (1401), a circulating air inlet (1403) is provided at the upper end of the side surface of the outer cover (1401), and a circulating baffle (1407) is integrally provided inside the outer cover (1401); An aisle partition (1406) is integrally provided inside the outer cover (1401) and located at the upper end of the circulation partition (1407), and an electric heating ring (1405) is fixedly installed on the aisle partition (1406). An inner air partition groove (1404) is fixedly installed on the inner wall of the outer cover (1401), and a plurality of inner air partition groove air inlet holes (1408) and inner air partition groove air outlet holes (1409) are respectively provided inside the inner air partition groove (1404) and located at the upper and lower sides of the circulation partition (1407).

10. A soybean fermentation device for soy sauce production according to claim 9, characterized in that: The outer ends of the circulating air outlet (1402) and the circulating air inlet (1403) are connected to a circulating fan.

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