Turnover type fish sauce fermentation tank

Abstract

The overturning type fish sauce fermentation tank comprises a support, a tank body and a rotating mechanism, the tank body is rotationally connected to the support, the rotating mechanism is used for driving the tank body to rotate, a sealing door capable of being opened and closed is arranged on the upper side of the tank body, and liquid outlet valves are arranged on the lower side of the tank body and the upper side of the sealing door; the fermentation tank further comprises a fermentation cage, a guide limiting mechanism and a connecting rod, sieve pores capable of filtering fish feed are formed in the fermentation cage, the fermentation cage comprises a cage body movably installed in the tank body up and down through the guide limiting mechanism and a cage cover detachably connected to the upper side of the cage body, and the connecting rod is vertically and fixedly connected to the upper side of the cage cover; the fermentation tank further comprises a water spraying mechanism and a cover opening mechanism, the cover opening mechanism is installed on the upper side of the sealing door and can open and close the cage cover through a connecting rod, the water spraying mechanism comprises a plurality of water outlet nozzles arranged on the inner side of the bottom of the tank body, and the water outlet nozzles are connected with a water pump. The overturning type fish sauce fermentation tank provided by the invention improves the initial fermentation speed and has a cleaning function.

Description

Technical Field

[0001] The present invention relates to the technical field of fish sauce fermentation, and particularly relates to a flip - type fish sauce fermentation tank. Background Art

[0002] In the existing fish sauce preparation, a fermentation tank is used for fermentation. During fermentation, fish materials, sea salt and fermentation starter are mixed and then poured into a sealed fermentation tank for fermentation. In the initial stage of fermentation, there is little fish sauce in the fermentation tank. Only the fish materials at the bottom are immersed in the fish sauce, and the degradation rate of the fish materials at the bottom is fast. The fish materials at the upper part do not contact the fish sauce, and the degradation rate of the fish materials at the upper part is slow, resulting in a generally slow fermentation speed in the early stage. Therefore, in the initial stage of fermentation, workers need to open the fermentation tank and stir the internal fish materials so that the fish materials can be mixed with the fish sauce, and the fermentation starter in the fish sauce can degrade the fish materials faster, thereby increasing the fermentation speed. In the later stage of fermentation, the fish sauce in the fermentation tank increases, and all fish materials are immersed in the fish sauce and have good contact with the fermentation starter, so stirring is no longer needed. After several months of fermentation, the desired fish sauce is obtained. In addition, after the fish sauce is discharged, fish residues remain in the fermentation tank. Workers need to fish out the fish residues in the fermentation tank and then wash the fermentation tank for the next fermentation.

[0003] In the prior art, for example, the fermentation tank with the application number CN202111486951.0 includes a tank body, a bracket and a rotating mechanism, and the tank body is rotatably installed on the bracket. When preparing fish sauce, fish materials, sea salt and fermentation starter are put into the tank body. In the initial stage of fermentation, although the rotating mechanism can stir the fish materials by rotating the tank body to make the fish materials with a low degradation degree in the upper layer and the fish materials with a high degradation degree in the lower layer mixed evenly to increase the fermentation speed, there is still room for improvement in the fermentation speed. In addition, although the tank body of the fermentation tank proposed in the above patent can rotate to pour out the fish residues in the tank body, it cannot clean the inside of the tank body, and it is troublesome to clean the tank body manually. Summary of the Invention

[0004] In order to solve the disadvantages of the existing fermentation tank with a slow initial fermentation speed and troublesome cleaning, the present invention provides a flip - type fish sauce fermentation tank to increase the initial fermentation speed and have a cleaning function.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A flip - type fish sauce fermentation tank, comprising a bracket, a tank body and a rotating mechanism. The tank body is rotatably connected to the bracket, and the rotating mechanism is used to drive the tank body to rotate. An openable and closable sealing door is arranged on the upper side of the tank body, and liquid outlet valves are arranged on both the lower side of the tank body and the upper side of the sealing door; The fermentation tank further includes a fermentation cage, a guiding and limiting mechanism and a connecting rod. The fermentation cage is provided with sieve holes for filtering fish materials. The fermentation cage includes a cage body that is installed in the tank body to move up and down through the guiding and limiting mechanism, and a cage cover that is detachably connected to the upper side of the cage body. The connecting rod is vertically fixedly connected to the upper side of the cage cover, passes through the sealing door and is slidably connected to the sealing door. The fermentation tank further includes a water spraying mechanism and an opening - cover mechanism. The opening - cover mechanism is installed on the upper side of the sealing door and can open and close the cage cover through the connecting rod. The water spraying mechanism includes a plurality of water outlet nozzles arranged on the inner side of the bottom of the tank body, and the water outlet nozzles are connected to a water pump.

[0006] With the above settings, first, the fermentation cage can prevent the fish materials from flowing, realize the up - and - down inversion of the fish materials, so that the fish materials with a low degradation degree in the upper layer can be uniformly transferred to the bottom of the tank body for degradation fermentation, further improving the fermentation efficiency; Second, after the opening - cover mechanism opens the cage cover, it is convenient to discharge materials after the tank body is flipped; Third, after the tank body is flipped, the water spraying mechanism sprays water to wash the cage body and the inner wall of the tank body, so as to clean the inside of the fermentation tank for the next fermentation; Fourth, the fermentation cage can prevent the fish materials from blocking the liquid outlet valve and preliminarily filter the fish sauce, improving the purity of the fish sauce.

[0007] Furthermore, the water spraying mechanism further includes a water spraying pipe vertically and fixedly connected in the tank body. The upper end of the water spraying pipe is located under the cage cover. A plurality of water outlet holes are arranged circumferentially on the water spraying pipe. The lower end of the water spraying pipe penetrates the bottom of the tank body and is connected to a water pump; The guiding and limiting mechanism includes a guiding sleeve vertically and fixedly connected in the cage body. The guiding sleeve is slidably sleeved on the water spraying pipe, and an avoidance groove for avoiding the water outlet holes is arranged on the guiding sleeve.

[0008] With the above settings, the inner wall of the cage body can be washed through the water spraying pipe, further improving the cleaning effect. In addition, the water spraying pipe supports and guides the cage body, making the up - and - down movement of the cage body more stable.

[0009] Furthermore, an installation groove is arranged on the inner side of the bottom of the tank body, and the water outlet nozzles are installed in the installation groove.

[0010] With the above settings, it is prevented that the fermentation cage crushes the water outlet nozzles.

[0011] Furthermore, the lower side of the cage body is spherical, and the inner side of the bottom of the tank body is spherical and is adapted to the lower side of the cage body.

[0012] With the above settings, the cleaning effect is further increased.

[0013] Further, the cage cover is threadedly connected to the cage body. The connecting rod is made of square steel. The opening mechanism includes a rotating body, a driving gear, a driven gear, and a motor. The rotating body is rotatably and sealingly connected to the sealing door. The square steel penetrates through the rotating body and is slidably and sealingly connected to the rotating body. The driven gear is fixedly connected to the rotating body. The motor is fixedly connected to the upper side of the sealing door and is connected to the driving gear. The driving gear meshes with the driven gear.

[0014] With the above settings, the motor drives the cage cover to rotate through the driving gear, the driven gear, the rotating body, and the square steel to tighten or loosen the cage cover.

[0015] Further, the sealing door is provided with a rotating groove penetrating through the upper and lower sides. The rotating body is rotatably and sealingly connected in the rotating groove. A first sealing ring is provided between the rotating body and the rotating groove. A second sealing ring is provided between the square steel and the rotating body.

[0016] With the above settings, leakage between the rotating groove and the rotating body is prevented, and leakage of fish sauce between the square steel and the rotating body is prevented.

[0017] Further, the guiding and limiting mechanism further includes a plurality of limiting grooves. The limiting grooves are fixedly connected to the inner wall of the tank body along the circumferential direction. A plurality of fixing blocks are fixedly connected to the outer periphery of the cage body. The fixing blocks are slidably connected in the limiting grooves.

[0018] With the above settings, the limiting grooves and the fixing blocks limit the movement range of the fermentation cage and prevent the cage body from falling out of the tank body.

[0019] Further, the ratio of the outer diameter of the cage body to the inner diameter of the tank body is greater than or equal to 80% and less than or equal to 95%.

[0020] With the above settings, the distance between the outer wall of the cage body and the inner wall of the tank body is small, and the utilization rate inside the tank body is higher.

[0021] Further, an ear plate is fixedly connected to one side of the upper end of the tank body, and a connecting member is fixedly connected to one side of the sealing door. The connecting member is rotatably connected to the ear plate.

[0022] With the above settings, the sealing door is rotatably connected to the tank body through the connecting member and the ear plate, which facilitates the opening and closing of the sealing door. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the fermentation tank of the embodiment.

[0024] Figure 2 It is a cross-sectional view of the fermentation tank of the embodiment.

[0025] Figure 3 It is a schematic diagram of the tank body and the fermentation cage of the embodiment after being flipped.

[0026] Figure 4 It is a schematic diagram of the cage cover being screwed out of the cage body of the embodiment.

[0027] Figure 5 Schematic diagram when cleaning the fermenter of the embodiment. Specific embodiments

[0028] The technical solution of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0029] As Figures 1 to 5 shown, a flip - type fish sauce fermenter includes a bracket 3, a tank body 4 and a rotating mechanism 5. The tank body 4 is rotatably connected to the bracket 3, and the rotating mechanism 5 is used to drive the tank body 4 to rotate. A closable sealing door 6 is provided on the upper side of the tank body 4, and liquid outlet valves 7 are provided on the lower side of the tank body 4 and the upper side of the sealing door 6; The fermenter further includes a fermentation cage 8, a guiding and limiting mechanism 9 and a connecting rod 10. The fermentation cage 8 is provided with sieve holes (not shown in the figure) for filtering fish materials. The fermentation cage 8 includes a cage body 81 movably installed up and down in the tank body 4 through the guiding and limiting mechanism 9, and a cage cover 82 detachably connected to the upper side of the cage body 81. The connecting rod 10 is vertically fixedly connected to the upper side of the cage cover 82, and the connecting rod 10 passes through the sealing door 6 and is slidably connected to the sealing door 6. The fermenter further includes a water spraying mechanism 11 and an opening mechanism 12. The opening mechanism 12 is installed on the upper side of the sealing door 6 and can open and close the cage cover 82 through the connecting rod 10. The water spraying mechanism 11 includes a plurality of water outlet nozzles 111 provided on the inner side of the bottom of the tank body 4, and the water outlet nozzles 111 are connected to a water pump (not shown in the figure).

[0030] Through the above settings, first, the fermentation cage 8 can prevent the fish materials from flowing, realize the up - and - down inversion of the fish materials, so that the fish materials with a low degradation degree in the upper layer can be uniformly transferred to the bottom of the tank body 4 for degradation and fermentation, further improving the fermentation efficiency; Second, after the opening mechanism 12 opens the cage cover 82, it is convenient to discharge materials after the tank body 4 is flipped; Third, after the tank body 4 is flipped, the water spraying mechanism 11 sprays water to wash the cage body 81 and the inner wall of the tank body 4, so as to clean the inside of the fermenter for the next fermentation; Fourth, the fermentation cage 8 can prevent the fish materials from blocking the liquid outlet valve 7 and preliminarily filter the fish sauce, improving the purity of the fish sauce.

[0031] In this application, the support 3 is used to support the tank body 4. Specifically, there are two supports 3, which are respectively arranged on the left and right sides of the tank body 4. The upper end of the support 3 is rotatably connected to the middle part of the tank body 4. The rotating mechanism 5 includes a servo system arranged at the upper end of one of the supports 3, which is used to drive the tank body 4 to turn up and down. The tank body 4 is basically a vertically arranged cylindrical structure. The sealing door 6 is basically a circular structure, which is sealed on the upper side of the tank body 4. A rubber ring is arranged between the sealing door 6 and the tank body 4 to increase the sealing performance and prevent the fish sauce from leaking out. The fermentation cage 8 is basically a cylindrical structure coaxially arranged in the tank body 4. The fermentation cage 8 is densely provided with sieve holes, and the diameter of the sieve holes is smaller than the diameter of the fish feed to prevent the fish feed from leaking out of the fermentation cage 8 through the sieve holes. The lower end of the fermentation cage 8 abuts against the bottom of the tank body 4, and the upper end does not contact the sealing door 6, so that the fermentation cage 8 can move up and down in the tank body 4. When fermenting fish sauce, the opening mechanism 12 opens the cage cover 82 through the connecting rod 10. After opening the cage cover 82 and the sealing door 6, the fish feed mixed with the fermentation starter and sea salt is basically filled into the cage body 81, and then the cage cover 82 and the sealing door 6 are covered. The opening mechanism 12 tightly covers the cage cover 82 on the cage body 81 through the connecting rod 10. At this time, the ratio of the volume of the fish feed to the volume of the fermentation cage 8 is greater than 95%, which prevents the fish feed from flowing in the fermentation cage 8 when the fermentation cage 8 turns. And the ratio of the volume of the fish feed to the space inside the tank body 4 is greater than 70% and less than 80%, so that there is more space between the tank body 4 and the fermentation cage 8, preventing the pressure in the tank body 4 from being too high due to the generation of gas during fermentation and affecting the sealing performance of the tank body 4. After the fermentation starts, the fermentation starter degrades the fish, producing fish sauce. The fish sauce accumulates at the bottom of the tank body 4 under the action of gravity, making the lower-layer fish feed preferentially immersed in the fish sauce. The fish sauce provides a more favorable fermentation environment, making the degradation speed of the lower-layer fish feed faster than that of the upper-layer fish feed. That is, the degradation degree of the lower-layer fish feed is also greater than that of the upper-layer fish feed. And as the degradation degree of the fish feed increases, the content of components such as protein in it decreases, and the degradation speed is slower than that of the fish feed with a smaller degradation degree. To increase the fermentation rate at the initial stage of fermentation, the rotating mechanism 5 drives the tank body 4 to rotate 180 degrees, and the upper and lower ends of the tank body 4 and the internal fermentation cage 8 are reversed, as Figure 3As shown, the fermentation cage 8 moves downward under the action of the guide limit mechanism 9 and abuts against the sealing door 6. Since the fermentation cage 8 is basically full of fish materials, after the fermentation cage 8 is turned over, the upper and lower layers of fish materials in the fermentation cage 8 are reversed. At this time, the fish sauce flows down to the bottom of the tank body 4 under the action of gravity, and the fish sauce in the gaps between the fish materials penetrates downward to moisten the fish materials, and the fish sauce immerses the fish materials near the bottom of the tank body 4. At this time, the fish materials near the bottom of the tank body 4 are all fish materials with a small degree of degradation originally located in the upper layer. The content of components such as protein in these fish materials is greater than that of the fish materials with a large degree of degradation originally located in the lower layer. After the fish sauce contacts these fish materials, the degradation speed of the fish materials is faster, and the fish sauce production speed is also faster. After the fish materials originally located in the lower layer are turned upside down, some fish sauce still remains on the surface, which basically does not affect their degradation. At this point, after the fermentation cage 8 and the tank body 4 are turned upside down, the overall fermentation speed of the fish materials is increased. In a conventional fermentation tank, the fish feed can only be filled to 70-80%, but not full. There is no limit on the fish feed in the fermentation tank. When the fermentation tank is turned over, the fish feed is easy to flow and cannot be reversed from top to bottom. The fish feed can only be stirred. After the fish feed is stirred, the fish feed near the bottom of the fermentation tank is a mixture of fish feed with a large degree of degradation and fish feed with a small degree of degradation. The content of components such as protein in the mixed fish feed is not maximized. However, after the tank body 4 of the present application is turned upside down, the fermentation cage 8 limits the fish feed, so that the positions of the upper and lower layers of fish feed can be reversed. The fish feed with a small degree of degradation originally located in the upper layer near the bottom of the tank body 4 has a larger content of components such as protein. After contacting with fish sauce, the fermentation and degradation speed is faster. In the initial fermentation stage of the fermentation tank of the present application, the tank body 4 is turned upside down every 7-10 days to increase the fermentation speed. During the fermentation process, an appropriate amount of fish sauce can be discharged through the lower liquid outlet valve 7 to detect the quality of the fish sauce. When the fish sauce liquid level in the tank body 4 is higher than 2 / 3 of the height of the fermentation cage 8, that is, at least 2 / 3 of the fish material is immersed in the fish sauce, the rotating mechanism 5 returns the tank body 4, and the sealing door 6 is relocated to the upper side of the tank body 4 for later static fermentation. After the quality of the fish sauce output by the liquid outlet valve 7 meets the requirements, the lower liquid outlet valve 7 is opened to discharge the fish sauce in the tank body 4. The fish material in the tank body 4 has become fish residue at this time, and the cover opening mechanism 12 opens the cage cover 82 through the connecting rod 10. Figure 4 As shown, after the sealing door 6 is opened, the sealing door 6 opens the cage cover 82 through the connecting rod 10, the cage cover 82 is separated from the cage body 81, and the rotating mechanism 5 slowly turns over the tank body 4, as shown in FIG. Figure 5 As shown, the fish residue in the cage 81 is poured out, and the guide limit mechanism 9 prevents the cage 81 from falling out of the tank 4. After the water outlet 111 sprays water, the water outlet 111 flushes the cage 81 and the inner wall of the tank 4, reducing the labor intensity of the workers. After the workers manually flush the sealing cover and the cage cover 82, the rotating mechanism 5 rotates the tank 4. At this time, the water outlet 111 can continue to spray water. After the water flow flushes the bottom of the tank 4, it is discharged through the lower liquid outlet valve 7, further increasing the cleanliness of the tank 4 in preparation for the next fermentation.

[0032] As an implementation, the water spraying mechanism 11 further includes a water spraying pipe 112 vertically and fixedly connected in the tank body 4. The upper end of the water spraying pipe 112 is located below the cage cover 82. A plurality of water outlets 113 are circumferentially arranged on the water spraying pipe 112. The lower end of the water spraying pipe 112 penetrates through the bottom of the tank body 4 and is connected to a water pump; the guiding and limiting mechanism 9 includes a guiding sleeve 91 vertically and fixedly connected in the cage body 81. The guiding sleeve 91 is slidably sleeved on the water spraying pipe 112, and an avoidance groove 92 for avoiding the water outlets 113 is arranged on the guiding sleeve 91.

[0033] Through the above settings, the inner wall of the cage body 81 can be washed by the water spraying pipe 112, further improving the cleaning effect. In addition, the water spraying pipe 112 supports and guides the cage body 81, making the up and down movement of the cage body 81 more stable.

[0034] In this application, the water spraying pipe 112 is coaxially and fixedly connected in the tank body 4. The fermentation cage 8 is slidably connected to the water spraying pipe 112 through the guiding sleeve 91. The fermentation cage 8 increases the stability of the up and down movement of the cage body 81. When the tank mouth of the tank body 4 faces downward, the water pump sprays water to the inner wall of the cage body 81 through the water spraying pipe 112, the water outlets 113 and the avoidance groove 92 to wash the inner wall of the cage body 81, as Figure 5 shown.

[0035] As an implementation, an installation groove 13 is arranged on the inner side of the bottom of the tank body 4, and the water outlet nozzle 111 is installed in the installation groove 13.

[0036] Through the above settings, it is prevented that the fermentation cage 8 presses and damages the water outlet nozzle 111.

[0037] As an implementation, the lower side of the cage body 81 is spherical, and the inner side of the bottom of the tank body 4 is spherical and is adapted to the lower side of the cage body 81.

[0038] Through the above settings, the cleaning effect is further increased.

[0039] After the bottom of the tank body 4 of this application faces upward, as Figure 5 shown, when the water outlet nozzle 111 sprays water downward, the water flow output by the water outlet nozzle 111 near the outer side directly obliquely shoots onto the inner wall of the tank body 4, and the water flow output by the other water outlet nozzles 111 shoots downward onto the upper side of the cage body 81. The water flow flows outward under the action of the spherical surface on the upper side of the cage body 81, secondarily flushing the inner wall of the tank body 4.

[0040] As an implementation, the cage cover 82 is threadedly connected to the cage body 81. The connecting rod 10 is set as a square steel. The cover opening mechanism 12 includes a rotating body 121, a driving gear 122, a driven gear 123 and a motor 124. The rotating body 121 is sealingly and rotatably connected to the sealing door 6. The square steel penetrates through the rotating body 121 and is sealingly and slidably connected to the rotating body 121. The driven gear 123 is fixedly connected to the rotating body 121. The motor 124 is fixedly connected to the upper side of the sealing door 6 and is connected to the driving gear 122. The driving gear 122 meshes with the driven gear 123.

[0041] With the above settings, the motor 124 drives the cage cover 82 to rotate through the driving gear 122, the driven gear 123, the rotating body 121 and the square steel to tighten or loosen the cage cover 82.

[0042] In this application, the square steel is coaxially and fixedly connected to the upper side of the cage cover 82 and penetrates through the driven gear 123. When the cage cover 82 is tightened on the upper side of the cage body 81, the fermentation cage 8 is closed. When the fermentation cage 8 moves up and down in the tank body 4, the square steel moves axially and slides relative to the rotating body 121. The motor 124 drives the cage cover 82 to rotate through the driving gear 122, the driven gear 123, the rotating body 121 and the square steel. The rotating part is axially fixed in the rotating groove and does not move up and down. The cage cover 82 is screwed out of the upper side of the cage body 81. At this time, the sealing door 6 is opened, and the sealing door 6 drives the cage cover 82 through the square steel, and the cage cover 82 is also opened, which is convenient for discharging fish dregs and cleaning. After the fish feed is loaded into the cage body 81, the sealing door 6 and the cage cover 82 are covered back, and the motor 124 rotates in the reverse direction, and the cage cover 82 is screwed back onto the cage body 81.

[0043] As an implementation, the sealing door 6 is provided with a rotating groove penetrating the upper and lower sides. The rotating body 121 is sealingly and rotatably connected in the rotating groove. A first sealing ring 14 is provided between the rotating body 121 and the rotating groove. A second sealing ring 15 is provided between the square steel and the rotating body 121.

[0044] With the above settings, leakage between the rotating groove and the rotating body 121 is prevented, and leakage of fish sauce between the square steel and the rotating body 121 is prevented.

[0045] As an implementation, the guiding and limiting mechanism 9 further includes a plurality of limiting grooves 93. The limiting grooves 93 are fixedly connected to the inner wall of the tank body 4 along the circumferential direction. A plurality of fixing blocks 94 are fixedly connected to the outer periphery of the cage body 81. The fixing blocks 94 are slidably connected in the limiting grooves 93.

[0046] With the above settings, the limiting grooves 93 and the fixing blocks 94 limit the movement range of the fermentation cage 8 and prevent the cage body 81 from falling out of the tank body 4.

[0047] The limiting groove 93 of the present application is vertically installed on the inner wall of the tank body 4. The fixing block 94 can only move up and down along the limiting groove 93. When the cage cover 82 is tightened, it prevents the cage body 81 from rotating. The limiting groove 93 defines the up and down movement range of the fixing block 94. When the bottom of the tank body 4 faces upward, the fixing block 94 abuts against the end of the limiting groove 93 to prevent the cage body 81 from falling out of the tank body 4.

[0048] As an implementation manner, the ratio of the outer diameter of the cage body 81 to the inner diameter of the tank body 4 is greater than or equal to 80% and less than or equal to 95%.

[0049] Through the above settings, the distance between the outer wall of the cage body 81 and the inner wall of the tank body 4 is smaller, and the utilization rate inside the tank body 4 is higher.

[0050] As an implementation manner, one side of the upper end of the tank body 4 is fixedly connected with an ear plate 16, and one side of the sealing door 6 is fixedly connected with a connecting piece 17. The connecting piece 17 is rotatably connected with the ear plate 16.

[0051] Through the above settings, the sealing door 6 is rotatably connected with the tank body 4 through the connecting piece 17 and the ear plate 16, which facilitates the opening and closing of the sealing door 6.

[0052] Between the sealing door 6 and the tank body 4 of the present application can be locked through fasteners or buckles or elbow clips, etc.

[0053] It should be understood that for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. A flip - type fish sauce fermentation tank, characterized in that, It includes a bracket, a tank body and a rotating mechanism. The tank body is rotatably connected to the bracket, and the rotating mechanism is used to drive the tank body to rotate. A sealable door is provided on the upper side of the tank body, and liquid outlet valves are provided on both the lower side of the tank body and the upper side of the sealable door; the fermentation tank further includes a fermentation cage, a guiding and limiting mechanism and a connecting rod. The fermentation cage is provided with sieve holes for filtering fish feed. The fermentation cage includes a cage body that is installed in the tank body and can move up and down through the guiding and limiting mechanism, and a cage cover that is detachably connected to the upper side of the cage body. The connecting rod is vertically fixedly connected to the upper side of the cage cover. The connecting rod penetrates through the sealable door and is slidably connected to the sealable door. The fermentation tank further includes a water spraying mechanism and an opening mechanism. The opening mechanism is installed on the upper side of the sealable door and can open and close the cage cover through the connecting rod. The water spraying mechanism includes a plurality of water outlet nozzles provided on the inner side of the bottom of the tank body, and the water outlet nozzles are connected to a water pump.

2. The turnover type fish sauce fermentation tank according to claim 1, characterized in that, The water spraying mechanism further includes a water spraying pipe vertically fixedly connected in the tank body. The upper end of the water spraying pipe is located under the cage cover. A plurality of water outlet openings are provided circumferentially on the water spraying pipe. The lower end of the water spraying pipe penetrates through the bottom of the tank body and is connected to a water pump; the guiding and limiting mechanism includes a guiding sleeve vertically fixedly connected in the cage body. The guiding sleeve is slidably sleeved on the water spraying pipe, and an avoidance groove for avoiding the water outlet openings is provided on the guiding sleeve.

3. The flip - type fish sauce fermentation tank according to claim 2, characterized in that, An installation groove is provided on the inner side of the bottom of the tank body, and the water outlet nozzles are installed in the installation groove.

4. A flip - type fish sauce fermentation tank according to claim 1, characterized in that, The lower side of the cage body is spherical, and the inner side of the bottom of the tank body is spherical and is adapted to the lower side of the cage body.

5. A turnover type fish sauce fermentation tank according to claim 1, characterized in that, The cage cover is threadedly connected to the cage body. The connecting rod is made of square steel. The opening mechanism includes a rotating body, a driving gear, a driven gear and a motor. The rotating body is hermetically and rotatably connected to the sealable door. The square steel penetrates through the rotating body and is hermetically and slidably connected to the rotating body. The driven gear is fixedly connected to the rotating body. The motor is fixedly connected to the upper side of the sealable door and is connected to the driving gear. The driving gear meshes with the driven gear.

6. The turnover type fish sauce fermentation tank according to claim 5, wherein, The sealable door is provided with a rotating groove penetrating through the upper and lower sides. The rotating body is hermetically and rotatably connected in the rotating groove. A first sealing ring is provided between the rotating body and the rotating groove. A second sealing ring is provided between the square steel and the rotating body.

7. A flip - type fish sauce fermentation tank according to claim 2, characterized in that, The guiding and limiting mechanism further includes a plurality of limiting grooves. The limiting grooves are fixedly connected to the inner wall of the tank body along the circumference. A plurality of fixing blocks are fixedly connected to the outer circumference of the cage body. The fixing blocks are slidably connected in the limiting grooves.

8. A flip - type fish sauce fermenter according to claim 1, characterized in that, The ratio of the outer diameter of the cage body to the inner diameter of the tank body is greater than or equal to 80% and less than or equal to 95%.

9. The turnover type fish sauce fermentation tank according to claim 1, wherein, An ear plate is fixedly connected to one side of the upper end of the tank body. A connecting piece is fixedly connected to one side of the sealable door. The connecting piece is rotatably connected to the ear plate.

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