CN216303758U - Fermentation tank cover and fermentation tank - Google Patents

Abstract

The utility model discloses a fermentation tank cover and a fermentation tank, and relates to the technical field of fermentation equipment, wherein the fermentation tank cover comprises a cover body, a closed storage cavity is arranged in the cover body, a ventilation structure for communicating the storage cavity with the outside is arranged on the cover body, and gas can enter the storage cavity through the ventilation structure; the fermentation tank comprises the fermentation tank cover; the utility model prevents gas from gathering at the fermentation product, enables the gas to be discharged in time, reduces the influence of the gas on the fermentation quality, does not need an operator to observe the gas generation condition in real time, reduces the labor intensity of workers and saves the labor cost. The condensed water is prevented from directly dropping into the fermentation product, the possibility of the deterioration of the microbial growth environment in the fermentation product and the mildew of the fermentation product caused by the influence of the condensed water is reduced, and the influence of the condensed water on the fermentation quality is reduced.

Description

Fermentation tank cover and fermentation tank

Technical Field

The utility model relates to the technical field of fermentation equipment, in particular to a fermentation tank cover and a fermentation tank.

Background

In the food industry, fermentation is a common process, and the process method is largely the same as or different from the prior art. For example, partial wine fermentation: fermented materials such as grains and the like are placed in a pottery jar or a pottery jar, the jar opening is sealed by a plastic film, and in order to provide a low-temperature anaerobic fermentation environment, the pottery jar or the pottery jar is generally placed in a basement or other low-temperature environments for natural fermentation in a centralized way by the traditional fermentation method.

During the fermentation of wine, the fermented grain produces great amount of gas, and the fermentation process can produce gas in the peak period of gas output and the gas is exhausted smoothly after the plastic film is loosened. Once the gas is not discharged timely, the fermentation temperature can be rapidly increased, and the fermentation quality is directly influenced. In addition, because the fermentation product generates heat while generating gas, the hot gas and the ambient air have larger temperature difference, when the hot gas contacts the plastic film, the hot gas can be condensed, condensate liquid is accumulated on the inner surface of the plastic film, after the accumulation lasts for a period of time, the mass of the condensate liquid is increased, the condensate liquid cannot be continuously attached to the inner surface of the plastic film, and the condensate liquid is dropped into the fermentation product under the action of gravity, so that the growth environment of microorganisms in the fermentation product is deteriorated, the fermentation product is moldy, and the fermentation quality is directly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: in view of the above problems, the present invention provides a cover and a fermentation tank for preventing the gas in the fermentation product from gathering in the internal environment of the fermentation product and preventing the gas in the fermentation product from condensing to form a condensate which is dropped into the fermentation product and affects the quality of the fermentation product.

The technical scheme adopted by the utility model is as follows:

a fermentation tank cover comprises a cover body, wherein a closed storage cavity is arranged in the cover body, a ventilation structure for communicating the storage cavity with the outside is arranged on the cover body, and gas can enter the storage cavity through the ventilation structure; when the storage cavity is in a non-closed state, gas and/or liquid is discharged from the storage cavity.

The gas that the fermentation thing that the lid covered produced moves to the direction that is close to the lid to gather in lid department, when the atmospheric pressure that the gaseous gathering produced is greater than the atmospheric pressure in the storage cavity, gaseous along the ventilation structure entering storage cavity. The storage cavity provides the space for gas, prevents that gas from gathering for a long time in the fermentation thing top that the lid covered, influences fermentation quality of fermentation thing, also prevents that gas from taking place the condensation on the lid, forms in the condensate drips into the fermentation thing, influences fermentation quality of fermentation thing.

Preferably, the cover body is provided with a discharge structure, the discharge structure is communicated with the storage cavity and the outside, the discharge structure can enable the storage cavity to be in a closed state or a non-closed state, and when the discharge structure enables the storage cavity to be in the non-closed state, gas and/or liquid is discharged from the storage cavity.

Preferably, the discharge structure is a liquid discharge structure and/or an exhaust structure, and when the exhaust structure enables the storage cavity to be in a non-closed state, the storage cavity discharges gas through the exhaust structure; when the liquid discharge structure enables the storage cavity to be in a non-closed state, liquid is discharged from the storage cavity through the liquid discharge structure.

The space of the storage cavity is filled with gas and/or liquid, and when the gas can not enter any more, the exhaust structure is opened, and the gas is released from the storage space; the liquid discharging structure is opened, and the liquid is discharged from the storage space. Provide storage space for follow-up gas and/or liquid, guarantee that the gas that the fermentation product constantly produced can both get into and store in the cavity, reduce the gathering of gas and the drippage of condensate on the fermentation product again.

Preferably, the ventilation structure is positioned on the lower surface of the cover body, so that gas below the cover body can enter the storage cavity; the exhaust structure is positioned on the upper surface of the cover body, so that the gas in the storage cavity can be exhausted from the upper part of the cover body; the liquid discharge structure is positioned on the lower surface of the cover body, so that liquid in the storage cavity is discharged from the liquid discharge structure.

The gas generated by the fermented product generally has heat, the hot gas moves upwards, the lower surface of the cover body is positioned above the fermented product and close to the fermented product, so the gas generated by the fermented product can move towards the direction close to the lower surface of the cover body, and the ventilation structure is arranged on the lower surface of the cover body and is used for enabling the gas to enter the storage cavity as soon as possible; the gas in the storage cavity continuously moves upwards, and the exhaust structure is arranged on the upper surface of the cover body and used for releasing the gas gathered in the upper surface of the cover body as soon as possible to vacate the space of the storage cavity; the liquid in the storage cavity drops downwards under the action of gravity and is gathered inside the lower surface of the cover body, and the liquid discharging structure is arranged on the lower surface of the cover body and used for discharging the liquid gathered at the position as soon as possible to vacate the space of the storage cavity.

Preferably, a liquid collecting area is arranged in the cover body and is communicated with the storage cavity, and the liquid collecting area is lower than the storage cavity, so that liquid in the storage cavity can flow into the liquid collecting area; the liquid discharge structure is communicated with the liquid collection area, so that liquid in the liquid collection area and/or the storage cavity can be discharged.

Preferably, an inclined surface is arranged in the storage cavity of the cover body, the inclined surface is arranged around the center of the cover body, so that a conical surface structure with a low middle high edge part is formed in the storage cavity, the liquid collection area is located at the lower area of the conical surface structure, and liquid in the storage cavity can flow into the liquid collection area along the conical surface structure.

The liquid has a mass which, under the influence of gravity, drips down and flows downwardly, and the liquid collection region is used to provide space for liquid to collect, and the liquid discharge structure is provided in this position to facilitate the discharge of liquid from the liquid collection region and/or the storage cavity.

Preferably, a gas collection area is arranged in the cover body and is communicated with the storage cavity, and the gas collection area is higher than the storage cavity, so that gas in the storage cavity can flow into the gas collection area; the exhaust structure is communicated with the gas collection area, so that gas in the gas collection area and/or the storage cavity can be exhausted.

Preferably, an inclined surface is arranged in the storage cavity of the cover body, the inclined surface is arranged around the center of the cover body, so that a conical surface structure with a high middle edge part is formed in the storage cavity, the gas collection area is located in the middle area of the conical surface structure, and gas in the storage cavity can flow into the gas collection area along the conical surface structure.

The gas is heated and moves upwards and gathers at a high position, the gas collection area is used for providing a space for gathering the gas, and the exhaust structure is arranged at the position so as to be convenient for exhausting the gas in the gas collection area and/or the storage cavity.

Preferably, the cover body comprises an inner liner and an outer shell, and the inner liner and the outer shell are sealed with each other to form a storage cavity; an unsealed state, the opening of the liquid discharge structure and/or the opening of the exhaust structure are formed between the inner liner and the outer shell, so that the storage cavity can be in the unsealed state.

The lining and the shell facilitate the manufacture of the cover body and the formation of the storage space.

Preferably, the lower surface of the cover body is made of a material capable of expanding and deforming, so that the gas entering amount in the storage space is increased, and the lower surface of the cover body expands to provide a larger storage space for the gas; the lid upper surface is the material that specific heat capacity is little, easily receives the outside temperature influence of lid, and is big with the gas temperature difference that gets into storage space, and the gas contact lid upper surface in the storage space easily takes place the condensation.

A fermentation tank comprises a tank body and a fermentation tank cover, wherein the fermentation tank cover can be arranged at the upper part or inside the tank body, and a sealing relation can be formed between the fermentation tank cover and the tank body, so that the inside of the tank body is isolated from the external environment; the fermentation tank cover comprises a cover body, the cover body is provided with a sealed storage cavity, the cover body is provided with a ventilation structure for communicating the storage cavity with the outside, and gas can enter the storage cavity through the ventilation structure; when the storage cavity is in a non-closed state, gas and/or liquid is discharged from the storage cavity.

Preferably, the cover body is provided with a discharge structure, the discharge structure is communicated with the storage cavity and the outside, the discharge structure can enable the storage cavity to be in a closed state or a non-closed state, and when the discharge structure enables the storage cavity to be in the non-closed state, gas and/or liquid is discharged from the storage cavity.

Preferably, the bottom of the tank body is provided with a liquid accumulation region, a filtering structure is arranged in the tank body, and the filtering structure is positioned above the liquid accumulation region; the fermented product is placed on a filtering structure and subjected to solid-liquid separation, and the separated liquid is gathered in the liquid accumulation area.

The fermented product inside the tank body can produce liquid in the fermentation process, the fermented product can not be soaked in the liquid for a long time, and the filtering structure is used for separating the fermented product from the liquid, so that the time for soaking the fermented product in the liquid is reduced, and the influence of the liquid on the fermentation quality of the fermented product is further reduced.

Preferably, the inner wall of the groove body and/or the outer wall of the cover body are provided with sealing elements at the contact positions of the two, so that the cover body and the groove body can form a sealing relationship.

The groove body and the cover body are sealed through the sealing piece, and the anaerobic environment required by the fermentation process of the fermentation product is provided with help.

Preferably, the drainage structure is a drainage structure and/or an exhaust structure; the cover body comprises a lining and an outer shell, and the lining and the outer shell are sealed with each other to form a storage cavity; the inner liner and the outer shell form an unsealed state, the opening of the liquid discharging structure and/or the opening of the air discharging structure, and gas and/or liquid in the storage cavity can be discharged.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that: the gas produced during fermentation of the fermentation product rises and enters the storage cavity from the aeration structure. The utility model prevents gas from gathering at the fermentation product, enables the gas to be discharged in time, reduces the influence of the gas on the fermentation quality, does not need an operator to observe the gas generation condition in real time, reduces the labor intensity of workers and saves the labor cost.

The gas entering the storage cavity is condensed to form condensed water, and the condensed water is gathered and dripped into the storage cavity. The utility model prevents the condensed water from directly dropping into the fermentation product, reduces the possibility of the deterioration of the microorganism growth environment in the fermentation product and the mildew of the fermentation product caused by the influence of the condensed water, and reduces the influence of the condensed water on the fermentation quality.

Drawings

FIG. 1 is a longitudinal sectional view of a fermenter cover in example 1 in the width direction.

FIG. 2 is a longitudinal sectional view of a fermenter cover according to example 2, taken along the longitudinal direction thereof.

Fig. 3 is a partially enlarged view of a in fig. 1 and 2.

Fig. 4 is a partially enlarged view of B in fig. 1 and 2.

Fig. 5 is a schematic view of the structure of the cover of the fermentation tank of embodiment 1 in combination with a fixing frame.

FIG. 6 is a schematic view showing the structure of a fermenter lid according to example 1.

FIG. 7 is a longitudinal sectional view of the fermenter cover according to example 2 in the width direction.

Fig. 8 is a partial enlarged view of C in fig. 7.

FIG. 9 is a longitudinal sectional view of the fermenter cover according to example 2, taken along the longitudinal direction thereof.

Fig. 10 is a partial enlarged view of D in fig. 9.

FIG. 11 is a bottom view of the fermenter cover according to example 2.

Fig. 12 is a partial enlarged view of E in fig. 11.

FIG. 13 is a schematic view showing the structure of a fermenter lid according to example 2.

FIG. 14 is a schematic view of the structure of a fermentation tank in example 3.

FIG. 15 is a longitudinal sectional view of a fermentation tank in example 3 in the longitudinal direction.

FIG. 16 is a longitudinal sectional view of a fermentation tank in example 3 in the width direction.

FIG. 17 is a schematic view of the structure of a fermentation tank in example 4.

FIG. 18 is a longitudinal sectional view of a fermentation tank in example 4 in the longitudinal direction.

FIG. 19 is a longitudinal sectional view of a fermentation tank in example 4 in the width direction.

The labels in the figure are: the device comprises a cover body-1, a shell-11, a check valve-111, a one-way exhaust valve-112, an inner liner-12, a ventilation structure-121, a butt-assembling hole-122, a fixing frame-13, a fixing hole-131, a sealing element-14, a handle-15, a tank body-2, a filtering structure-21, a drain pipe-22, a valve-23, a temperature measuring pipe-24 and a stabilizing frame-3.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Taking wine fermentation as an example:

example 1:

referring to fig. 1, 3 to 6, a fermentation tank cover includes a cover body having a rectangular shape. Four edges of the cover body 1 are bent downwards in an inclined mode, the middle portion of the cover body is horizontal, and included angles of 100-150 degrees, preferably 131 degrees, are formed between the edges and the middle portion.

The cover body 1 comprises a stainless steel outer shell 11 and a silicon film lining 12, a reticular fixed frame 13 is fixed inside the outer shell 11, the edge of the fixed frame 13 is hermetically welded with the edge of the outer shell 11, and a gap is formed between the fixed frame 13 and the outer shell 11. Fixing hole 131 is formed in fixing frame 13, butt joint holes adaptive to fixing holes 131 are also formed in inner liner 12, inner liner 12 is attached to fixing frame 13, the butt joint holes are coaxial and concentric with fixing holes 131, the butt joint holes and the fixing holes 131 are threaded holes, inner liner 12 is fixed on fixing frame 13 in a mode that bolts penetrate through the butt joint holes and the fixing holes 131, fixing frame 13 is located between inner liner 12 and shell 11, and a storage cavity is formed between inner liner 12 and shell 11. The lining 12 is a soft food-grade silicon membrane, and the thickness is 0.5-1.5 mm, preferably 1 mm.

The bent portion of the liner 12 is penetrated by a vent structure 121 communicating with the storage cavity, the vent structure 121 is a vent hole, the liner 12 forms an inclined surface from the bent portion to the edge, the lowest point of the inclined surface is a liquid collecting area, and the vent structure 121 is located at the highest point of the inclined surface. The hot carbon dioxide gas enters the storage cavity from the ventilation structure 121, contacts the shell 11 and is condensed, the formed condensed water falls vertically under the action of gravity, and due to the design of the bent part of the lining 12 and the position of the ventilation structure 121, the condensed water slides along the inclined plane formed by the bent part of the lining 12 to the liquid collection area to be collected. Preventing the condensed water from passing through the aeration structure 121 into the fermented product. In another preferred embodiment, the ventilation structure 121 is a hole through which only gas can pass, so that only carbon dioxide can pass in the form of gas, and condensed water cannot pass, and the condensed water in the storage cavity is prevented from passing through the ventilation structure 121 again to enter the fermented product. The design of the bending part of the cover body 1 ensures that the cover body 1 is taken down after the whole fermentation process is finished, and the condensed water gathered in the liquid collecting area is conveniently and intensively discharged. In addition, the stainless steel material of the shell 11 is easily influenced by external temperature, so that a larger temperature difference can be formed between the shell and the fermentation product, hot carbon dioxide can be easily condensed to form condensed water after contacting the shell 11, and a gathering space is provided for the carbon dioxide which continuously enters the storage cavity; the silica gel film material of the inner liner 12 is designed to facilitate the formation of a smaller temperature difference with the fermented product, so that when hot carbon dioxide touches the inner liner 12, a large amount of condensed water is not formed, and the condensed water formed on the inner liner 12 is prevented from being gathered and dropping in the fermented product; and the expansion deformation is convenient to occur, and a larger storage space is provided for the carbon dioxide gas.

Run through the flowing back structure of seting up intercommunication storage cavity on the shell 11, this flowing back structure is the outage, and flowing back structure internal seal is fixed with one-way intercommunication storage cavity to external environment's check valve 111, and it chooses for use steel ball formula check valve. The bent part of the shell 11 also forms an inclined plane, and the drainage structure is arranged at a position close to the liquid collection area and communicated with the liquid collection area.

The top of the edge of the horizontal part of the housing 11 is the highest point of the inclined plane, a gas collection area is formed at the highest point, the gas collection areas at the four corners of the horizontal part of the housing 11 are respectively provided with an exhaust structure, the exhaust structures are air overflow holes, and one-way exhaust valves 112 are hermetically fixed in the exhaust structures and are directed from the storage cavity to the external environment. Under the condition that the carbon dioxide gas generation rate is high, the one-way exhaust valve 112 is opened, and the carbon dioxide in the storage cavity is exhausted along the exhaust structure to provide space for other carbon dioxide generated by the fermentation product.

Example 2:

referring to fig. 2 to 4 and 7 to 13, a fermenter lid includes a lid body 1 in the shape of a rectangular plate.

Lid 1 includes shell 11 and the silica gel membrane inside lining 12 of stainless steel, 11 inner wall centers of shell department is outstanding downwards and has seted up a mounting hole at this outstanding department, 11 inner wall four sides of shell are outstanding downwards respectively and evenly have seted up a plurality of mounting holes in outstanding department, inside lining 12 centers department sets up the to dress hole 122 of adaptation in 11 inner wall centers of shell department mounting hole, inside lining 12 four sides also evenly set up a plurality of adaptations in the to dress hole 122 of the mounting hole of 11 inner wall four sides of shell, the mounting hole with to dress hole 122 be the screw hole, both aim at, pass the mounting hole through the bolt and fix inside lining 12 on shell 11 to the mode of dress hole 122. The inner liner 12 may be fixed to the other portion of the outer shell 11 at the edge by sealing, bonding or not.

The length of the downward protrusion of the center of the inner wall of the outer shell 11 is shorter than the length of the downward protrusion of the four sides of the inner wall of the outer shell 11, so that a storage cavity is formed between the liner 12 and the outer shell 11, the height of the center of the liner 12 is higher than the four sides of the liner 12, the liner 12 forms an inclined plane with the highest center and gradually descending towards the periphery, the lowest point of the inclined plane is a liquid collection area, and the highest point of the inclined plane is a gas collection area. The lining 12 is a soft food-grade silicone film with a thickness of 0.5-1.5 mm, preferably 0.5 mm.

The center of the liner 12 is provided with a ventilation structure 121 communicated with the storage cavity uniformly penetrating the periphery of the mounting hole 122, and the ventilation structure 121 is a ventilation hole. The hot carbon dioxide gas enters the storage cavity from the ventilation structure 121, contacts the shell 11 and is condensed, the formed condensed water falls vertically under the action of gravity, and the condensed water slides to a liquid collecting area along the inclined surface formed by the lining 12 and is collected. Preventing the condensed water from passing through the aeration structure 121 into the fermented product. In another preferred embodiment, the ventilation structure 121 is a hole through which only carbon dioxide gas can pass, but not condensed water, and the condensed water is prevented from passing through the ventilation structure 121 into the fermentation tank. The inner liner 12 is mounted in such a manner that the cover 1 is removed after the whole fermentation process is completed, thereby facilitating the concentrated discharge of the condensed water collected in the liquid collecting region. In addition, the stainless steel material of the shell 11 is easily influenced by external temperature, so that a larger temperature difference can be formed between the shell and the interior of the fermentation tank, hot carbon dioxide can be easily condensed to form condensed water after contacting the shell 11, and a gathering space is provided for the carbon dioxide which continuously enters the storage cavity; the silica gel film material of the inner liner 12 is designed to facilitate the formation of a smaller temperature difference with the fermented product, so that a large amount of condensed water cannot be formed when hot carbon dioxide touches the inner liner 12, and the condensed water formed on the inner liner 12 is prevented from being collected and dropping in the fermented product; and the expansion deformation is convenient to occur, and a larger storage space is provided for the carbon dioxide gas.

Run through the flowing back structure of seting up intercommunication storage cavity on the shell 11, this flowing back structure is the outage, and flowing back structure internal seal is fixed with one-way intercommunication storage cavity to external environment's check valve 111, and it chooses for use steel ball formula check valve. The drainage structure is arranged at the position of the liquid collecting area at the edge of the shell 11 and is communicated with the liquid collecting area, and the drainage structure is arranged at the position so as to be convenient for draining condensed water after fermentation is finished due to the gathering of the condensed water at the liquid collecting area.

The top of the edge of the housing 11 is the highest point of the inclined plane, which is the gas collection area, four corners of the top of the edge of the housing 11 are respectively provided with an exhaust structure, the exhaust structures are communicated with the gas collection area and are gas overflow holes, and a one-way exhaust valve 112 is hermetically fixed in the exhaust structures and is directed from the storage cavity to the external environment. Under the condition that the carbon dioxide gas generation rate is high, the one-way exhaust valve 112 is opened, and the carbon dioxide in the storage cavity is exhausted along the exhaust structure to provide space for other carbon dioxide generated by the fermentation product.

Example 1 same protocol as example 2:

handles 15 are fixed to two opposite sides of the top of the horizontal part of the housing 11, respectively, so that an operator can conveniently lift and place the cover body 1.

Example 3:

referring to fig. 14 to 16, a fermentation tank includes a tank body 2 and a fermentation tank cover as described in embodiment 1, wherein a cover body 1 is disposed inside the tank body 2 and presses on the fermentation product inside the tank body 2.

The lid 1 all around edge lateral wall is fixed with sealing member 14, and this sealing member 14 is elastic silica gel sealing strip, and 2 inner walls of cell body are hugged closely to sealing member 14, and cell body 2 passes through the sealing member with lid 1 and seals, and isolated fermentation tank inside and external environment provide help for the required anaerobic environment of fermentation process.

Example 4:

referring to fig. 17 to 19, a fermentation tank includes a tank body 2 and a fermentation tank cover as described in embodiment 2, wherein a cover body 1 covers the top of the tank body 2 to close the top opening of the tank body 2.

Lid 1 bottom all around is fixed with sealing member 14, and sealing member 14 is elastic silica gel sealing strip, and 2 inner walls of cell body are hugged closely to sealing member 14, and cell body 2 passes through the sealing member with lid 1 and seals, and isolated fermentation tank inside and external environment provide help for the required anaerobic environment of fermentation process.

Example 3 same protocol as example 4:

the bottom of the tank body 2 is of a horizontal semi-cylindrical structure, a filtering structure 21 which can only circulate liquid is fixed in the tank body 2, the filtering structure 21 is a filtering plate, a liquid accumulation area is formed between the filtering structure 21 and the bottom of the tank body 2, and a fermented product in the tank body 2 is arranged on the filtering structure 21 and cannot pass through the filtering structure 21 to fall to the bottom of the tank body 2. In the wine fermentation, because the grain leavening contains moisture, partial yellow water can be generated in the fermentation process, the design of the filtering structure 21 enables the yellow water to pass through and slide to the effusion area at the bottom of the groove body 2 along the inner wall of the cambered surface of the groove body 2, the leavening and the yellow water are isolated, the yellow water is directly separated from the leavening in the fermentation process, and the situation that partial leavening cannot be separated when being soaked in the yellow water, and the fermentation quality is influenced, is prevented. The bottom of the liquid accumulation area is communicated with a drainage mechanism, the drainage mechanism comprises a drainage pipe 22 and a valve 23 matched with the drainage pipe, after the fermentation is finished, the valve 23 is opened, and yellow water gathered in the liquid accumulation area is discharged along the drainage pipe 22.

The side wall of the tank body 2 is provided with a temperature measuring port, and a temperature measuring pipe 24 is fixed at the temperature measuring port in a sealing way.

Still including the steady rest 3 of adaptation in cell body 2, inside steady rest 3 was arranged in to cell body 2, increased the stability of cell body 2. The bottom of the stabilizing frame 3 can be provided with moving wheels according to actual requirements, so that the tank body 2 can be moved conveniently, and the labor intensity of manual carrying is reduced.

The tank body 2 is made of stainless steel materials, is different from a pottery jar or a pottery jar made of traditional fragile materials, is convenient for realizing automatic transfer transportation, and does not need to be transferred by manpower in the production process.

The fermentation tank cover replaces a plastic film, the sealing mode of the plastic film has higher requirements on the quality of operators for ensuring the sealing effect, and the plastic film can not reach the condition of automatic production.

The method of use of example 3 or example 4 is:

(1) flatly laying the fermented product on a filtering structure 21 in the tank body 2, and compacting and discharging gas in the fermented product;

(2) yellow water generated by the fermentation product in the fermentation process passes through the filtering structure 21 and is filtered into the liquid accumulation area;

(3) carbon dioxide gas generated by the fermentation product flows upwards under heating and is gathered at the lower surface of the liner 12, and when the air pressure generated by gathering the carbon dioxide gas is greater than the air pressure in the storage cavity, the carbon dioxide gas enters the storage cavity along the ventilation structure 121;

(4) when the temperature of the inner wall of the shell 11 is lower than the temperature of the carbon dioxide gas in the storage cavity, the carbon dioxide gas in the storage cavity contacts the shell 11 to be condensed, condensed water is formed on the inner wall of the shell 11 and continuously gathers until the condensed water drops into the storage cavity under the action of gravity;

(5) when the carbon dioxide gas in the storage cavity exceeds a threshold value, namely the space in the storage cavity is filled with the gas, the exhaust structure is opened, and the carbon dioxide gas in the storage cavity is discharged;

(6) after the fermentation is finished, taking down the cover body 1, opening the liquid discharge structure, and discharging carbon dioxide gas and/or condensed water in the storage cavity;

(7) the valve 23 is opened to drain the yellow water in the liquid accumulation area.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to aid in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

In the description of the present invention, it should be noted that the terms "center", "vertical", "horizontal", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally put in use of the products of the present invention, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the mechanism or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Claims (15)

1. A fermentation tank cover comprises a cover body and is characterized in that a sealed storage cavity is arranged in the cover body, a ventilation structure for communicating the storage cavity with the outside is arranged on the cover body, and gas can enter the storage cavity through the ventilation structure; when the storage cavity is in a non-closed state, gas and/or liquid is discharged from the storage cavity.

2. The cover for a fermentation tank of claim 1, wherein the cover body is provided with a discharge structure, the discharge structure is communicated with the storage cavity and the outside, the discharge structure can make the storage cavity in a sealed state or in an unsealed state, and when the discharge structure makes the storage cavity in the unsealed state, gas and/or liquid is discharged from the storage cavity.

3. The cover for a fermentation tank according to claim 2, wherein the exhaust structure is a liquid exhaust structure and/or a gas exhaust structure, and the gas exhaust structure allows the storage cavity to exhaust gas through the gas exhaust structure when the storage cavity is in the non-sealed state; when the liquid discharge structure enables the storage cavity to be in a non-closed state, liquid is discharged from the storage cavity through the liquid discharge structure.

4. The fermenter lid according to claim 3, wherein the vent structure is formed on a lower surface of the lid body to allow gas under the lid body to enter the storage cavity; the exhaust structure is positioned on the upper surface of the cover body, so that the gas in the storage cavity can be exhausted from the upper part of the cover body; the liquid discharge structure is positioned on the lower surface of the cover body, so that liquid in the storage cavity is discharged from the liquid discharge structure.

5. A fermentation tank cover according to claim 3 or 4, wherein a liquid collecting area is arranged in the cover body, the liquid collecting area is communicated with the storage cavity, and the liquid collecting area is lower than the storage cavity so that liquid in the storage cavity can flow into the liquid collecting area; the liquid discharge structure is communicated with the liquid collection area, so that liquid in the liquid collection area and/or the storage cavity can be discharged.

6. The fermenter cover of claim 5, wherein the storage cavity of the cover body has an inclined surface disposed around a center of the cover body such that a tapered structure having a middle high side portion is formed in the storage cavity, the liquid collecting region is located at a lower region of the tapered structure, and the liquid in the storage cavity can flow into the liquid collecting region along the tapered structure.

7. A fermentation tank cover according to claim 3 or 4, wherein a gas collection area is provided in the cover body, the gas collection area is communicated with the storage cavity, and the gas collection area is higher than the storage cavity so that gas in the storage cavity can flow into the gas collection area; the exhaust structure is communicated with the gas collection area, so that gas in the gas collection area and/or the storage cavity can be exhausted.

8. The fermentation tank cover according to claim 7, wherein the storage cavity of the cover body is provided with an inclined surface, the inclined surface is arranged around the center of the cover body, so that a conical surface structure with a middle high edge part is formed in the storage cavity, the gas collection area is positioned in the middle area of the conical surface structure, and gas in the storage cavity can flow into the gas collection area along the conical surface structure.

9. The fermenter lid according to claim 3 or 4, wherein the lid body comprises an inner liner and an outer casing, the inner liner and the outer casing being sealed to each other to form a storage cavity; an unsealed state, the opening of the liquid discharge structure and/or the opening of the exhaust structure are formed between the inner liner and the outer shell, so that the storage cavity can be in the unsealed state.

10. The fermenter cover according to claim 3 or 4, wherein the lower surface of the cover body is made of a material capable of expanding and deforming, so that the gas entering amount in the storage space is increased, and the lower surface of the cover body expands to provide a larger storage space for the gas; the lid upper surface is the material that specific heat capacity is little, easily receives the outside temperature influence of lid, and is big with the gas temperature difference that gets into storage space, and the gas contact lid upper surface in the storage space easily takes place the condensation.

11. A fermentation tank comprises a tank body and a fermentation tank cover, and is characterized in that the fermentation tank cover can be arranged at the upper part or inside the tank body, and a sealing relation can be formed between the fermentation tank cover and the tank body, so that the inside of the tank body is isolated from the external environment; the fermentation tank cover comprises a cover body, the cover body is provided with a sealed storage cavity, the cover body is provided with a ventilation structure for communicating the storage cavity with the outside, and gas can enter the storage cavity through the ventilation structure; when the storage cavity is in a non-closed state, gas and/or liquid is discharged from the storage cavity.

12. The fermenter according to claim 11, wherein the lid body is provided with a discharge structure, the discharge structure communicating the storage cavity with the outside, the discharge structure being capable of sealing the storage cavity or being in an unsealed state, the discharge structure being capable of discharging gas and/or liquid from the storage cavity when the storage cavity is in the unsealed state.

13. The fermentation tank of claim 12, wherein a liquid accumulation region is arranged at the bottom of the tank body, a filtering structure is arranged in the tank body, and the filtering structure is positioned above the liquid accumulation region; the fermented product is placed on a filtering structure and subjected to solid-liquid separation, and the separated liquid is gathered in the liquid accumulation area.

14. A fermenter according to claim 11, 12 or 13, wherein the inner wall of the body and/or the outer wall of the lid are provided with a sealing member at the location where they meet to provide a sealing relationship between the lid and the body.

15. A fermenter according to claim 12 or 13, wherein the drain structure is a drain structure and/or a vent structure; the cover body comprises a lining and an outer shell, and the lining and the outer shell are sealed with each other to form a storage cavity; the inner liner and the outer shell form an unsealed state, the opening of the liquid discharging structure and/or the opening of the air discharging structure, and gas and/or liquid in the storage cavity can be discharged.

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