Food fermentation tank
By introducing an exhaust assembly consisting of a fixed cylinder and a purification cylinder into the food fermentation tank, and using HEPA filters and activated carbon plates to purify the gas, the problems of increased pressure and odor pollution caused by gas emissions from the fermentation tank are solved, achieving a safe and efficient gas purification effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGHAI UNIVERSITY
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-12
AI Technical Summary
Existing food fermentation tanks are prone to increased internal pressure during gas discharge, which may lead to explosions. Furthermore, the discharged gases have an irritating odor, pollute the environment, and endanger health.
An exhaust assembly was designed, including a fixed cylinder, a purification cylinder, a HEPA filter, and an activated carbon plate. Gas inside the tank is introduced into the purification cylinder through a connecting pipe for filtration and adsorption. The HEPA filter removes particulate matter, the activated carbon plate adsorbs odors, and photocatalytic coating further purifies the gas, ensuring that the gas emissions are safe and harmless.
It effectively removes particulate matter and odors while releasing food fermentation gases, protecting the atmospheric environment and the health of workers, and avoiding safety hazards caused by excessive pressure inside the tank.
Smart Images
Figure CN224227025U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to food fermentation technical field especially, it is a kind of food fermentation tank. BACKGROUND
[0002] Food fermentation tank is a kind of biochemical reaction equipment specially used for microbial fermentation, by providing suitable temperature, humidity, aeration and stirring conditions, so that strain is multiplied in liquid culture medium and secretes the required metabolic product. Food fermentation tank is usually composed of tank body, stirring system, aeration system, temperature control system and control system etc. Tank body is generally made of stainless steel material, with good corrosion resistance and sealing, to ensure the sterile environment of fermentation process. Stirring system is rotated by stirring paddle, so that culture medium and strain are fully mixed, and fermentation efficiency is improved. Aeration system is responsible for the sterile air into the tank, to meet the demand of strain to oxygen. Temperature control system maintains the suitable temperature range in tank by heating or cooling medium.
[0003] In the food fermentation process, a large amount of carbon dioxide and ammonia gas etc. Gas makes the gas pressure inside the fermentation tank increase, easy to damage the tank body, high-pressure environment is not suitable for the survival of strain, easy to lead to food fermentation failure, and the gas in the fermentation tank has irritating odor when discharging, pollutes the atmospheric environment, also causes harm to the health of staff. CONTENT OF THE UTILITY MODEL
[0004] According to the above deficiencies in prior art, the technical problem to be solved by the utility model is to provide a kind of food fermentation tank, the gas in tank body is discharged while its peculiar smell is purified, to avoid polluting atmospheric environment.
[0005] The food fermentation tank, including tank body, the tank body top is equipped with mounting hole, mounting hole is provided with the fixed cylinder of opening downward, fixed cylinder is provided with the exhaust component for discharging the gas in tank body in it, fixed cylinder side wall is provided with purification cylinder, purification cylinder is connected with fixed cylinder by connecting pipe and is communicated, purification cylinder is provided with the HEPA layer board for removing the pollution microparticle in gas in it, HEPA layer board side wall is provided with the activated carbon plate for adsorbing peculiar smell in gas, purification cylinder side wall is equipped with exhaust hole, exhaust hole is provided with exhaust pipe, and valve is installed on exhaust pipe.
[0006] Further, the exhaust component includes movable plate arranged in the fixed cylinder, the spring is arranged on the top of the movable plate and fixed in the top of the fixed cylinder, the self-resetting switch is installed on the bottom of the movable plate, the push plate is arranged below the self-resetting switch, the float ball is arranged below the push plate, the controller for receiving the signal of the self-resetting switch and controlling the opening and closing of the valve is installed on the top of the tank body, the self-resetting switch is electrically connected with the controller, and the controller is electrically connected with the valve.
[0007] Further, the purification cylinder opening faces upwards, and a sealing cover is threadedly connected to the purification cylinder opening.
[0008] Further, the diameter of the floating ball is smaller than the diameter of the inner wall of the fixed cylinder.
[0009] Further, the inner wall of the fixed cylinder is provided with two symmetrically distributed first sliding grooves, and a first sliding block is arranged in each first sliding groove in sliding cooperation with the first sliding groove and fixed to the side wall of the push plate.
[0010] Further, the inner and outer side walls of the purification cylinder are coated with photocatalyst paint.
[0011] Compared with the prior art, the food fermentation tank has the following beneficial effects:
[0012] The food fermentation tank of the present application has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 The present application is a structural schematic view;
[0014] Figure 2 The present application is a perspective view;
[0015] Figure 3 The present application is an exploded view;
[0016] Names of components in the drawing: 1, tank 2, feed pipe 3, floating ball 4, fixed cylinder 5, push plate 6, self-resetting switch 7, spring 8, movable plate 9, HEPA layer plate 10, sealing cover 11, activated carbon plate 12, valve 13, exhaust pipe 14, purification cylinder 15, connecting pipe 16, controller 17, first sliding block. DETAILED DESCRIPTION
[0017] The present application will be further described below by means of specific embodiments with reference to the accompanying drawings, but the present application should not be limited thereto, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
[0018] Embodiment 1
[0019] The food fermentation tank described in the present embodiment is like Figure 1 , Figure 2 and Figure 3As shown, including the tank body 1, the tank body 1 top opening has a mounting hole, the mounting hole is provided with a fixed cylinder 4 downward opening, the fixed cylinder 4 is provided with an exhaust assembly for discharging gas in the tank body 1, the fixed cylinder 4 side wall is provided with a purification cylinder 14, the purification cylinder 14 and the fixed cylinder 4 are connected through the connecting pipe 15, the purification cylinder 14 is provided with a HEPA layer plate 9 for removing the contaminated particles in the gas, the HEPA layer plate 9 side wall is provided with an activated carbon plate 11 for adsorbing the odor in the gas, the purification cylinder 14 side wall is provided with an exhaust hole, the exhaust hole is provided with an exhaust pipe 13, the exhaust pipe 13 is installed with a valve 12; the tank body 1 top is provided with a feed inlet, the feed inlet is provided with a feed pipe 2, the feed pipe 2 is threadedly connected with a cover body, the tank body 1 bottom is vertically provided with a plurality of support columns for supporting the tank body 1, the tank body 1 bottom is provided with a discharge outlet, the discharge outlet is provided with a discharge pipe, the discharge pipe is installed with a discharge valve; the tank body 1 is provided with a stirrer for breaking bubbles, accelerating and improving oxygen dissolution, and accelerating nutrient and heat transfer; the defoaming device is used for eliminating the foam generated in the fermentation process, preventing the foam overflow and increasing the bacterial infection opportunity; the ventilation system is responsible for introducing sterile air into the tank to meet the oxygen demand of the strain; the temperature control system maintains the appropriate temperature range in the tank by heating or cooling medium; in use, the food is added into the tank body 1 through the feed pipe 2, the cover body is covered to make the tank body 1 in a sealed state, the bubbles generated in the fermentation process of the food are broken and the food is stirred through the stirrer and the defoaming device, so that the fermentation is more uniform, when the food fermentation is completed, the discharge valve is opened, the fermented food is discharged from the discharge pipe, the tank body 1 inner wall is cleaned and disinfected for next use, the tank body 1 in the embodiment is prior art, the tank body 1 internal structure and principle are not improved in the application;
[0020] A fixed cylinder 4 is welded or glued into the mounting hole at the top of the tank 1. An exhaust assembly is installed inside the fixed cylinder 4, including a piston inside the fixed cylinder 4. A fixing hole is provided on the side wall of the fixed cylinder 4, and the air inlet end of the connecting pipe 15 is welded or glued into the fixing hole. The piston seals the air inlet end. A sliding plate is installed above the piston, and a spring is fixed to the top of the fixed cylinder 4 at the top of the sliding plate. One end of the spring is welded to the top of the fixed cylinder 4, and the other end is welded to the top of the sliding plate. In use, the piston normally seals the air inlet end of the connecting pipe 15, creating a sealed state inside the fixed cylinder 4. When the food inside the tank 1 ferments, the air inside the tank 1... Food fermentation produces gases such as carbon dioxide and ammonia, increasing the gas pressure inside tank 1. This increased pressure pushes the piston upward, which in turn pushes the sliding plate, compressing and deforming the spring. The piston then opens the inlet, allowing the gas inside tank 1 to pass through the fixed cylinder 4 and enter the connecting pipe 15, where it is discharged to the outside. After the gas is discharged, the gas pressure inside tank 1 decreases, and the spring, under its own elastic force, pushes the sliding plate downward. The sliding plate then pushes the piston downward, thus sealing the inlet of the connecting pipe 15 again. This re-seales the inside of tank 1, facilitating better fermentation of the food inside and preventing tank 1 from exploding due to high pressure.
[0021] The purification cylinder 14 has a connection hole on its side wall, and a gas outlet end of a connecting pipe 15 is welded or glued into the connection hole. The purification cylinder 14 is connected to the fixed cylinder 4 through the connecting pipe 15, and the fixed cylinder 4 is connected to the purification cylinder 14 through the connecting pipe 15. A HEPA filter plate 9 and an activated carbon plate 11 are installed inside the purification cylinder 14. The HEPA filter plate 9 is located near the gas outlet end of the connecting pipe 15. A gas outlet hole is opened on the side wall of the connecting pipe 15, and an exhaust pipe 13 is welded or glued into the exhaust hole. The connecting pipe 15 and the exhaust pipe 13 correspond to each other. The activated carbon plate 11 is located near the exhaust pipe 13. During use, the gas in the tank 1 enters the fixed cylinder 4, and then enters the purification cylinder 14 through the connecting pipe 15. The gas passes through the HEPA filter plate 9 and the activated carbon plate 11 in sequence. The HEPA filter plate 9 can significantly reduce the concentration of particulate matter in the fermentation environment, improve air quality, and thus ensure... Hygiene and safety of fermentation products; HEPA filter 9 achieves a filtration efficiency of over 99.7% for particles of 0.1 microns and 0.3 microns¹, meaning that harmful particles affecting the human body are reduced in the fermentation gas filtered by HEPA filter 9, lowering the risk to workers; the gas passing through HEPA filter 9 then passes through activated carbon plate 11, which has high adsorption capacity and can adsorb gaseous pollutants in the fermentation gas. After HEPA filter 9 removes particulate pollution, activated carbon plate 11 can further adsorb gaseous pollutants and odors in the gas, resulting in more comprehensive purification and providing a healthier air environment for workers; opening valve 12 allows the gas passing through activated carbon plate 11 to be discharged through the exhaust port of exhaust pipe 13, improving the gas purification effect.
[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the purification cylinder 14 has its opening facing upwards. A sealing cap 10 is threadedly connected to the opening of the purification cylinder 14. The outer side wall of the opening of the purification cylinder 14 is provided with external threads, and the inner side wall of the sealing cap 10 is provided with internal threads. The sealing cap 10 seals the purification cylinder 14 by means of the threaded engagement between the external threads and the internal threads. The sealing cap 10 also facilitates the replacement of the HEPA layer 9 and the activated carbon plate 11 inside the purification cylinder 14, ensuring the purification effect of both on the gas.
[0023] like Figure 1 , Figure 2 and Figure 3 As shown, both the inner and outer walls of the purification cylinder 14 are coated with photocatalytic coating. After the purification cylinder 14 is coated with photocatalyst, it can catalyze the decomposition of harmful substances in the gas under light irradiation, and can continuously purify the air around the cylinder 14. The photocatalyst can continuously decompose dirt, keeping the surface of the purification cylinder 14 clean. This reduces the frequency and difficulty of manual cleaning and improves the maintenance efficiency of the purification cylinder 14. The photocatalytic coating further decomposes the pollutants remaining after purification by the HEPA plate 9 and activated carbon plate 11 and sterilizes and deodorizes, which can significantly improve the effect and efficiency of gas purification, improve the gas purification effect, improve the quality of the atmospheric environment, and protect the health of the staff.
[0024] In actual use, after the food ferments in the tank 1 for a period of time, the gas in the tank 1 increases and the gas pressure increases. When the gas pressure increases, the gas in the tank 1 is forced through the exhaust component in the fixed cylinder 4 into the connecting pipe 15, and then into the purification cylinder 14. The HEPA plate 9 and activated carbon plate 11 in the purification cylinder 14 purify the particulate matter, gaseous pollutants and odors in the gas, and the purified gas is discharged through the exhaust pipe 13 to ensure a healthy atmospheric environment and avoid the gas from causing harm to the health of the staff.
[0025] Example 2
[0026] This embodiment further illustrates the technology, such as Figure 1 , Figure 2 and Figure 3As shown, the exhaust assembly includes a movable plate 8 disposed inside a fixed cylinder 4. A spring 7 is fixed to the top of the movable plate 8 and positioned within the top of the fixed cylinder 4. A self-resetting switch 6 is installed at the bottom of the movable plate 8. A push plate 5 is located below the self-resetting switch 6, and a float 3 is located below the push plate 5. A controller 16 is installed at the top of the tank body 1 to receive signals from the self-resetting switch 6 and control the opening and closing of the valve 12. The self-resetting switch 6 is electrically connected to the controller 16, and the controller 16 is electrically connected to the valve 12. The movable plate 8 is disposed inside the fixed cylinder 4, and a spring 7 is welded to the top of the movable plate 8. The top of the spring 7 is welded to the top of the fixed cylinder 4. A self-resetting switch 6 is installed below the movable plate 8. The self-resetting switch 6 is existing technology. Switch 6 includes a base and a button. Contact feet and support feet are fixed on the base. A stationary contact is fixed to the contact feet, and a moving contact corresponding to the stationary contact is fixed to the end of a metal elastic rocker, supported by the support feet. A steel ball at the bottom of the spring seat below the button presses against the metal elastic rocker, causing it to rotate around the support point, opening and closing the moving and stationary contacts. The raised end of the metal elastic rocker is equipped with a reset mechanism consisting of a reset bracket and a reset spring. The top of the reset spring abuts against the inner wall of the button, forming a two-position single-sided automatic reset, a three-position single-sided reset, or a three-position double-sided automatic reset switch. The button of the self-reset switch 6 faces downwards. When the button of the self-reset switch 6 is pressed, a short circuit occurs; releasing the button returns it to its initial state.
[0027] The self-reset switch 6 is electrically connected to the controller 16, and the controller 16 is electrically connected to the valve 12. The valve 12 can be a solenoid valve. During circuit design, it is necessary to ensure that the pins of the self-reset switch 6 (usually normally open, normally closed, and a common pin) can be correctly connected to the input interface of the controller 16. When the self-reset switch 6 is pressed or released, its internal contacts change (normally open becomes closed, or normally closed becomes open), generating an electrical signal. This signal is transmitted to the input interface of the controller 16 through the circuit. The input interface of the controller 16 detects this change in electrical signal and converts it into a signal form that the controller 16 can recognize. The controller 16 sends a command signal to the valve 12 through its output interface to control the opening and closing of the valve 12 to discharge gas. A push plate 5 is provided below the self-reset switch 6, and a float 3 is fixed to the bottom of the push plate 5. During use, when the gas in the tank 1 increases, the gas pressure increases, and the gas pressure pushes... The floating ball 3 moves upward, which drives the push plate 5 to move. The push plate 5 moves upward and presses the button of the self-reset switch 6. The push plate 5 pushes the self-reset switch 6, which in turn moves the movable plate 8 upward. After the button of the self-reset switch 6 is pressed, the self-reset switch 6 sends an electrical signal to the controller 16. The controller 16 receives the signal, processes it, and sends a signal to the valve 12 to open the valve 12. The gas in the tank 1 enters the fixed cylinder 4, enters the purification cylinder 14 through the connecting pipe 15, is purified, and is discharged through the exhaust pipe 13. When the gas in the tank 1 is discharged and the gas pressure decreases, the gas pushes the floating ball 3 less, and the floating ball 3 moves downward, which drives the push plate 5 to move downward. The push plate 5 releases the button of the self-reset switch 6, and the self-reset switch 6 sends a signal to the controller 16 again. After receiving the signal, the controller 16 processes it and sends a signal to the valve 12 to close the valve 12, so that the tank 1 is sealed again.
[0028] like Figure 1 and Figure 3 As shown, the diameter of the float 3 is smaller than the diameter of the inner wall of the fixed cylinder 4. There is a certain gap between the float 3 and the inner wall of the fixed cylinder 4, which allows the float 3 to move better inside the fixed cylinder 4. The fermentation gas in the tank 1 can also pass through the gap between the float 3 and the inner wall of the fixed cylinder 4, so that the gas can be discharged smoothly after purification.
[0029] like Figure 1 and Figure 3As shown, the inner wall of the fixed cylinder 4 has two symmetrically distributed first sliding grooves. A first slider 17 is provided in the first sliding groove and is fixed to the side wall of the push plate 5. The first slider 17 is provided in the two first sliding grooves in the inner wall of the fixed cylinder 4 and is welded or glued to the side wall of the push plate 5. Through the sliding cooperation of the first sliding groove and the first slider 17, the push plate 5 moves up and down more smoothly in the fixed cylinder 4, and can also prevent the push plate 5 and the float 3 from falling out of the fixed cylinder 4, ensuring its stability. Similarly, corresponding to the first sliding groove, two second sliding grooves are provided in the inner wall of the fixed cylinder 4. A second slider is provided in each of the second sliding grooves and is fixed to the side wall of the movable plate 8. When the push plate 5 releases the self-reset switch 6, the movable plate 8 is pushed down by the elastic force of the spring 7. The sliding cooperation of the second sliding groove and the second slider makes the up and down movement of the movable plate 8 more stable and also limits the position of the movable plate 8.
Claims
1. A food fermentation tank, comprising a tank body (1), characterized in that: The tank (1) has an installation hole at the top, and a fixed cylinder (4) with its opening facing downward is installed in the installation hole. An exhaust assembly for venting gas from the tank (1) is installed in the fixed cylinder (4). A purification cylinder (14) is installed on the side wall of the fixed cylinder (4). The purification cylinder (14) and the fixed cylinder (4) are connected and communicate with each other through a connecting pipe (15). A HEPA layer (9) for removing polluting particles from the gas is installed in the purification cylinder (14). An activated carbon plate (11) for adsorbing odors from the gas is installed on the side wall of the HEPA layer (9). An exhaust hole is opened on the side wall of the purification cylinder (14). An exhaust pipe (13) is installed at the exhaust hole. A valve (12) is installed on the exhaust pipe (13).
2. The food fermentation tank according to claim 1, characterized in that: The exhaust assembly includes a movable plate (8) disposed inside a fixed cylinder (4). A spring (7) fixed to the top of the movable plate (8) is provided at the top of the fixed cylinder (4). A self-resetting switch (6) is installed at the bottom of the movable plate (8). A push plate (5) is provided below the self-resetting switch (6). A float ball (3) is provided below the push plate (5). A controller (16) for receiving signals from the self-resetting switch (6) and controlling the opening and closing of the valve (12) is installed on the top of the tank body (1). The self-resetting switch (6) is electrically connected to the controller (16), and the controller (16) is electrically connected to the valve (12).
3. The food fermentation tank according to claim 1, characterized in that: The purification cylinder (14) has an upward-facing opening, and a sealing cap (10) is threadedly connected to the opening of the purification cylinder (14).
4. The food fermentation tank according to claim 2, characterized in that: The diameter of the float (3) is smaller than the inner diameter of the fixed cylinder (4).
5. The food fermentation tank according to claim 2, characterized in that: The inner wall of the fixed cylinder (4) is provided with two symmetrically distributed first sliding grooves, and a first slider (17) is provided in the first sliding groove to slide up and down and is fixed to the side wall of the push plate (5).
6. The food fermentation tank according to claim 1, characterized in that: The inner and outer walls of the purification cylinder (14) are coated with photocatalytic coating.