Exhaust mechanism for microbial fermentation tank

Abstract

The utility model relates to the technical field of microbial fermentation tanks, in particular to an exhaust mechanism for a microbial fermentation tank, which comprises a fermentation tank and an exhaust pipeline fixed at the top of the fermentation tank, and an exhaust control mechanism for controlling the exhaust quantity is arranged in an inner cavity of the fermentation tank. According to the exhaust mechanism for the microbial fermentation tank, when the air pressure in the fermentation tank rises, an elastic diaphragm and a top block are pushed by the air pressure to move upwards to extrude a lifting block, so that the lifting block rises upwards to drive a lifting rod to compress a reset spring to move upwards, and then a movable sleeve is driven to move upwards through a connecting rod; when the pressure is reduced after the gas is exhausted, the reset spring pushes the lifting block to automatically reset, the fixed exhaust hole and the movable exhaust hole are driven to coincide, at the moment, the gas in the fermentation tank is output along the communication pipeline, the fixed exhaust hole and the movable exhaust hole, and the larger the internal pressure is, the larger the coincidence degree is; and the fixed exhaust hole and the movable exhaust hole are driven to be staggered for sealing.

Description

Technical Field

[0001] This utility model relates to the field of microbial fermentation tank technology, specifically to an exhaust mechanism for microbial fermentation tanks. Background Technology

[0002] Bio-fermentation refers to the process by which microorganisms, under suitable conditions, transform raw materials into products needed by humans through specific metabolic pathways. A fermenter is an industrial device used for microbial fermentation. Its main body is generally a cylindrical structure made of stainless steel. Care should be taken in its design and manufacturing to ensure a tight and rational structure. The fermenter is a key piece of equipment in the microbial production process.

[0003] Existing fermenters have certain problems in use. Microorganisms produce gas during fermentation, and the residual gas inside the fermenter can affect the overall gas pressure, causing the fermenter to malfunction. Generally, an exhaust pipe is installed on the tank, but when there is little fermentation gas inside the tank, the open exhaust pipe can allow external dust to enter the tank, affecting fermentation. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an exhaust mechanism for microbial fermenters, thus solving the aforementioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an exhaust mechanism for a microbial fermenter, comprising a fermenter and an exhaust pipe fixed to the top of the fermenter. The inner cavity of the fermenter is equipped with an exhaust control mechanism for controlling the exhaust volume. The exhaust control mechanism includes a cylinder fixed to the inner cavity of the fermenter. A lifting block is slidably connected to the inner cavity of the cylinder. A top block located below the lifting block is fixedly connected to the bottom of the cylinder via an elastic diaphragm. A lifting rod slidably connected to the inner cavity of the fermenter is fixedly connected to the top of the top block. The top end of the lifting rod penetrates and extends to the top of the fermenter. The lifting rod is fitted with a return spring, the two ends of which abut against the inner cavity of the fermentation tank and the top of the lifting block, respectively. The top of the fermentation tank is connected to a connecting pipe located in the inner cavity of the exhaust pipe. A movable sleeve is slidably connected to the surface of the connecting pipe. A connecting rod is fixedly connected to the surface of the lifting rod. A slot is opened on the side of the exhaust pipe that is movably connected to the connecting rod. The side of the movable sleeve is fixedly connected to the connecting rod. A fixed exhaust hole is opened on the surface of the connecting pipe. A movable exhaust hole is opened on the side of the movable sleeve that is located between the side wall of the exhaust pipe and the connecting pipe.

[0006] As a further embodiment of this utility model: two exhaust pipes are provided, which are symmetrically distributed on both sides of the lifting rod, so that exhaust can be discharged from both sides at the same time, resulting in better exhaust effect.

[0007] As a further embodiment of this utility model: the side of the movable sleeve is fixedly connected with an elastic sealing strip that is connected to the empty groove. By setting the elastic sealing strip, when the connecting rod drives the movable sleeve to move up and down, the connecting rod and the empty groove can be sealed to prevent outside air from entering the exhaust pipe from the side.

[0008] As a further aspect of this invention: the elastic diaphragm isolates the cylinder and the inner cavity of the fermenter, isolating the internal air. Only when the internal air pressure of the fermenter rises, the elastic diaphragm and the top block are pushed upward by the air pressure, squeezing the lifting block and causing it to rise. This causes the lifting rod to compress the reset spring and move upward, which then drives the movable sleeve to move upward through the connecting rod, causing the fixed exhaust port and the movable exhaust port to overlap. At this time, the gas inside the fermenter is output through the connecting pipe, the fixed exhaust port, and the movable exhaust port. The greater the internal pressure, the greater the overlap, and the gas is exhausted. When the pressure decreases after the gas is discharged, the reset spring pushes the lifting block to automatically reset, causing the fixed exhaust port and the movable exhaust port to be misaligned for sealing.

[0009] As a further aspect of this utility model: the movable sleeve and the connecting pipe are sealed by a sealing gasket, and exhaust can only be performed when the movable exhaust hole of the movable sleeve and the fixed exhaust hole of the connecting pipe coincide.

[0010] As a further embodiment of this invention, the exhaust pipe is bent downwards at both ends, which can effectively prevent dust in the air from falling directly into the fermentation tank.

[0011] Compared with the prior art, this utility model has the following advantages: When the gas pressure inside the fermenter rises, the elastic diaphragm and the top block are pushed upward by the gas pressure, squeezing the lifting block and causing it to rise. This causes the lifting rod to compress the reset spring and move upward. Then, through the connecting rod, the movable sleeve moves upward, causing the fixed exhaust port and the movable exhaust port to overlap. At this time, the gas inside the fermenter is output through the connecting pipe, the fixed exhaust port, and the movable exhaust port. The greater the internal pressure, the greater the overlap, and the gas is discharged. When the pressure decreases after the gas is discharged, the reset spring pushes the lifting block to automatically reset, causing the fixed exhaust port and the movable exhaust port to be staggered for sealing. Attached Figure Description

[0012] Figure 1 This is a partial structural schematic diagram of the present invention;

[0013] Figure 2 This utility model Figure 1 A magnified view of a section at point A in the middle;

[0014] Figure 3 This utility model Figure 1 A magnified view of a section at point B in the middle.

[0015] In the diagram: 1. Fermentation tank; 2. Exhaust pipe; 3. Cylinder; 4. Lifting block; 5. Elastic diaphragm; 6. Top block; 7. Lifting rod; 8. Movable exhaust port; 9. Connecting rod; 10. Empty groove; 11. Elastic sealing strip; 12. Movable sleeve; 13. Connecting pipe; 14. Fixed exhaust port; 15. Return spring. Detailed Implementation

[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0017] Please see Figure 1-3 This utility model provides a technical solution: an exhaust mechanism for a microbial fermenter, including a fermenter 1 and an exhaust pipe 2 fixed to the top of the fermenter 1. The inner cavity of the fermenter 1 is provided with an exhaust control mechanism for controlling the exhaust volume. The exhaust control mechanism includes a cylinder 3 fixed to the inner cavity of the fermenter 1. A lifting block 4 is slidably connected to the inner cavity of the cylinder 3. A top block 6 located below the lifting block 4 is fixedly connected to the bottom of the cylinder 3 via an elastic diaphragm 5. A lifting rod 7 slidably connected to the inner cavity of the fermenter 1 is fixedly connected to the top of the top block 6. The top end of the lifting rod 7 penetrates and extends to the top of the fermenter 1. A sleeve is fitted on the surface of the lifting rod 7. A return spring 15 is provided, with its two ends abutting against the inner cavity of the fermentation tank 1 and the top of the lifting block 4, respectively. The top of the fermentation tank 1 is connected to a connecting pipe 13 located in the inner cavity of the exhaust pipe 2. A movable sleeve 12 is slidably connected to the surface of the connecting pipe 13. A connecting rod 9 is fixedly connected to the surface of the lifting rod 7. A slot 10 is provided on the side of the exhaust pipe 2, which is movably connected to the connecting rod 9. The side of the movable sleeve 12 is fixedly connected to the connecting rod 9. A fixed exhaust hole 14 is provided on the surface of the connecting pipe 13. A movable exhaust hole 8 is provided on the side of the movable sleeve 12, located between the side wall of the exhaust pipe 2 and the connecting pipe 13.

[0018] There are two exhaust pipes 2, which are symmetrically distributed on both sides of the lifting rod 7, allowing for simultaneous exhaust from both sides and improving the exhaust effect.

[0019] The movable sleeve 12 is fixedly connected to an elastic sealing strip 11 that is connected to the empty groove 10. By setting the elastic sealing strip 11, when the connecting rod 9 drives the movable sleeve 12 to move up and down, it can seal the connection between the connecting rod 9 and the empty groove 10, preventing outside air from entering the exhaust pipe 2 from the side.

[0020] The elastic diaphragm 5 isolates the inner cavity of the cylinder 3 and the fermenter 1, preventing the air from entering. Only when the internal air pressure of the fermenter 1 rises, the elastic diaphragm 5 and the top block 6 are pushed upward by the air pressure, squeezing the lifting block 4 and causing it to rise. This causes the lifting rod 7 to compress the return spring 15 and move upward. Then, through the connecting rod 9, the movable sleeve 12 moves upward, causing the fixed exhaust port 14 and the movable exhaust port 8 to overlap. At this time, the gas inside the fermenter 1 is output through the connecting pipe 13, the fixed exhaust port 14, and the movable exhaust port 8. The greater the internal pressure, the greater the overlap, and the gas is exhausted. When the pressure decreases after the gas is discharged, the return spring 15 pushes the lifting block 4 to automatically reset, causing the fixed exhaust port 14 and the movable exhaust port 8 to be misaligned for sealing.

[0021] The movable sleeve 12 and the connecting pipe 13 are sealed by a sealing gasket. Exhaust can only be performed when the movable vent hole 8 of the movable sleeve 12 and the fixed vent hole 14 of the connecting pipe 13 coincide.

[0022] The exhaust pipe 2 is bent downwards at both ends, which can effectively prevent dust in the air from falling directly into the fermentation tank 1.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An exhaust system for a microbial fermenter, comprising a fermenter (1) and an exhaust pipe (2) fixed to the top of the fermenter (1), wherein the inner cavity of the fermenter (1) is provided with an exhaust control mechanism for controlling the exhaust volume, characterized in that: The exhaust control mechanism includes a cylinder (3) fixed inside the fermenter (1). A lifting block (4) is slidably connected to the inner cavity of the cylinder (3). A top block (6) located below the lifting block (4) is fixedly connected to the bottom of the cylinder (3) via an elastic diaphragm (5). A lifting rod (7) slidably connected to the top of the top block (6) is fixedly connected to the inner cavity of the fermenter (1). The top end of the lifting rod (7) extends through and above the fermenter (1). A return spring (15) is sleeved on the surface of the lifting rod (7). The two ends of the return spring (15) abut against the inner cavity of the fermenter (1) and the top of the lifting block (4), respectively. The top of the fermenter (1) is connected to a connecting pipe (13) located inside the exhaust pipe (2). A movable sleeve (12) is slidably connected to the surface of the connecting pipe (13). A connecting rod (9) is fixedly connected to the surface of the lifting rod (7). A slot (10) is provided on the side of the exhaust pipe (2) and is movably connected to the connecting rod (9). The side of the movable sleeve (12) is fixedly connected to the connecting rod (9). A fixed exhaust hole (14) is provided on the surface of the connecting pipe (13). A movable exhaust hole (8) is provided on the side of the movable sleeve (12) between the side wall of the exhaust pipe (2) and the connecting pipe (13).

2. The exhaust mechanism for a microbial fermenter according to claim 1, characterized in that: There are two exhaust pipes (2), which are symmetrically distributed on both sides of the lifting rod (7).

3. The exhaust mechanism for a microbial fermenter according to claim 1, characterized in that: The movable sleeve (12) is fixedly connected to an elastic sealing strip (11) that is connected to the empty groove (10).

4. The exhaust mechanism for a microbial fermenter according to claim 1, characterized in that: The elastic diaphragm (5) isolates the cylinder (3) from the inner cavity of the fermenter (1).

5. The exhaust mechanism for a microbial fermenter according to claim 1, characterized in that: The movable sleeve (12) and the connecting pipe (13) are dynamically sealed by a sealing gasket.

6. The exhaust mechanism for a microbial fermenter according to claim 1, characterized in that: The exhaust pipe (2) is bent downwards at both ends.

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