CN222024352U - Fermentation tank with uniform dissolved oxygen - Google Patents
Fermentation tank with uniform dissolved oxygen Download PDFInfo
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- CN222024352U CN222024352U CN202323578269.1U CN202323578269U CN222024352U CN 222024352 U CN222024352 U CN 222024352U CN 202323578269 U CN202323578269 U CN 202323578269U CN 222024352 U CN222024352 U CN 222024352U
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- oxygen
- fermentation tank
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- fermentation
- oxygen supply
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 143
- 239000001301 oxygen Substances 0.000 title claims abstract description 143
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 143
- 238000000855 fermentation Methods 0.000 title claims abstract description 142
- 230000004151 fermentation Effects 0.000 title claims abstract description 140
- 238000003756 stirring Methods 0.000 claims description 25
- 239000012530 fluid Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 21
- 239000007789 gas Substances 0.000 abstract description 7
- 238000004090 dissolution Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
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- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The utility model discloses a fermentation tank with uniform dissolved oxygen, which belongs to the technical field of fermentation tanks and comprises a fermentation tank, a vibrating screen, oxygen delivery blades and an air supply pipe, wherein the vibrating screen is stably and horizontally erected in the fermentation tank, the vibrating screen is provided with a vibrator, the oxygen delivery blades are internally hollow blades, the oxygen delivery blades are provided with a plurality of air outlet holes, the inner ends of the air supply pipes are in sealed rotary connection with the oxygen delivery blades through rotary joints, the rotatable oxygen delivery blades are increased, the fed oxygen is rotationally dispersed in fermentation broth through the rotation of the oxygen delivery blades, the oxygen can be more rapidly contacted with the fermentation broth, the oxygen can be more fully contacted with the fermentation broth through the rapid and uniform rotation of a large number of air outlet holes, the contact area of the gas and the fermentation broth is increased, the oxygen dissolution effect is better, the vibrating screen is also increased, large bubbles are intercepted, and ultrasonic vibration is further broken, so that the fermentation broth and the oxygen are fully mixed.
Description
Technical Field
The utility model relates to the technical field of fermentation tanks, in particular to a fermentation tank with uniform dissolved oxygen.
Background
Fermentation tank refers to an apparatus used industrially for carrying out microbial fermentation. The main body is a main cylinder made of stainless steel plates, and the volumes of the main cylinder are different. The fermenter needs to be of a tight construction. The fermenter needs to be resistant to steam sterilization, has certain operation elasticity, reduces internal accessories as much as possible (avoids dead angles), has strong material and energy transfer performance, can be adjusted to be convenient for cleaning and reduce pollution, and is suitable for production of various products and energy consumption reduction.
Fermentors are important fermentation equipment in fermentation processes, and the production conditions of the fermentation broth in the fermentors include temperature conditions, humidity conditions, oxygen supply and material conditions.
Wherein oxygen supply is an important difficulty in fermenters. Especially, more fermentation liquor is needed, and oxygen is needed to be continuously supplemented in the fermentation process, and the oxygen is needed to be uniformly fused in the fermentation liquor, so that the oxygen supply of the fermentation liquor in the whole fermentation liquor is ensured to be uniform, and the fermentation uniformity of the fermentation liquor is ensured.
Whether the oxygen supply of the fermentation liquid is uniform or not directly influences the fermentation effect, and the poor fermentation effect may influence the quality of the final product.
The existing equipment breaks the sprayed air in the vent pipe into small bubbles through the cooperation of the vent pipe and mechanical stirring, so that the contact area of gas and liquid phases is increased, the residence time of the bubbles in the liquid is prolonged, the gas-liquid mass transfer effect is increased, and the dissolution of oxygen in the fermentation liquid is promoted, so that the oxygen required by the growth and propagation of microorganisms is ensured. The bubbles from the outlet of the vent pipe are larger, a large part of gas passes through the fermentation liquor before being broken into small bubbles, the liquid overflows prematurely, the bubbles rise rapidly in the fermentation liquor, and the large bubbles are difficult to be fused into the fermentation liquor, so that the fermentation liquor is difficult to dissolve with oxygen uniformly, the bubbles are broken by beating only by means of stirring paddles of the fermentation liquor, but the rotating speed of the stirring paddles of the fermentation tank is generally lower, and the degree of breaking the bubbles by high-speed rotation cannot be achieved, so that the effect of dissolving oxygen in the fermentation liquor is poor.
Based on the above, the utility model designs a fermentation tank with uniform dissolved oxygen so as to solve the problems.
Disclosure of utility model
The utility model aims to provide a fermentation tank with uniform dissolved oxygen, which is provided with an oxygen feeding blade capable of rotating, the fed oxygen is rotationally dispersed in fermentation liquor through the rotation of the oxygen feeding blade, so that the oxygen can be more rapidly contacted with the fermentation liquor to uniformly supply oxygen to the fermentation liquor, and finer bubbles are rapidly and uniformly dispersed through a large number of air outlet holes to enable the oxygen to be more fully contacted with the fermentation liquor, so that the contact area of gas and the fermentation liquor is improved, the oxygen dissolving effect is better, a vibration net is further added, large bubbles are intercepted, and then ultrasonic vibration crushing is performed, so that the bubbles condensed in the stirring process of the fermentation liquor are intercepted and crushed again, and the fermentation liquor and the oxygen are fully mixed.
The utility model is realized in the following way: a fermentor with uniform dissolved oxygen comprising:
The device comprises a fermentation tank, a vibrating screen, an oxygen delivery blade and an air delivery pipe;
the fermentation tank is a closed tank body, a motor is arranged at the top of the fermentation tank, a stirring paddle is arranged in the fermentation tank and is connected with a driving shaft of the motor, and the driving shaft of the motor is vertically arranged in the fermentation tank;
The vibrating net is a net-shaped flat plate, the vibrating net is stably and horizontally erected in the fermentation tank, and the vibrating net is provided with a vibrator;
the blocking part which is not contacted with the vibration net is arranged right above the stirring paddle;
The oxygen delivery blade is a hollow fan blade, a plurality of air outlet holes are formed in the oxygen delivery blade, and a rotary joint is arranged at the bottom of the oxygen delivery blade; the oxygen delivery blade can rotate and is stably arranged at the bottom of the inner cavity of the fermentation tank;
The outer end of the air supply pipe is communicated with an external oxygen supply pipeline, an air valve is arranged on the air supply pipe, the inner end of the air supply pipe is inserted into the fermentation tank in a sealing way, and the inner end of the air supply pipe is connected with the inner cavity of the oxygen supply blade in a sealing way through a rotary joint;
The stirring paddle is arranged right above the oxygen delivery blade.
Further, the rotating shafts of the oxygen delivery blades are vertically arranged, the oxygen delivery blades are cross-flow blades, the air outlet holes of each oxygen delivery blade are formed in the anticlockwise side of the blade, and the aperture of each air outlet hole is not more than 1mm; the air outlet holes are formed in the bottom surface of the oxygen delivery blade;
The rotating direction of the oxygen delivering blade is clockwise, the air injection direction of the air outlet hole faces to the anticlockwise direction, and the direction of the fluid conveyed during the rotation of the oxygen delivering blade faces upwards.
Further, the air valve is arranged outside the fermentation tank;
The air supply pipe inside the fermentation tank is vertically erected, a plurality of fixing frames are arranged at the bottom of the inner cavity of the fermentation tank, and the air supply pipe at the inner end is vertically erected at the bottom of the inner cavity of the fermentation tank through the fixing frames.
Further, an avoidance hole is formed in the circle center of the vibration net, a driving shaft of the motor penetrates through the avoidance hole from top to bottom in a non-contact mode, and the driving shaft of the motor extends out of the lower portion of the vibration net;
The controller of the vibrator is arranged outside the fermentation tank, and the vibrator is an ultrasonic vibrator;
The vibrating screen is a stainless steel screen, and the diameter of the mesh of the vibrating screen is not more than 1mm.
The beneficial effects of the utility model are as follows: 1. according to the utility model, the oxygen delivering blade is connected through the rotary joint, so that the oxygen delivering blade can rotate in the fermentation tank, the air outlet hole is arranged at one side of the oxygen delivering blade, and when the air is discharged, the oxygen delivering blade automatically rotates, so that external oxygen is uniformly stirred in the fermentation tank, fermentation liquor and bubbles are more rapidly and uniformly mixed, the bubbles are not kept floating and continuously rotated, the aggregation speed of the bubbles is reduced, the contact time between the bubbles and the fermentation liquor is prolonged, and the dissolved oxygen effect of the fermentation liquor is better;
2. The vibration net is added to block large bubbles, and the bubbles intercepted below are vibrated and broken by the vibrator, so that the gathered bubbles float upwards after being broken again, the bubbles in the fermentation tank can be finer, the dissolved oxygen effect of the fermentation liquid is better, the vibration frequency is high, the vibration effect is good, the bubbles are dispersed more finely, the number of the bubbles is increased, and the dissolved oxygen effect is improved;
3. The stirring paddles are added, so that the fermentation broth can be continuously stirred and dispersed, fine bubbles can be stirred and dispersed more, the stirring paddles are positioned below the vibrating screen, bubbles collected below the vibrating screen can be stirred and dispersed, the fermentation broth and the bubbles are mixed more uniformly, and the dissolved oxygen effect is improved.
Drawings
The utility model will be further described with reference to examples of embodiments with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall internal structure of the present utility model;
FIG. 2 is a schematic top view of a vibrating screen according to the present utility model;
FIG. 3 is a schematic view of the bottom surface structure of the oxygen delivering blade of the present utility model;
FIG. 4 is a schematic side view of an oxygen delivery blade according to the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
the device comprises a 1-fermentation tank, a 11-motor, a 12-stirring paddle, a 2-vibrating screen, a 21-vibrator, a 22-avoiding hole, a 3-oxygen-feeding blade, a 31-air outlet hole, a 32-rotary joint, a 33-fixing frame, a 4-air feeding pipe and a 41-air valve.
Detailed Description
Referring to fig. 1 to 4, the present utility model provides a fermentation tank with uniform dissolved oxygen, and in order to better understand the above technical solution, the following detailed description will refer to the accompanying drawings and specific embodiments.
In a specific embodiment of the technical scheme of the utility model:
comprises a fermentation tank 1, a vibrating screen 2, an oxygen feeding blade 3 and an air feeding pipe 4;
The fermentation tank 1 is a closed tank body, the fermentation tank 1 belongs to a common device, a motor 11 is arranged at the top of the fermentation tank 1, a stirring paddle 12 is arranged in the fermentation tank 1, the stirring paddle 12 is connected with a driving shaft of the motor 11, and the driving shaft of the motor 11 is vertically arranged in the fermentation tank 1; the fermentation tank 1 is generally provided with a motor 11 for driving and a stirring paddle 12 for stirring and mixing fermentation liquor.
The vibrating screen 2 is a net-shaped flat plate, the vibrating screen 2 is stably and horizontally erected inside the fermentation tank 1, and the vibrating screen 2 is provided with a vibrator 21;
The non-contact stopper is directly above the stirring paddle 12; the circle center of the vibrating screen 2 is also provided with an avoidance hole 22, the vibrating screen 2 is not contacted with the driving shaft of the motor 11, the driving shaft of the motor 11 is vertically arranged, the driving shaft of the motor 11 passes through the avoidance hole 22 from top to bottom and is not contacted, and the driving shaft of the motor 11 extends out of the lower part of the vibrating screen 2; the stirring paddle 12 is convenient to disassemble and assemble, the maintenance can be facilitated, the vibrating screen 2 can be locked in the fermentation tank 1 through the lock catch, and can also be locked in the fermentation tank 1 through the hinge connection, so long as bubbles can be blocked in the fermentation tank 1 transversely and stably, the vibrating screen 2 is required to be a steel wire screen, the meshes are multiple and fine, and the vibrating screen is convenient to vibrate and crush the bubbles. The vibrating screen 2 is a stainless steel screen, and the diameter of the mesh of the vibrating screen 2 is not more than 1mm.
The controller of the vibrator 21 is arranged outside the fermentation tank 1, and the vibrator 21 is an ultrasonic vibrator; can high-frequency vibration, and vibrator 21 itself vibration amplitude is little again, and is little to equipment vibration influence, convenient to use, and a lot of fermentation cylinder are washd the fermentation cylinder with ultrasonic cleaning device moreover, and this device has used its vibration function, and it is broken with bubble secondary vibration, improves the contact duration of bubble and zymotic fluid, increases the quantity of bubble, slows down the speed of bubble gathering. Is beneficial to improving the oxygen dissolving effect of the fermentation liquor.
The oxygen delivering blade 3 is a hollow fan blade, so that a cavity is formed in the oxygen delivering blade 3, a plurality of air outlet holes 31 are formed in the oxygen delivering blade 3, and a rotary joint 32 is arranged at the bottom of the oxygen delivering blade 3; the oxygen delivering blade 3 can be rotatably and stably arranged at the bottom of the inner cavity of the fermentation tank 1; the rotating shafts of the oxygen delivery blades 3 are vertically arranged, the oxygen delivery blades 3 are cross-flow blades, the air outlet holes 31 of each oxygen delivery blade 3 are arranged on the anticlockwise side of the blade, and the aperture of each air outlet hole 31 is not more than 1mm; the air outlet hole 31 is arranged on the bottom surface of the oxygen delivery blade 3; allowing the sent bubbles to stay longer;
The rotation direction of the oxygen delivering blade 3 is clockwise, the air injecting direction of the air outlet hole 31 faces to the anticlockwise direction, and the direction of the fluid conveyed when the oxygen delivering blade 3 rotates is upward.
The oxygen delivering blade 3 is just the same as the blade of the fan, but the oxygen delivering blade 3 of the device also fans downwards, when external oxygen is delivered through the air delivery pipe 4, because the oxygen delivering blade 3 only has the air outlet hole 31 on one side, the oxygen delivering blade 3 rotates due to uneven stress, the oxygen delivering blade 3 rotates to push the fermentation liquor above downwards, and the air bubbles can also be pushed downwards, so that the air bubbles can remain in the fermentation liquor for a longer time as far as possible.
And after the bubbles are fanned downwards, the bubbles can also be quickly drifted upwards by buoyancy. Through the rotation of oxygen delivery blade 3, centrifugal force and downward thrust are produced for the bubble is stirred more evenly, thereby makes bubble and fermentation broth mix more evenly.
The outer end of the air supply pipe 4 is communicated with an external oxygen supply pipeline, an air valve 41 is arranged on the air supply pipe 4, the inner end of the air supply pipe 4 is inserted in the fermentation tank 1 in a sealing way, and the inner end of the air supply pipe 4 is connected with the inner cavity of the oxygen supply blade 3 in a sealing way through a rotary joint 32; the gas valve 41 is arranged outside the fermentation tank 1;
The air supply pipe 4 inside the fermentation tank 1 is vertically erected, a plurality of fixing frames 33 are arranged at the bottom of the inner cavity of the fermentation tank 1, and the air supply pipe 4 inside the fermentation tank 1 is stably and vertically erected at the bottom of the inner cavity of the fermentation tank 1 through the fixing frames 33.
The internal and external connection pipes of the fermentation tank 1 are in a conventional connection mode, and only the device supports the oxygen feeding blade 3 in the fermentation tank 1 through the air supply pipe 4 and is in rotary connection through the rotary joint 32, so that the oxygen feeding blade 3 and the air supply pipe 4 can relatively rotate, and the effect that the oxygen feeding blade 3 can stir bubbles is generated.
The stirring paddle 12 is disposed right above the oxygen supplying blade 3.
The rotary joint 32 is the same as a sealing rotary joint commonly used in industrial equipment, and is also commonly used in plant irrigation, a water pipe is connected below, and a water pipe above the joint is used for spraying water in a rotary mode, and the water pipe is the rotary joint 32 and belongs to a commonly used device and can rotate and communicate with a pipeline.
The rotary joint 32 of the device is connected with the oxygen feeding blade 3, oxygen can be filled into the cavity inside the oxygen feeding blade 3 through the air feeding pipe 4 and then through the rotary joint 32, then the air outlet hole 31 is formed in the anticlockwise side of the oxygen feeding blade 3, the air outlet hole 31 is not formed in the clockwise side, so that the oxygen feeding blade 3 can be pushed to rotate by pressurized oxygen, fermentation broth inside the fermentation tank 1 is stirred through the oxygen feeding blade 3, fermentation broth inside the fermentation tank 1 is continuously stirred and rotated, and therefore the device can also stir the fermentation broth in the fermentation tank 1 in the process of conveying oxygen to dissolve oxygen.
Compared with the prior art, the structure of the embodiment of the utility model has the following functions:
1. In the prior bubble conveying mode, bubbles are conveyed in a larger coverage range, namely the cross section area of the fermentation tank 1 is not large, the lifting space is not large, the bubbles of the fermentation tank 1 float upwards and are stirred by the stirring paddles 12 at most, so that the bubbles are uniform, but a large number of bubbles are mutually gathered into larger bubbles after meeting by stirring, the contact opportunity of the large bubbles and fermentation liquor is less, the dissolved oxygen effect is poor, the device changes the current situation, the stirring paddles 12 are placed above, the mixing process of the bubbles and the fermentation liquor is not disturbed as much as possible, the way that the oxygen feeding blades 3 rotate is used, the bubbles are continuously dispersed in the rotating process, the oxygen feeding blades 3 fan downwards, the floating difficulty of the bubbles is increased, the contact time of the bubbles and the fermentation liquor is also prolonged, and the dissolved oxygen effect of the fermentation liquor is improved; 2. the existing bubbles are vertical upwards, the upper bubbles are slowly raised by resistance, the lower bubbles are quickly followed along the upper bubbles, the vertical bubble floating mode can easily cause the aggregation of the bubbles into large bubbles, the mixing of the bubbles and fermentation broth is uneven, and the oxygen dissolving effect is poor; 3. when the existing fermentation tank 1 supplies air, the air is supplied, the air is dispersed as much as possible, the accumulated bubbles are not considered and method, oxygen floats upwards to be separated from fermentation liquor to form foam, foam accumulated above the fermentation liquor is required to be defoamed, defoaming operation is required when the dissolved oxygen effect is poor, the device intercepts large bubbles, vibration is provided for the vibration net 2 through the high-frequency ultrasonic vibrator 21, so that the large bubbles are subjected to high-frequency vibration crushing, the bubbles are cracked again in the fermentation liquor, secondary mixing is performed, oxygen is sequentially conveyed, the fermentation liquor and the bubbles are repeatedly mixed and stirred, the smaller the bubbles are, the more difficult the rising is, and the stay time of the bubbles in the fermentation liquor is further prolonged.
The technical problems solved by the utility model are as follows: based on the principle that the smaller the bubbles in the fermentation liquid are, the larger the rising difficulty is, the larger the contact area between the bubbles in unit volume and the fermentation liquid is, and the larger the dissolved oxygen rate in the liquid is, the device is provided with the oxygen feeding blades 3, can rotationally disperse the bubbles, also increases the repeated breaking bubbles of the vibrating screen 2, ensures that the bubbles and the fermentation liquid are fully mixed and stirred, and improves the dissolved oxygen effect of the fermentation liquid.
When the oxygen supplying device is used, oxygen is supplied to the air supply pipe 4 through an external oxygen supplying device which can be an oxygen pipeline or a gas bottle, the oxygen supply amount is controlled outside through the gas valve 41, the oxygen enters the inner cavity of the oxygen supplying blade 3 through the air supply pipe 4 through the rotary joint 32, the oxygen supplying blade 3 is externally closed and internally hollow, only a large number of air outlet holes 31 of the oxygen supplying blade 3 can ventilate, the oxygen is emitted into fermentation broth through the air outlet holes 31, only one anticlockwise side of the air outlet holes 31 of the oxygen supplying blade 3 is provided, so that the oxygen supplying blade 3 continuously rotates under oxygen supply, additional power is not needed, the bubbles are pushed to rotate, the bubbles are supplied to the fermentation tank 3 in a rotating mode of the oxygen supplying blade 3, the bubbles rise in a spiral path, the bubbles are not easy to overlap and gather, and the bubbles are dispersed more uniformly in a rotating mode.
Tiny bubbles are difficult to float up and can be uniformly suspended with fermentation broth, the aggregated bubbles become large, buoyancy becomes large and is easy to rise, the bubbles can be blocked by the vibrating screen 2, the vibrator 21 vibrates the vibrating screen 2 at high frequency, the bubbles are scattered again, the aggregated bubbles are dispersed again, the bubbles are suspended in the sub-fermentation broth again, the fermentation broth and the bubbles are uniformly mixed, the dissolved oxygen effect of the fermentation broth is effectively improved, and the design positions and the effects of the oxygen delivery blade 3 and the vibrating screen 2 of the device are complementary to each other, and the bubbles are more dispersed and tiny, so that the dissolved oxygen effect of the whole fermentation tank 1 is improved.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the utility model, and that equivalent modifications and variations of the utility model in light of the spirit of the utility model will be covered by the claims of the present utility model.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323578269.1U CN222024352U (en) | 2023-12-27 | 2023-12-27 | Fermentation tank with uniform dissolved oxygen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323578269.1U CN222024352U (en) | 2023-12-27 | 2023-12-27 | Fermentation tank with uniform dissolved oxygen |
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| Publication Number | Publication Date |
|---|---|
| CN222024352U true CN222024352U (en) | 2024-11-19 |
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ID=93443833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323578269.1U Active CN222024352U (en) | 2023-12-27 | 2023-12-27 | Fermentation tank with uniform dissolved oxygen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222024352U (en) |
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2023
- 2023-12-27 CN CN202323578269.1U patent/CN222024352U/en active Active
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