CN205710719U - Large fermentation tank agitating device - Google Patents
Large fermentation tank agitating device Download PDFInfo
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- CN205710719U CN205710719U CN201620294537.8U CN201620294537U CN205710719U CN 205710719 U CN205710719 U CN 205710719U CN 201620294537 U CN201620294537 U CN 201620294537U CN 205710719 U CN205710719 U CN 205710719U
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Abstract
This utility model provides a kind of large fermentation tank agitating device, including: the agitating device in tank body, tank body and control system, it is characterized in: agitating device includes central shaft and sharf, central shaft is vertically provided at the centre in tank body, rotary disk is set on central shaft, central shaft is driven motor to drive and drive described rotary disk to rotate by central shaft is dynamic, at least provided with two sharfs on rotary disk, stirring vane is set on sharf, sharf is driven by blade axis drive motor, makes described sharf also in rotation while revolving round the sun with described rotary disk.Control system is led to control centre's axle and is moved driving motor and the linkage of blade axis drive motor, rotating speed and sharf rotation direction, it is achieved the rotation of sharf and revolution, the blade on sharf be stirred the material in tank body.Fermentation liquid can be enable to be sufficiently stirred for, improve fermented quality, again can reduce stirring energy consumption, reduce tank base cross air filtering input electric power consumption.
Description
Technical field
This utility model relates to a kind of agitating device, is mainly used in pharmacy, food and Citric Acid Production, belongs to technical field of chemical, a kind of large fermentation tank agitating device.
Background technology
Large fermentation tank equipment is the equipment special provisioned in manufacturing enterprise's fermentation manufacturing technique such as pharmacy, food and citric acid, and large fermentation tank is the cylindrical vessel of a kind of vertical installation, and diameter can reach more than 6 meters, and height is to about 8 meters.The tank body tip designs of fermentation tank has charging aperture, tank wall to be designed with cooling tube, and tank interior is provided with agitator, and tank base is provided with filtration air inlet.During the fermentation, the most constantly being inputted in fermentation tank by the most filtered fresh air by mammoth pump machine, agitator stirs fermentation liquid continuously, makes all kinds of materials in fermentation liquid be sufficiently mixed, and tank body broth temperature everywhere is unified with concentration；The fresh air that the pot bottom pump machine of fermentation tank inputs is dispersed into minute bubbles, increases air-liquid contact area；The turbulent extent of forced fermentation liquid, reduces the thickness of liquid film around bubble and the resistance of the fluid in turbulent flow, thus improves the transfer rate of oxygen；Reducing mycelium clustering, reduce the liquid-film resistance around cell wall, beneficially thalline is to oxygen absorption, meanwhile, can get rid of " waste gas " and the metabolic activity of " refuse ", beneficially cell that cellular metabolism produces as early as possible.Therefore, agitating device plays very important effect to fermenting and producing.
At present, the agitating device of large fermentation tank is by being arranged on the driven by motor one at tank body top from tank bottoms to the shaft at top, being disposed with some groups of blades, belong to single shaft alr mode on the differing heights of shaft.Owing to large fermentation tank tank diameter is big, blade tactical diameter is the biggest, then stirring scope is the biggest, favourable for fermentation technology, but, owing to stirring resistance is directly proportional to leaf line velocity squared, along with the blade radius of gyration increases, stirring resistance is inevitable drastically to be strengthened, and energy consumption the most drastically strengthens, and mixing uniformity is the most impacted.Therefore, the blade radius of gyration can only limit to be chosen within the specific limits, chooses within the specific limits it practice, the most just make tank diameter to limit to, so, the traditional tank body shape seen at present substantially presents " tall and thin " type.Therefore, under conditions of certain tank volume, although relatively reduced tank diameter, increase tank body height and can reduce stirring resistance, but, due to tank base pressure and tank body height proportional, tank body height increase then tank base pressure increases, finally makes the tank base of requirement cross air filtering front pump acc power increase in direct ratio.For traditional large fermentation tank equipment, tank base is crossed air filtering input power of motor and is accounted for more than the 60% of sweat power consumption, is the biggest factor of sweat power consumption, and stirs power and account for total electricity consumption about 30%.Generally, diameter 6 meters, the large fermentation tank equipment of high 8 meters, cross air filtering pump machine and reach hundreds of kilowatts with overhead power of motor sum.
Along with the sustainable development of biochemical technology and biogenetic products demand is continuously increased, to the maximization of fermentation tank, energy-conservation with efficiently propose the highest requirement, at present, maximum normal formula fermenter volume has reached 380 cubic metres in the world.But, up to now, the emphasis of research energy-saving and cost-reducing to large-scale agitator tank, the condition premised on single shaft stirring that is based on carried out for high efficiency electric, the research and development of High Efficiency Energy-Saved Stirring blade, but, all do not obtain preferable effect.
Therefore, this is the technical barrier perplexing this area for a long time, and contradiction is solved the most well by the maximization of fermentation tank with energy-conservation this.
How to design a kind of large fermentation tank agitating device, fermentation liquid can be enable to be sufficiently stirred for, improve fermented quality, can reduce again stirring energy consumption, reduce tank base and cross air filtering input electric power consumption, this is the technical problem that current this area is urgently to be resolved hurrily.
Summary of the invention
This utility model is the problems referred to above that prior art exists, it is provided that a kind of large fermentation tank agitating device, and fermentation liquid can be enable to be sufficiently stirred for, and improves fermented quality, can reduce again stirring energy consumption, reduce tank base and cross air filtering input electric power consumption.
The purpose of this utility model is achieved through the following technical solutions:
A kind of large fermentation tank agitating device, including: tank body, agitating device in tank body and control system, it is characterized in that, described agitating device includes central shaft and sharf, described central shaft is vertically provided at the centre in tank body, on described central shaft, rotary disk is set, described central shaft is driven motor to drive and drive described rotary disk to rotate by central shaft is dynamic, at least provided with two described sharfs on described rotary disk, on described sharf, stirring vane is set, described sharf is driven by blade axis drive motor, make described sharf also in rotation while revolving round the sun with described rotary disk.
Improvement to technique scheme: the top of described tank body arranges a transmission bracket, arranges an electric machine support in transmission bracket, and described central shaft is dynamic drives motor and blade axis drive motor to be arranged on electric machine support；In transmission bracket, just position to tank body center arranges an inside and has the central shaft top chock of double-row roller bearing, a rotary axle box is had to be arranged between the double-row roller bearing of central shaft top chock, and the upper end of rotary axle box stretches out the upper end of central shaft top chock, tank interior one segment distance is stretched in the lower end of rotary axle box, described central shaft is arranged on the center of rotary axle box, the upper end of described central shaft is moved with central shaft and is driven the rotating shaft shaft coupling of motor to be connected, the lower end of described central shaft is arranged in central shaft sliding bearing, described central shaft sliding bearing is arranged on described tank body inner bottom part.
Further improvement to technique scheme: described rotary disk includes rotating disk last time and lower rotary disk, described central shaft top arranges rotating disk perpendicular described last time, described last time, rotating disk was positioned at below described rotary axle box, the bottom of described central shaft arranges perpendicular described lower rotary disk, described sharf is arranged between rotating disk described last time and lower rotary disk, each described sharf is equidistant with described central shaft and is evenly arranged, each described sharf sharf bearing block is arranged on rotating disk described last time, it is connected with sliding bearing between each described sharf with lower rotary disk.
Further improvement to technique scheme: the upper end of described sharf is provided with sharf profile of tooth belt wheel, profile of tooth belt wheel on a rotary axle box is installed in the upper end of described rotary axle box, a rotary axle box lower toothed belt wheel is installed in the lower end of rotary axle box, one blade axis drive motor profile of tooth belt wheel is set in the rotating shaft of blade axis drive motor, blade axis drive motor profile of tooth belt wheel is connected with cog belt between profile of tooth belt wheel with on rotary axle box, is connected with cog belt between rotary axle box lower toothed belt wheel and each profile of tooth belt wheel on sharf.
Further improvement to technique scheme: last time rotating disk and the top of tank body between single-revolution dish closing cap is set, described rotary disk closing cap is fixing on center shaft, rotating disk last time, sharf bearing block, sharf profile of tooth belt wheel and rotary axle box lower toothed belt wheel is enclosed in wherein.
Further improvement to technique scheme: the stirring vane on described sharf is respectively upper vane group, middle position vane group and the next vane group, blade in described upper vane group and the next vane group all uses high-efficiency axial flow stirring vane, described upper vane group is contrary with the next vane group arranged direction, described middle position vane group is arranged between described upper vane group and the next vane group, and described middle position vane group blade is recessed leaf radial-flow type stirring vane.
Further improvement to technique scheme: described central shaft is dynamic drives motor and blade axis drive motor to be threephase asynchronous machine, described control system includes that control centre's axle moves driving motor and sharf drives motor speed, the Programmable Logic Controller turned to and converter.
This utility model compared with prior art has the following advantages and good effect:
In this utility model tank body, agitating device includes a central shaft and some sharfs, rotary disk is set on central shaft, central shaft is driven motor to drive and drive rotary disk to rotate by central shaft is dynamic, at least provided with two described sharfs on rotary disk, stirring vane it is set on sharf and is driven by blade axis drive motor, making described sharf also in rotation while revolving round the sun with rotary disk.By the agitating function that combined with rotation that revolves round the sun, namely reach the purpose of overall stirring with multi-point partial stirring.Stirring vane radially and can be uniformly distributed tank body short transverse from tank body, fermentation liquid can be enable to be sufficiently stirred for, improve fermented quality, can reduce again stirring energy consumption.
The intended diameter scope of this utility model tank body is the most wide in range, under the conditions of the volume of certain tank body, can the diameter of enlarged relative tank body, reduce the height of tank body, proportional reduction tank interior fermentation liquid, for the pressure in tank body portion, is greatly lowered tank base and crosses air filtering front pump electro-mechanical force consumption.
This utility model is in use, by controlling sharf rotation and revolution, realize the linkage to two motors, speed controlling, sharf rotation direction etc. by the control system being made up of Programmable Logic Controller, converter etc. to control, the combining form of the multi-motion between sharf rotation and revolution and speed can be realized flexibly, such as high speed rotation is revolved round the sun with low speed, revolution clockwise and rotation counterclockwise, the combining form such as revolution and rotation clockwise clockwise.And, adjusting drive mechanism by each sharf, the sense of rotation between each sharf can be identical, it is also possible to different；Rotational velocity between each sharf can be identical, it is also possible to different, to meet production technology and energy-saving and cost-reducing requirement.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model large fermentation tank agitating device；
Fig. 2 is central shaft and the sharf horizontal layout schematic diagram in tank body of this utility model large fermentation tank agitating device.
Figure is numbered: 1-tank body, 2-transmission bracket, 2.1-electric machine support, 3-rotary disk closing cap, 4-blade axis drive motor, 5-blade axis drive motor profile of tooth belt wheel, profile of tooth belt wheel on 6-rotary axle box, 7-center axis drive motor, 8-central shaft top chock, 9-central shaft, 10-rotary axle box, 11-rotary axle box lower toothed belt wheel, 12-sharf profile of tooth belt wheel, 13-sharf bearing block, 14-rotating disk last time, the upper vane group of 15-, position vane group in 16-, 17-bottom vane group, rotary disk under 18-, 19-air-spreading disk support, 20-valve, 21-air-spreading disk, 22-sharf.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail:
See Fig. 1, Fig. 2, the embodiment of this utility model a kind of large fermentation tank agitating device, including: the agitating device in tank body 1 and tank body 1, agitating device includes central shaft 9 and sharf 22, the centre (central shaft 9 of the present embodiment is arranged on the centrage of tank body 1) that described central shaft 9 is vertically provided in tank body 1, central shaft 9 arranges rotary disk, central shaft 9 is driven motor 7 to drive and drive rotary disk to rotate by central shaft is dynamic, rotary disk is 4 sharfs 22 at least provided with two sharf 22(the present embodiment), sharf 22 arranges stirring vane, sharf 22 is driven by blade axis drive motor 4, make sharf 22 also in rotation while revolving round the sun with described rotary disk.
Specifically: arrange a transmission bracket 2 at the top of tank body 1, arranging an electric machine support 2.1 in transmission bracket 2, described central shaft is dynamic drives motor 7 and blade axis drive motor 4 to be arranged on electric machine support 2.1；In transmission bracket 2, just position to tank body 1 center arranges an inside and has the central shaft top chock 8 of double-row roller bearing, a rotary axle box 10 is had to be arranged between the double-row roller bearing of central shaft top chock 8, and the upper end of rotary axle box 10 stretches out the upper end of central shaft top chock 8, the internal segment distance of tank body 1 is stretched in the lower end of rotary axle box 10, described central shaft 9 is arranged on the center of rotary axle box 10, the upper end of described central shaft 9 is moved with central shaft and is driven the rotating shaft shaft coupling of motor 7 to be connected, the lower end of central shaft 9 is arranged in central shaft sliding bearing, central shaft sliding bearing is arranged on tank body 1 inner bottom part.
Above-mentioned rotary disk includes rotating disk last time 14 and lower rotary disk 18, rotating disk perpendicular last time 14 is set on central shaft 9 top, last time, rotating disk 14 was positioned at below described rotary axle box 10, the bottom of described central shaft 9 arranges perpendicular described lower rotary disk 18, described sharf 22 is arranged between rotating disk described last time 14 and lower rotary disk 18, each described sharf 22 is equidistant with described central shaft 9 and is evenly arranged, each described sharf 22 sharf bearing block 13 is arranged on rotating disk described last time 14, and each described sharf 22 is connected with sliding bearing between lower rotary disk 18.
The upper end of above-mentioned sharf 22 is provided with sharf profile of tooth belt wheel 12, profile of tooth belt wheel 6 on a rotary axle box is installed in the upper end of described rotary axle box 10, a rotary axle box lower toothed belt wheel 11 is installed in the lower end of rotary axle box 10, one blade axis drive motor profile of tooth belt wheel 5 is set in the rotating shaft of blade axis drive motor 4, blade axis drive motor profile of tooth belt wheel 5 is connected with cog belt between profile of tooth belt wheel 6 with on rotary axle box, is connected with cog belt between rotary axle box lower toothed belt wheel 11 and each profile of tooth belt wheel 12 on sharf 22.
Stirring vane on sharf 22 is respectively upper vane group 15, middle position vane group 16 and the next vane group 17, blade in above-mentioned upper vane group 15 and the next vane group 17 all uses high-efficiency axial flow stirring vane, above-mentioned upper vane group 15 is contrary with the next vane group 17 arranged direction, can form fermentation liquid upper and lower convection current during rotation.Middle position vane group 16 is arranged between upper vane group 15 and the next vane group 17, and middle position vane group 16 blade is recessed leaf radial-flow type stirring vane.When sharf 22 rotates, upper vane group 15 allows downward liquid flow, the next vane group 17 allow liquid flows upwards, formation facing to impact, when middle position vane group 16 rotates, to surrounding, liquid be expanded punching.
Last time rotating disk 14 and the top of tank body 1 between single-revolution dish closing cap 3 is set, described rotary disk closing cap 3 is fixed on central shaft 9, rotating disk last time 14, sharf bearing block 13, sharf profile of tooth belt wheel 12 and rotary axle box lower toothed belt wheel 11 is enclosed in wherein.
Air-spreading disk 21 is set at above-mentioned tank body 1 inner bottom part, air-spreading disk 21 arranges air-spreading disk support 19, at the centrally disposed above-mentioned central shaft sliding bearing of air-spreading disk support 19.Tank body 1 tip designs at fermentation tank has charging aperture, tank body 1 sidewall design to have cooling tube, filtration air inlet it is provided with bottom tank body 1, filtering, valve 20 is installed on air inlet, air filtering front pump machine was installed bottom tank body 1, by filtration air inlet to tank body 1 delivery of filtered air, valve 20 controlled the switch of air filtering.
Above-mentioned central shaft is dynamic drives motor 7 and blade axis drive motor 4 to be threephase asynchronous machine, and described control system includes that control centre's axle moves driving motor 7 and blade axis drive motor 4 rotating speed, the Programmable Logic Controller turned to and converter.
During work, owing to there is double-row roller bearing the inside of central shaft 9 top chock 8, therefore, central shaft 9 and rotary axle box 10 are all rotary, simply central shaft 9 is driven motor 7 to drive by central shaft is dynamic, and rotary axle box 10 is driven by profile of tooth belt wheel 6 on blade axis drive motor profile of tooth belt wheel 5 and rotary axle box and cog belt by blade axis drive motor 4.Central shaft 9 drives rotating disk last time 14 and lower rotary disk 18 to rotate around tank body 1 centrage, now, each sharf 22 is also revolving round the sun around tank body 1 centrage, simultaneously, each sharf 22 self is also rotating, and upper vane group 15 thereon, middle position vane group 16 and the next vane group 17 rotate around sharf 22.So, by the last time of rotating disk 14 and by the way of the revolution of lower rotary disk 18 combines with sharf 22 rotation, existing multi-point partial stirs, and has again overall stirring, enables the fermentation liquid in large fermentation tank to be sufficiently stirred for.This multi-point partial alr mode reduces the resistance of each shaft, makes stirring more abundant, also reduces stirring energy consumption.
This utility model is based on multi-shaft stirring, i.e. be arranged in parallel in tank body 1 inner space many sharfs 22, many sharfs 22 add the motion mode of rotation with revolution, with multiple spot, local stirring that position changes continuously, finally realize fermentation liquid entirety uniform stirring.Owing to using many sharfs 22 to stir, / to three/2nd of stirring vane size desirable conventional agitating blade diameter dimension, relation according to stirring vane diameter dimension with stirring resistance, under identical speed conditions, although stirring vane quantity adds, but always stirring energy consumption can reduce by 20% 30%.
Owing to using the many sharfs 22 that are arranged in parallel in tank body 1 inner space, the motion mode adding rotation with revolution completes agitating function, therefore, compares with single shaft alr mode, and tank body 1 intended diameter scope is the most wide in range.Under the conditions of the volume of certain tank body 1, can the diameter of enlarged relative tank body 1, reduce the height of tank body 1, the internal fermentation liquid of the most proportional reduction tank body 1 is for the pressure bottom tank body 1, tank body 1 profile can be in " short and stout " type, and proportional reducing crosses air filtering front pump electro-mechanical force consumption bottom tank body 1.As a example by present the most commonly used diameter 6 meters, the large fermentation tank equipment of high 8 meters, tank body 1 volume is about 226 cubic metres.If tank body 1 diameter is suitably amplified, it is designed as 7.5 meters, then tank body 1 is highly designed as 5 meters, the volume that can keep tank body 1 remains as 226 cubic metres, but, tank body 1 base pressure is then reduced to original 62.5%, reduces 37.5%, namely crosses air filtering front pump electro-mechanical force consumption bottom tank body 1 and reduces 37.5%.Therefore, by optimizing the diameter of tank body 1 and height dimension, splendid energy-saving effect can be obtained, substantially solve the maximization of fermentation tank with energy-conservation this to contradiction.
During the use of this utility model large fermentation tank agitating device, its control system moves the rotation direction driving motor 7 and the linkage of blade axis drive motor 4, rotating speed and central shaft 9 with sharf 22 by central shaft described in Programmable Logic Controller, Frequency Converter Control, realize rotation and the revolution of sharf 22, by the blade on each sharf 22, the material in tank body 1 is stirred, stir with multi-point partial, it is achieved the overall stirring in tank body 1.
The sense of rotation of sharf 22 can be identical with revolution direction, it is also possible to contrary；And, by adjusting the drive mechanism of each sharf 22, the sense of rotation between each sharf 22 can be identical, it is also possible to contrary；Rotation rotating speed between each sharf 22 can be identical, it is also possible to different；To meet production technology and energy-saving and cost-reducing requirement.General sharf 22 revolution speed is less than 10 revs/min, and sharf 22 rotational velocity is 100-200 rev/min.
Certainly, described above is not to restriction of the present utility model, and this utility model is also not limited to the example above; those skilled in the art; in essential scope of the present utility model, done change, retrofit, add or replace, also should belong to protection domain of the present utility model.
Claims (9)
1. a large fermentation tank agitating device, including: tank body, agitating device in tank body and control system, it is characterized in that, described agitating device includes central shaft and sharf, described central shaft is vertically provided at the centre in tank body, on described central shaft, rotary disk is set, described central shaft is driven motor to drive and drive described rotary disk to rotate by central shaft is dynamic, at least provided with two described sharfs on described rotary disk, on described sharf, stirring vane is set, described sharf is driven by blade axis drive motor, make described sharf also in rotation while revolving round the sun with described rotary disk.
2. according to the large fermentation tank agitating device described in claim 1, it is characterized in that, the top of described tank body arranges a transmission bracket, arranges an electric machine support in transmission bracket, and described central shaft is dynamic drives motor and blade axis drive motor to be arranged on electric machine support；In transmission bracket, just position to tank body center arranges an inside and has the central shaft top chock of double-row roller bearing, a rotary axle box is had to be arranged between the double-row roller bearing of central shaft top chock, and the upper end of rotary axle box stretches out the upper end of central shaft top chock, tank interior one segment distance is stretched in the lower end of rotary axle box, described central shaft is arranged on the center of rotary axle box, the upper end of described central shaft is moved with central shaft and is driven the rotating shaft shaft coupling of motor to be connected, the lower end of described central shaft is arranged in central shaft sliding bearing, described central shaft sliding bearing is arranged on described tank body inner bottom part.
3. according to the large fermentation tank agitating device described in claim 2, it is characterized in that, described rotary disk includes rotating disk last time and lower rotary disk, described central shaft top arranges rotating disk perpendicular described last time, described last time, rotating disk was positioned at below described rotary axle box, the bottom of described central shaft arranges perpendicular described lower rotary disk, described sharf is arranged between rotating disk described last time and lower rotary disk, each described sharf is equidistant with described central shaft and is evenly arranged, each described sharf sharf bearing block is arranged on rotating disk described last time, it is connected with sliding bearing between each described sharf with lower rotary disk.
4. according to the large fermentation tank agitating device described in Claims 2 or 3, it is characterized in that, the upper end of described sharf is provided with sharf profile of tooth belt wheel, profile of tooth belt wheel on a rotary axle box is installed in the upper end of described rotary axle box, a rotary axle box lower toothed belt wheel is installed in the lower end of rotary axle box, one blade axis drive motor profile of tooth belt wheel is set in the rotating shaft of blade axis drive motor, blade axis drive motor profile of tooth belt wheel is connected with cog belt between profile of tooth belt wheel with on rotary axle box, it is connected with cog belt between rotary axle box lower toothed belt wheel and each profile of tooth belt wheel on sharf.
5. according to the large fermentation tank agitating device described in claim 3, it is characterized in that, last time rotating disk and the top of tank body between single-revolution dish closing cap is set, described rotary disk closing cap is fixing on center shaft, rotating disk last time, sharf bearing block, sharf profile of tooth belt wheel and rotary axle box lower toothed belt wheel is enclosed in wherein.
6. according to the large fermentation tank agitating device described in any one of claim 1-3, it is characterized in that, stirring vane on described sharf is respectively upper vane group, middle position vane group and the next vane group, blade in described upper vane group and the next vane group all uses high-efficiency axial flow stirring vane, described upper vane group is contrary with the next vane group arranged direction, described middle position vane group is arranged between described upper vane group and the next vane group, and described middle position vane group blade is recessed leaf radial-flow type stirring vane.
7. according to the large fermentation tank agitating device described in claim 5, it is characterized in that, stirring vane on described sharf is respectively upper vane group, middle position vane group and the next vane group, blade in described upper vane group and the next vane group all uses high-efficiency axial flow stirring vane, described upper vane group is contrary with the next vane group arranged direction, described middle position vane group is arranged between described upper vane group and the next vane group, and described middle position vane group blade is recessed leaf radial-flow type stirring vane.
8. according to the large fermentation tank agitating device described in any one of claim 1-3, it is characterized in that, described central shaft is dynamic drives motor and blade axis drive motor to be threephase asynchronous machine, and described control system includes that control centre's axle moves driving motor and sharf drives motor speed, the Programmable Logic Controller turned to and converter.
9. according to the large fermentation tank agitating device described in claim 7, it is characterized in that, described central shaft is dynamic drives motor and blade axis drive motor to be threephase asynchronous machine, and described control system includes that control centre's axle moves driving motor and sharf drives motor speed, the Programmable Logic Controller turned to and converter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620294537.8U CN205710719U (en) | 2016-04-11 | 2016-04-11 | Large fermentation tank agitating device |
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| CN201620294537.8U CN205710719U (en) | 2016-04-11 | 2016-04-11 | Large fermentation tank agitating device |
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| CN205710719U true CN205710719U (en) | 2016-11-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105695305A (en) * | 2016-04-11 | 2016-06-22 | 吴文宇 | Large fermentation tank stirring device and stirring method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105695305A (en) * | 2016-04-11 | 2016-06-22 | 吴文宇 | Large fermentation tank stirring device and stirring method |
| CN105695305B (en) * | 2016-04-11 | 2018-06-08 | 吴文宇 | Large fermentation tank agitating device and stirring means |
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Granted publication date: 20161123 Termination date: 20180411 |