CN1431289A - Integral oxygen supply and agitation equip - Google Patents

Integral oxygen supply and agitation equip Download PDF

Info

Publication number
CN1431289A
CN1431289A CN 03104552 CN03104552A CN1431289A CN 1431289 A CN1431289 A CN 1431289A CN 03104552 CN03104552 CN 03104552 CN 03104552 A CN03104552 A CN 03104552A CN 1431289 A CN1431289 A CN 1431289A
Authority
CN
China
Prior art keywords
air
oxygen supply
stir shaft
spreading disk
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN 03104552
Other languages
Chinese (zh)
Other versions
CN1228435C (en
Inventor
王晓军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Luyide Biology Science and Technology Co Ltd.
Original Assignee
LUYIDE BIOLOGY SCIENCE AND TECHNOLOGY CO Ltd
LUYIDE BIOLOGY SCIENCE AND TEC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LUYIDE BIOLOGY SCIENCE AND TECHNOLOGY CO Ltd, LUYIDE BIOLOGY SCIENCE AND TEC filed Critical LUYIDE BIOLOGY SCIENCE AND TECHNOLOGY CO Ltd
Priority to CN 03104552 priority Critical patent/CN1228435C/en
Publication of CN1431289A publication Critical patent/CN1431289A/en
Application granted granted Critical
Publication of CN1228435C publication Critical patent/CN1228435C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M27/00Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02Stirrer or mobile mixing elements
    • C12M27/04Stirrer or mobile mixing elements with introduction of gas through the stirrer or mixing element
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/42Means for regulation, monitoring, measurement or control, e.g. flow regulation of agitation speed

Abstract

An integrated oxygen-supplying and stirring apparatus is composed of drive system, oxygen delivering system and stirring assemblage. Its advantages are synchronous oxygen supplying and stirring, simple structure, high efficiency and low energy consumption.

Description

Incorporate oxygen supply and whipping appts
Technical field
The present invention relates to the oxygen supply and the whipping appts of bio-reactor, especially a kind of device that integrates oxygen supply and agitating function.
Background technology
At the bio-reactor that is used for culturing cell, microorganism etc., oxygen supply breather and whipping appts always are core apparatus wherein, and the efficient of oxygen supply and stirring can directly have influence on success or failure, process and the time of cultivation.
According to traditional theory, in any aerobic fermentation device or bioreactor system, oxygen supply and stirring are two separate systems.Referring to Chinese patent 95113902.9 and 91217060.3.
Oxygen system generally is made up of air supply source, breather line, gas distributor.Common air supply source comprises: gas blower, air compressor, air/oxygen gas cylinder or oxygen generator; Gas distributor can be made different shapes such as tubulose or plate-like, according to the distribute production wells of different sizes of concrete needs.If the different modes according to ventilation oxygen-supplying is classified, use the oxygen system of these air supply sources all to belong to and be blown into the formula blow and vent system.The exemplary device that is blown into the formula ventilation oxygen-supplying as shown in Figure 1, oxygen/air enters gas distributor 2 by intake ducting 1, the production well from gas distributor enters nutrient solution then.
Stirring system is generally by electric motor 3, and transmission shaft 4 and stirring rake 5 are formed.According to different situations, can go up stirring to the top that stirring system is installed in bio-reactor, or the bottom that stirring rake is installed in bio-reactor is descended to stir.Except the last stirring and the difference of stirring down, the stirring system of different bio-reactors is difference to some extent on the shape of stirrer paddle wheel, number, size mainly, to be used for adapting to the fermentor tank and the bio-reactor of various objectives and kind.
The advantage of the traditional formula that is blown into oxygen system be the control of air demand and measure all than be easier to realize, process is simple; But,, often be difficult to satisfy actual needs, and production well stops up easily because the design of air inlet distribution apparatus has bigger difficulty; In addition, the pressure-losses of air supply source increases with the degree of depth of distribution device in tank body, and the trans-utilization rate of oxygen is lower.
In order to solve the above-mentioned defective that is blown into the formula oxygen system, U.S. slip-stick artist T.A.Rowand has developed the inhaling type oxygen system in nineteen twenty-seven, referring to United States Patent (USP) 1.726,125.Germany scientist Hubert Fuchs is used for the high-temperature aerobic fermentation system at the beginning of the seventies with this inhaling type oxygen system.The exemplary device of inhaling type oxygen system as shown in Figure 2, it directly draws air from atmosphere, not resembling to be blown into needs air supply source the formula system.Its principle of work is: impeller 9 is driven in the rotation of liquid high speed by electric motor 10, make liquid produce eddy current, thereby the regional area around impeller forms negative pressure.Under the promotion of external and internal pressure difference, air enters the nutrient solution through airway 11 outside fermentor tank.The air that is inhaled into forms small bubble under the relativity of impeller and liquid, be diffused in the liquid and go.After this, the multiple inhaling type apparatus of oxygen supply that grows up again on the basis of this technology is as United States Patent (USP) 2,609,189; 3,584,840; 3,796,417; 4,018,859; 5,013,490; Canadian Patent 2232581 and 2054044; French Patent 1474582.They are except structurally slightly variant, and action principle all is the same.
The advantage of inhaling type oxygen system is to have saved air supply source, has reduced topic between the installation that produced by air supply source and gas distribution system and maintenance.But the inhaling type oxygen system also has its limitation, is in particular in:
1) can only provide air in bio-reactor, when needing nutrient solution to have higher dissolved oxygen concentration, this device just is difficult to satisfy its needs;
2) be difficult for sterilization and the Netization that realization sucks gas, cause the nutrient solution pollution microbes easily;
3) the essential impeller that guarantees could form enough negative pressure to suck air more than certain rotating speed; But wheel speed at this moment often is difficult to reach the ideal mixing effect again;
4) selection of the shaped design of impeller and rotating speed is to be main purpose with air-breathing, may not satisfy design requirements and operational requirement to stirring;
5) airway of open type or impeller inlet pipe are easily stopped up in the part, cause the air inlet difficulty;
6) owing to be the plenum system of passive type, air input is measured with monitoring relatively more difficult, is unfavorable for the control of process.
Summary of the invention
The technological merit that the objective of the invention is to be blown into formula oxygen system and inhaling type oxygen system combines, overcome their technological deficiencies separately simultaneously, and oxygen system and stirring system are combined cleverly, make the structure of equipment compact more, reasonable, a kind of efficient, practical, integrated easily oxygen supply whipping appts of operating maintenance is provided.
The present invention will be blown into the formula oxygen system and stirring system unites two into one, and design incorporate oxygen supply whipping appts, and it is made up of transmission system, gas directing system and stirring rake assembly, and the two ends of gas directing system are connected with the stirring rake assembly with transmission system respectively.
Oxygen supply whipping appts by this design is made has the function of synchronous oxygen supply and stirring, and size and mixing speed that can the independent control air flow, has avoided the dependence of the efficiency of oxygen supply of inhaling type oxygen system to mixing speed.Exteriorly, integrated oxygen supply whipping appts is similar to common stirring system, but its internal structure and design then are very different.
1) transmission system
Transmission system can comprise electric motor, frame, axle sleeve.Axle sleeve links together motor shaft and stir shaft, can disassemble herein during maintenance.The function of transmission system is to provide stirring power to stir shaft.According to different needs, transmission system can be installed in the upper flange or the pot bottom of bio-reactor.
2) gas directing system
Gas directing system can comprise inlet pipe, air guiding base assembly and gas transmission stir shaft.The external port of inlet pipe is used for joining with steam line, the inner air chamber that feeds air guiding base.Stir shaft is the quill shaft that passes the air guiding base air chamber, and the part that its upper end links to each other with motor shaft is solid section.Stir shaft has an amount of air inlet port in the zone of passing the air guiding base air chamber, makes the gas in the air guiding base air chamber can enter its inner cavity, even in the stir shaft rotating process, gas also can be unimpeded.
The function of gas directing system is that the oxygen/air for the external world provides a passage to the stirring rake assembly, and with the stirring transmission of power of motor shaft to the stirring rake assembly.
3) stirring rake assembly
The stirring rake assembly can comprise tapered reinforcing cover, adapter sleeve, air-spreading disk and stirring rake composition.Adapter sleeve is socketed in the outside of gas transmission stir shaft one end, and its outside is fixed with tapered reinforcing cover, and this structure can make stirrer paddle be connected more firmly with stir shaft.The outer rim of tapered reinforcing cover is fixed with the stirrer paddle of suitable quantity.Air-spreading disk be positioned at tapered reinforcing cover below, and be fixed on the adapter sleeve of gas transmission stir shaft or its outside, outer rim is connected with stirrer paddle.
The function of stirring rake assembly is to make the oxygen/air in the gas transmission air guide shaft import fermentor tank equably with the form of microvesicle, and the kinetic energy that utilizes stir shaft to pass over simultaneously fully stirs the nutrient solution in the fermentor tank, satisfies the needs of cultivating.
The gas transmission stir shaft can have production well in the part that links to each other with air-spreading disk.
Air-spreading disk is a hollow structure, and its bottom can be made by the micropore rigid material.
The air-spreading disk outer rim can have aperture with the stirrer paddle connection.
Stirrer paddle can have aperture with air-spreading disk outer rim connection.
Stirrer paddle can be hollow structure, and the blade back is made by the micropore rigid material.
The principle of work of integrated oxygen supply whipping appts is as follows:
Oxygen/air enters the air chamber of air guiding base by inlet pipe, and the air inlet port through the gas transmission stir shaft enters air cavity in the gas transmission stir shaft again, arrive the other end after, enter the stirring rake assembly by production well.Because the back of the air-spreading disk of stirring rake assembly bottom and stirrer paddle forms by the micropore rigid material is special, the oxygen/air that enters the stirring rake assembly is infiltrated nutrient solution by the micropore at air-spreading disk bottom and stirrer paddle back with fine bubble form.
Rotate because stirring rake is made clockwise direction, the resistance that liquid produces mainly acts on the front of blade, i.e. upstream face (being made by light face rigid material); Then form parital vacuum between its back (face against the current) and the nutrient solution, the bottom of air-spreading disk also forms eddy current and causes parital vacuum owing to stirring rake rotatablely moves.Because gas is to enter nutrient solution in partial vacuum zone, the pressure-losses of having avoided water resistance and head pressure to cause, thus reduced requirement to air supply source pressure, reduced the energy consumption of air supply source.
This design can also improve efficiency of oxygen supply except the energy consumption that can reduce air supply source.Its principle is: the oxygen turnover ratio is directly proportional with dissolved oxygen, and the size of dissolved oxygen and bubble is inversely proportional to.In device of the present invention, special micropore permeation material is all adopted at the back of air-spreading disk bottom and stirrer paddle, and the aperture can make gas infiltrate nutrient solution with fine bubble less than 5 microns, has increased dissolved oxygen concentration.Secondly, from air-spreading disk bottom and the back of the stirrer paddle micro bubble that enters nutrient solution promptly be subjected to the bump in stirrer paddle front in the moment of contact liq, become finer little bubble, under the effect of constantly stirring, spread rapidly and dissolve in the liquid, so the more traditional oxygen delivery technique of the dissolved oxygen content of nutrient solution is higher.
Integrated oxygen supply whipping appts integrates oxygen supply and agitating function, compares with the traditional formula that is blown into and inhaling type oxygen system, and it has the following advantages:
1) simple in structure, the I﹠M maintenance is all easily convenient, can save the operation spending;
2) owing to adopt initiatively plenum system, air feed is reliable, is easy to monitoring and control;
3) there is multiple different air supply source mode available;
4) can realize the sterilization of source of the gas, impurity elimination is easy to realize;
5) low to the pressure requirement of air supply source, reduce energy consumption;
6) adopt the micropore air feed, can improve the dissolved oxygen content in the nutrient solution, the OTR height, and can reduce the oxygen supply energy consumption;
7) agitating function is not subjected to the restriction of air feed function, can satisfy multiple stirring needs.
Description of drawings
Fig. 1 is the exemplary device that is blown into the formula ventilation oxygen-supplying.
Fig. 2 is the exemplary device of inhaling type ventilation oxygen-supplying.
Fig. 3 is incorporate oxygen supply whipping appts.
Fig. 4 is the stirring rake assembly of incorporate oxygen supply whipping appts.
Embodiment
The following examples will be further explained the present invention, but the present invention is not limited only to these embodiment, the scope that these embodiment do not limit the present invention in any way.Some change that those skilled in the art is made within the scope of the claims and adjust also should be thought and belongs to scope of the present invention.
Embodiment 1
The present invention has designed the incorporate oxygen supply whipping appts of a cover, and it is made up of three parts, as shown in Figure 3.
1) transmission system
Transmission system is made up of electric motor 13, frame 14, axle sleeve 15.Axle sleeve 15 links together stir shaft 18 and motor shaft, can disassemble herein during maintenance.The function of transmission system provides stirring power.According to different needs, transmission system can be installed in the upper flange or the pot bottom of bio-reactor.
2) gas directing system
Gas directing system is made up of inlet pipe 16, air guiding base assembly 17 and gas transmission stir shaft 18.The external port of inlet pipe 16 is used for joining with steam line, the inner air chamber 20 that feeds air guiding base.Stir shaft 18 is for passing the quill shaft of air guiding base air chamber 20, and the part that its upper end links to each other with motor shaft is solid section, and another end also seals.Stir shaft has an amount of air inlet port 21 in the zone of passing the air guiding base air chamber, and just the gas in the air guiding base air chamber can enter its inner air cavity 22, even in the stir shaft rotating process, gas also can be unimpeded.The function of gas directing system is to provide a passage for the oxygen/air in the external world arrives stirring rake assembly 19, and with the stirring transmission of power of motor shaft to stirring rake assembly 19.
3) stirring rake assembly
As shown in Figure 4, stirring rake assembly 19 is made up of tapered reinforcing cover 40, adapter sleeve 41, air-spreading disk 42 and stirring rake.Adapter sleeve 41 is socketed in the outside of gas transmission stir shaft 18, and its outside is fixed with tapered reinforcing cover 40, and this structure can make stirrer paddle be connected more firmly with stir shaft.The outer rim of tapered reinforcing cover is fixed with the agitating vane of suitable quantity.Air-spreading disk 42 is hollow disks, is positioned at the bottom of tapered reinforcing cover 40, and is fixed on the adapter sleeve 41 of gas transmission stir shaft 18 or its outside, and its outer rim is connected with stirrer paddle, and the two forms gas passage all in the connecting place perforate.Special micropore stainless material is all adopted at the back of air-spreading disk bottom and stirrer paddle.Gas transmission stir shaft 18 has the production well 44 of suitable quantity in the part that links to each other with air-spreading disk 42, makes the gas in the gas transmission stir shaft can arrive stirrer paddle, and overflowing from the qi-emitting hole at stirrer paddle back 43 then enters nutrient solution.The micro bubble of nutrient solution promptly is subjected to the bump in stirrer paddle front 45 in the moment of contact liq, becomes more tiny bubble, spreads rapidly and dissolves in the liquid under the effect of constantly stirring.The function of stirring rake assembly is that an amount of oxygen/air is imported fermentor tank equably with the form of microvesicle, and the nutrient solution in the abundant stirred fermentor of the kinetic energy that utilizes stir shaft to pass over simultaneously satisfies the needs of cultivating.
When the incorporate oxygen supply whipping appts of specific design, and cultivate the different of purposes according to the size of bio-reactor, determine shape, number, area and the power of electric motor of suitable stirrer paddle.
According to principle of the present invention, the applicant has made the integrated oxygen supply whipping appts that is applicable to 1000 liters of fermentor tanks, and made a cover and adopted the tradition of the stirrer paddle of same pattern and area (450 square centimeters) to be blown into formula oxygen supply whipping appts, use their oxygen supplys in the nutrient solution of same high-temperature aerobic fermentation system then, the dissolved oxygen content that obtains is respectively compared, and experiment condition and result are as follows.
Experiment condition:
Nutrient solution composition: organic waste homogenate
Solid content in the nutrient solution: 10%
Nutrient solution volume: 1000 liters
Temperature of reaction: 65 ℃
Stirring velocity: 100 rev/mins
Air demand: 25 liters/minute
The air outlet is apart from level: 1.2 meters
The power configuration of two systems is as shown in table 1 with the dissolved oxygen content that records:
Integrated oxygen supply whipping appts is blown into formula oxygen supply whipping appts agitator motor power 1.5HP 1.5HP air feed pump power 0.09HP 2HP dissolved oxygen (mg/L) 5-7mg/L<1mg/L
As can be seen from Table 1, integrated oxygen supply whipping appts is low to the pressure requirement of air supply source, saves the air supply source energy consumption, and has increased dissolved oxygen content, and OTR is higher.

Claims (8)

1. incorporate oxygen supply and whipping appts is characterized in that, it is made up of transmission system, gas directing system and stirring rake assembly, and the two ends of gas directing system are connected with the stirring rake assembly with transmission system respectively.
2. incorporate oxygen supply according to claim 1 and whipping appts, it is characterized in that, described gas directing system comprises inlet pipe (16), air guiding base assembly (17) and gas transmission stir shaft (18), there is an air chamber (20) inside of air guiding base assembly, and there is an air guide air cavity (22) inside of gas transmission stir shaft; One end of inlet pipe exposes outside the air guiding base assembly, and the other end is communicated with the air chamber of air guiding base assembly inside, and the gas transmission stir shaft passes from air chamber, and has air inlet port (21) in the zone of passing the air guiding base air chamber.
3. incorporate oxygen supply according to claim 1 and whipping appts, it is characterized in that, described stirring rake assembly (19) comprises tapered reinforcing cover (40), adapter sleeve (41) air-spreading disk (42) and stirring rake, adapter sleeve is socketed in the outside of gas transmission stir shaft, the adapter sleeve outside is fixed with tapered reinforcing cover, the outer rim of tapered reinforcing cover is fixed with stirrer paddle, air-spreading disk be positioned at tapered reinforcing cover below, and be fixed on the adapter sleeve of gas transmission stir shaft or its outside, its outer rim is connected with stirrer paddle.
4. incorporate oxygen supply according to claim 3 and whipping appts is characterized in that, described gas transmission stir shaft has production well in the part that links to each other with air-spreading disk.
5. incorporate oxygen supply according to claim 3 and whipping appts is characterized in that, described air-spreading disk outer rim is having aperture with the stirrer paddle connection.
6. incorporate oxygen supply according to claim 3 and whipping appts is characterized in that, described stirrer paddle is having aperture with air-spreading disk outer rim connection.
7. according to claim 3,5,6 described incorporate oxygen supply and whipping apptss, it is characterized in that described stirrer paddle is a hollow structure, the blade back is made by the micropore rigid material.
8. according to claim 3,4,5,6 described incorporate oxygen supply and whipping apptss, it is characterized in that described air-spreading disk is a hollow structure, the air-spreading disk bottom is made by the micropore rigid material.
CN 03104552 2003-02-18 2003-02-18 Integral oxygen supply and agitation equip Expired - Fee Related CN1228435C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03104552 CN1228435C (en) 2003-02-18 2003-02-18 Integral oxygen supply and agitation equip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03104552 CN1228435C (en) 2003-02-18 2003-02-18 Integral oxygen supply and agitation equip

Publications (2)

Publication Number Publication Date
CN1431289A true CN1431289A (en) 2003-07-23
CN1228435C CN1228435C (en) 2005-11-23

Family

ID=4790061

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 03104552 Expired - Fee Related CN1228435C (en) 2003-02-18 2003-02-18 Integral oxygen supply and agitation equip

Country Status (1)

Country Link
CN (1) CN1228435C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105540593A (en) * 2015-12-31 2016-05-04 厦门大学 Boron removal method and device through activated slag agent
CN106047668A (en) * 2016-08-09 2016-10-26 峨眉山绿地生态农业开发有限公司 Microorganism culture tank inflating stirring structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105540593A (en) * 2015-12-31 2016-05-04 厦门大学 Boron removal method and device through activated slag agent
CN105540593B (en) * 2015-12-31 2017-12-19 厦门大学 A kind of slagging agent living removes the method and its device of boron
CN106047668A (en) * 2016-08-09 2016-10-26 峨眉山绿地生态农业开发有限公司 Microorganism culture tank inflating stirring structure

Also Published As

Publication number Publication date
CN1228435C (en) 2005-11-23

Similar Documents

Publication Publication Date Title
CN206407967U (en) A kind of rotary type efficient high intensity aeration waste water processing system
CN101322481B (en) Centrifugal type double-tube activating aeration oxygen increasing machine
CN100358996C (en) Semi-gas-lifting type jet aeration fermentation energy-saving device
CN1228435C (en) Integral oxygen supply and agitation equip
WO2020038302A1 (en) Rotary self-suction dish-shaped nano-bubble generating apparatus
CN201442884U (en) Super-gyromagnetic oxygenation and aeration machine
CN2890062Y (en) Swirl and inflation combined type biochemical reactor
CN214399990U (en) Stirring aerator
CN1090592C (en) Oxygen-gathering, activating and aerating oxygenating machine
CN101899392A (en) Internal circulation gas-lift type cell culture apparatus
CN2598999Y (en) Mixed stirring underwater aerator
CN101423301B (en) Submerged aerator with gas cylinder direct air-intake
CN108261932A (en) A kind of micro bubble generation device
CN202220166U (en) Self-suction type fruit vinegar fermentation tank
CN2279216Y (en) Column flotator energy-saving microfoam generator
CN208395175U (en) Outer tube bubble retention formula fermentor
CN207957920U (en) A kind of floatation type nanometer microbubble river and lake sewage-treatment plant
CN207016569U (en) A kind of mushroom head for being used to fluidize cyclic aeration device
CN205329028U (en) Gas -liquid mixture aeration equipment
CN2356029Y (en) Polyoxygen activation aeration oxygen automatic aerator
CN205695083U (en) A kind of fan blade aerator
CN2204803Y (en) Dual circulating aerating lifting fertilizing tank with mixing components
CN201109745Y (en) Hidden floating type aeration machine feeding air directly by air-guiding drum
CN2565814Y (en) Single blade push flow type low noise energy saving of aeration machine
CN2895405Y (en) Submersible aeration machine impeller

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
ASS Succession or assignment of patent right

Owner name: LVYIDE BIOLOGY SCIENCE CO., LTD.

Free format text: FORMER OWNER: WANG XIAOJUN

Effective date: 20030528

C41 Transfer of patent application or patent right or utility model
TA01 Transfer of patent application right

Effective date of registration: 20030528

Applicant after: Luyide Biology Science and Technology Co Ltd.

Applicant before: Wang Xiaojun

C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Shuyang green environmental protection technology Co., Ltd.

Assignor: Luyide Biology Science and Technology Co Ltd.

Contract fulfillment period: 2008.11.11 to 2023.2.17

Contract record no.: 2008990001305

Denomination of invention: Integral oxygen supply and agitation equip

Granted publication date: 20051123

License type: General permission

Record date: 2008.12.1

LIC Patent licence contract for exploitation submitted for record

Free format text: COMMON LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.11.11 TO 2023.2.17; CHANGE OF CONTRACT

Name of requester: SHUYANG LVYIDE ENVIRONMENTAL PROTECTION TECHNOLOGY

Effective date: 20081201

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20051123

Termination date: 20180218