CN203238105U - Air supply type self-excited oscillation pulsed water jet aerator - Google Patents
Air supply type self-excited oscillation pulsed water jet aerator Download PDFInfo
- Publication number
- CN203238105U CN203238105U CN2013202135080U CN201320213508U CN203238105U CN 203238105 U CN203238105 U CN 203238105U CN 2013202135080 U CN2013202135080 U CN 2013202135080U CN 201320213508 U CN201320213508 U CN 201320213508U CN 203238105 U CN203238105 U CN 203238105U
- Authority
- CN
- China
- Prior art keywords
- self
- excited oscillation
- cavity
- oscillation cavity
- entrance
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The utility model discloses an air supply type self-excited oscillation pulsed water jet aerator which belongs to the technical field of environmental protection equipment, relates to an improvement of a self-excited oscillation pulsed water jet aerator structure for sewage treatment, is used for solving problems that a conventional jet aerator has high energy consumption and low air-liquid mixing efficiency and improves the oxygen supply efficiency. The jet aerator comprises a shell, wherein a water inlet cavity, a nozzle, an air suction cavity, an inlet tube of a self-excited oscillation cavity, the self-excited oscillation cavity, an outlet tube of the self-excited oscillation cavity and a diffusion cavity are sequentially arranged in the shell from one side end face to the other side end face of the shell, the inlet of the water inlet cavity is formed in one side end face of the shell, and the water inlet cavity is communicated with the nozzle; the nozzle is communicated with the air suction cavity, and the air suction cavity is communicated with the self-excited oscillation cavity through the inlet tube of the self-excited oscillation cavity; the self-excited oscillation cavity is communicated with the diffusion cavity through the outlet tube of the self-excited oscillation cavity, and the outlet of the diffusion cavity is formed in the other side end face of the shell; an air inlet is formed in the side wall of the shell and communicated with the air suction chamber.
Description
Technical field
The utility model belongs to the environmental protection equipment technical field, relates to a kind of improvement of self-excited oscillation pulsed water jet aerator structure of disposing of sewage, and particularly relates to a kind of Gas feeding self-excited oscillation pulsed water jet aerator.
Background technology
At present, in the main flow biochemical process treatment process of sewage disposal, aerator is main energy consumption equipment, and the power consumption of aerating system accounts for 50～70% of the whole power consumptions for the treatment of plant.Realize the aeration effect of aerator and reach simultaneously energy-saving and cost-reducing purpose, just become pendulum in a large common problem of industry member.
Aeration mode commonly used mainly contains three kinds of blast aeration, mechanical aeration and jet-flow aerations.The jet aerator that adopts the jet-flow aeration mode is a kind ofly to integrate air-breathing and aerator hybrid reaction, it aspirates gas by hydrofluidic and compresses, and utilize bubble diffusion and these two effects of hydraulic shear to reach the purpose of aeration and mixing, with traditional aerator relatively, have simple in structure, oxygenation capacity is high, energy consumption is low, take up an area and economize and the advantage such as initial cost is few.
Tradition jet aerator structure mainly is comprised of conical nozzle 1, induction chamber 2, trunnion 3, expansion section 4 and tail pipe 5 five parts as shown in Figure 1.Its principle of work is as follows: based on jet current principle, sewage sprays through conical nozzle 1 as power water, form a branch of random mobile fluid, induction chamber 2 interior static air in collision jet both sides also drive them and travel forward together, gas and power water are in trunnion 3 interior mixing, recover gradually pressure energy through expansion section 4, discharged by tail pipe 5.
Although the tradition jet aerator has many advantages than blast aeration and mechanical aeration, also has following shortcoming:
(1) small bubbles overflow from the water surface in the gathering of the neighboring area of expansion section outlet and formation air pocket easily, have reduced its mass transfer coefficient and oxygenation capacity; (2) adopt long mixing tube structure to increase the flowage friction of aeration fluid, reduced aerator dynamic efficiency, increased energy consumption; (3) mixing effect is limited, sometimes has to add agitator and promotes water body flow in the aeration tank to prevent the generation in dead band.
The people such as the Kang Yong of University Of Chongqing beacon are applied to traditional jet aerator with the theory of self-excited oscillation pulsed water jet, increased the expansion section 4 that self-sustained oscillation chamber 9 has replaced traditional jet aerator, structure comprises that mainly fluid drives nozzle 6, air suction pipe 7, mixing chamber 8, self-sustained oscillation chamber 9, impact walls 10 and diffuser tube 11 6 parts as shown in Figure 2.Its principle of work is as follows: motive fluid drives nozzle 6 ejections by fluid and forms jet, and the air in the mixing chamber 8 is carried by jet and enters self-sustained oscillation chamber 9, and mixing chamber 8 forms low pressure area, and air replenishes into mixing chamber 8 through air suction pipe 7; In self-sustained oscillation chamber 9, continuous and impact walls 10 bumps of gas-liquid two-phase contact surface, and under violent self-sustained oscillation effect, exchange fast, violent turbulent fluctuation and shearing occur in aerobic water body in the self-sustained oscillation shear field, improved the convection current diffusibility of water body, gas-liquid has been carried out sufficient mixing, and is simultaneously that the bubble shearing is less, forms micro-bubble; Well-mixed gas-liquid two-phase has reduced the possibility of bubble coalescence through the form ejection of diffuser tube 11 with pulse, and micro-bubble has prolonged the time that stops in water simultaneously, has namely prolonged the mass transfer time, has improved the transfer efficiency of oxygen.
Described self-excited oscillation pulsed water jet is to utilize hydrokinetics, fluid resonance, the elasticity of fluid and underwater acoustics principle to produce self-excited oscillation pulsed water jet.The advantage of self-excited oscillation pulsed water jet do not need to be the extrinsic motivated source, utilizes 9 structural changess of self-sustained oscillation chamber own just can reach the effect of pulsing jet, cavitation jet.That self-sustained oscillation chamber 9 has is simple in structure, volume is little, without the motion sealing, without adding drive unit and movable part and saving the particular advantages such as energy, make aerobic water body and air need not to produce the self-sustained oscillation effect under the condition of any utility appliance, make both that violent interaction occur, produce following effect:
(1) shear field of self-sustained oscillation formation is less with the bubble shearing, has increased the surface-area of bubble, has namely increased the contact area of gas-liquid two-phase contact surface;
(2) the gas-liquid two-phase contact surface carries out conversion fast under violent self-sustained oscillation effect, accelerated the renewal of liquid film on the liquid-vapo(u)r interface, violent turbulent fluctuation and shearing that the shear field brings have improved the convection current diffusibility of water body, and solution-air obtains to mix fully;
(3) impulse jet has improved pressure and the speed that stream, has improved the water body convection current ability in the aeration tank, has increased service area, has also reduced the possibility of bubble coalescence.
The people's such as Kang Yongfeng design only is based upon on the basis of experimental study, lacks the theory support of system, has the following disadvantages simultaneously: (1) adopts self-priming oxygen supply mode, the aeration demand in the time of can not satisfying high oxygenation capacity; (2) fluid drives nozzle more than 6 and adopts conical contraction structure, and angle of throat is 12.5 °～13.5 °, and shape is elongated, and it is larger to cause fluid to drive nozzle 6 inner fluid resistances, and energy consumption increases; (3) design is mainly based on experimental result, and the flow state of stream field inside lacks the details such as velocity distribution, pressure field, the design of equipment is lacked the theoretical analysis of system.
The utility model content
Problem for the prior art existence, the utility model provides a kind of Gas feeding self-excited oscillation pulsed water jet aerator, this aerator has solved high, poor, the inefficient problem of gas-liquid mixed of stirring property of existing jet aerator power consumption, has improved oxygen-transfer efficiency, is used for providing μ m level bubble at liquid.
To achieve these goals, the utility model adopts following technical scheme, a kind of Gas feeding self-excited oscillation pulsed water jet aerator, comprise housing, in housing, be disposed with intake antrum, nozzle, suction muffler, the self-excited oscillation cavity entrance trunnion, the self-excited oscillation cavity, the self-excited oscillation cavity outlet trunnion and diffusion chamber from a side end face to the opposite side end face of housing, the entrance of described intake antrum is arranged on the side end face of housing, and the outlet of intake antrum is connected with the entrance of nozzle; The outlet of nozzle is connected with the entrance of suction muffler, and the outlet of suction muffler is connected with the entrance of the self-excited oscillation cavity through the self-excited oscillation cavity entrance trunnion; The outlet of the self-excited oscillation cavity is connected with the entrance of diffusion chamber through the self-excited oscillation cavity outlet trunnion, and the outlet of diffusion chamber is arranged on the opposite side end face of housing; Be provided with gas inlet in housing sidewall, gas inlet is connected with suction muffler; Described the self-excited oscillation cavity inlet diameter and jet exit diameter proportion scope are 1.2～1.4, described the self-excited oscillation cavity exit diameter and jet exit diameter proportion scope are 1.3～1.6, described the self-excited oscillation cavity entrance to outlet distance is 2.8～3.0 with jet exit diameter proportion scope, described the self-excited oscillation cavity diameter and jet exit diameter proportion scope are 6～8, described the self-excited oscillation cavity entrance length of throat and jet exit diameter proportion scope are 1.4～1.7, described the self-excited oscillation cavity outlet length of throat and jet exit diameter proportion scope are 1.5～1.8, described the self-excited oscillation cavity exit cone angle scope is 110 °～120 °, described intake antrum diameter and jet exit diameter proportion scope are 1.2～1.4, described gas inlet diameter and jet exit diameter proportion scope are 2～3, described jet exit to the distance of the self-excited oscillation cavity entrance trunnion entrance is 1.5～2.0 with jet exit diameter proportion scope, described diffusion chamber length and jet exit diameter proportion scope are 2.0～4.0, described gas inlet axis place to the distance of the self-excited oscillation cavity entrance trunnion entrance is 2.0～3.0 with jet exit diameter proportion scope, described suction muffler exit cone angle scope is 50 °～70 °, and described diffusion chamber cone angle scope is 4 °～7 °; Described nozzle is that inner chamber is the nozzle that circular arc is shunk, and the size range of jet exit diameter is 20～40mm.
Described housing is cylindrical.
The beneficial effects of the utility model:
The utility model has solved high, poor, the inefficient problem of gas-liquid mixed of stirring property of existing jet aerator power consumption, has improved oxygen-transfer efficiency, is used for providing μ m level bubble at liquid.The utility model is applicable to the wastewater treatment that the depth of water is 5～9m, and oxygen transfer efficiency reaches 35%～42%, and gas-water ratio reaches 4:1.Specific features is as follows:
(1) the utility model adopts the self-excited oscillation cavity to replace expansion section and the tail pipe of traditional jet aerator, rely on the self-sustained oscillation effect, gas-liquid mixing liquid carries out repeatedly violent shearing, make air and the aerobic water body of suction in the self-excited oscillation cavity, obtain abundant Agitation and mixing, the renewal speed of liquid film on the gas-liquid two-phase contact surface when having accelerated aeration, form μ m level micro-bubble, and then increase the contact area of supporting water body and air;
(2) the gas-liquid mixing liquid in the utility model discharges by diffusion chamber with pulse mode, has stronger pulse effects from the aerobic water body of diffusion chamber ejection, improve the outlet surging force of fluid, and then improved the mixing effect of jet aerator, increased service area.
Description of drawings
Fig. 1 is the structural representation of traditional jet aerator;
Fig. 2 is the structural representation of existing Self-Suction Self-Excited Oscillation Pulsed Jet Aerator;
Fig. 3 is the structural representation of Gas feeding self-excited oscillation pulsed water jet aerator of the present utility model;
Fig. 4 is the sectional view of Fig. 3;
Among the figure, 1--conical nozzle, 2--induction chamber, 3--trunnion, the 4--expansion section, the 5--tail pipe, the 6--fluid drives nozzle, 7-air suction pipe, the 8--mixing chamber, 9--self-sustained oscillation chamber, 10--impact walls, 11--diffuser tube, the 12--intake antrum, 13--nozzle, 14--gas inlet, the 15--suction muffler, 16--the self-excited oscillation cavity, 17--diffusion chamber, the 18--housing, 19--the self-excited oscillation cavity entrance trunnion, 20--the self-excited oscillation cavity outlet trunnion;
D--jet exit diameter, dL--intake antrum diameter, dg--gas inlet diameter, d1--the self-excited oscillation cavity inlet diameter, d2--the self-excited oscillation cavity exit diameter, DT--the self-excited oscillation cavity diameter, L--the self-excited oscillation cavity entrance is to exporting distance, and the L1--jet exit is to the distance of the self-excited oscillation cavity entrance trunnion entrance, L2--the self-excited oscillation cavity entrance length of throat, L3--the self-excited oscillation cavity outlet length of throat, L4--diffusion chamber length, L5--gas inlet axis place is to the distance of the self-excited oscillation cavity entrance trunnion entrance, α--suction muffler exit cone angle, β--the self-excited oscillation cavity exit cone angle, θ--diffusion chamber cone angle.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 3, Figure 4, a kind of Gas feeding self-excited oscillation pulsed water jet aerator, comprise housing 18, in housing 18, be disposed with intake antrum 12, nozzle 13, suction muffler 15, the self-excited oscillation cavity entrance trunnion 19, the self-excited oscillation cavity 16, the self-excited oscillation cavity outlet trunnion 20 and diffusion chamber 17 from a side end face to the opposite side end face of housing 18, the entrance of described intake antrum 12 is arranged on the side end face of housing 18, and the outlet of intake antrum 12 is connected with the entrance of nozzle 13; The outlet of nozzle 13 is connected with the entrance of suction muffler 15, and the outlet of suction muffler 15 is connected with the entrance of the self-excited oscillation cavity 16 through the self-excited oscillation cavity entrance trunnion 19; The outlet of the self-excited oscillation cavity 16 is connected with the entrance of diffusion chamber 17 through the self-excited oscillation cavity outlet trunnion 20, and the outlet of diffusion chamber 17 is arranged on the opposite side end face of housing 18; Be provided with gas inlet 14 at housing 18 sidewalls, gas inlet 14 is connected with suction muffler 15; Described the self-excited oscillation cavity inlet diameter d1 and jet exit diameter d ratio are 1.2, described the self-excited oscillation cavity exit diameter d2 and jet exit diameter d ratio are 1.3, described the self-excited oscillation cavity entrance is to exporting distance L and jet exit diameter d ratio is 2.8, described the self-excited oscillation cavity diameter DT and jet exit diameter d ratio are 6, described the self-excited oscillation cavity entrance length of throat L2 and jet exit diameter d ratio are 1.5, described the self-excited oscillation cavity outlet length of throat L3 and jet exit diameter d ratio are 1.6, described the self-excited oscillation cavity exit cone angle beta is 110 °, described intake antrum diameter d L and jet exit diameter d ratio are 1.2, described gas inlet diameter d g and jet exit diameter d ratio are 2, described jet exit to the distance L 1 of the self-excited oscillation cavity entrance trunnion entrance is 1.5 with jet exit diameter d ratio, described diffusion chamber length L 4 is 3.0 with jet exit diameter d ratio, described gas inlet axis place to the distance L 5 of the self-excited oscillation cavity entrance trunnion entrance is 2.0 with jet exit diameter d ratio, described suction muffler exit cone angle is 60 °, and described diffusion chamber taper angle theta is 6 °; Described nozzle 13 is the nozzle 13 that circular arc is shunk for inner chamber, and the jet exit diameter d is of a size of 20, in order to reduce fluid through the drag losses of nozzle 13 and avoid nozzle 13 to stop up.
Described housing 18 is cylindrical, so that on-the-spot the installation.
Below in conjunction with a description of drawings use procedure of the present utility model:
As shown in Figure 3, Figure 4, before using gas inlet 14 of the present utility model is connected with Fan pipeline, by the gas blower air feed, can adjusts as required oxygen-supplying amount, improved equipment coefficient of oxygen utilization and dynamic efficiency; Intake antrum 12 is connected with waste pipe, is driven by impeller pump.The inlet pressure of the utility model intake antrum 12 is 0.1～0.2MPa(gauge pressure), gas inlet 14 pressure are 0.05～0.15MPa(gauge pressure).
Sewage enters into nozzle 13 formation jets through the entrance of intake antrum 12, the air that is provided by gas blower enters into suction muffler 15 from gas inlet 14, jet carries suction muffler 15 interior air near jet and enters the self-excited oscillation cavity 16, and suction muffler 15 forms low pressure area, and the barotropic gas at gas inlet 14 places replenishes into suction muffler 15; In the self-excited oscillation cavity 16, gas-liquid two-phase exchanges under violent self-sustained oscillation effect fast, and violent turbulent fluctuation and shearing occur in the self-sustained oscillation shear field aerobic water body, and gas-liquid has been carried out sufficient mixing, simultaneously that the bubble shearing is less, form μ m level bubble; Well-mixed gas-liquid two-phase sprays through the form of diffusion chamber 17 with pulse with the form of micro-bubble, reduced the possibility of bubble coalescence, micro-bubble has prolonged the time that stops in water simultaneously, namely prolonged the mass transfer time, improved the transfer efficiency of oxygen, through the reality test, oxygen transfer efficiency can reach more than 37%.
Under the effect of entrainmenting of the self-excited oscillation cavity 16 entrance jets, by the pulsation storing energy of jet boundary, make fluid produce periodically pulsing in the self-excited oscillation cavity 16 of the present utility model, ripple frequency f relational expression is:
In the formula, a is local velocity of sound, and unit is m/s; A is the nozzle entrance sectional area, and unit is m
2V is the nozzle chamber volume, and unit is m
3L be the self-excited oscillation cavity entrance to exporting distance, unit is m.
Claims (2)
1. Gas feeding self-excited oscillation pulsed water jet aerator, it is characterized in that comprising housing, in housing, be disposed with intake antrum, nozzle, suction muffler, the self-excited oscillation cavity entrance trunnion, the self-excited oscillation cavity, the self-excited oscillation cavity outlet trunnion and diffusion chamber from a side end face to the opposite side end face of housing, the entrance of described intake antrum is arranged on the side end face of housing, and the outlet of intake antrum is connected with the entrance of nozzle; The outlet of nozzle is connected with the entrance of suction muffler, and the outlet of suction muffler is connected with the entrance of the self-excited oscillation cavity through the self-excited oscillation cavity entrance trunnion; The outlet of the self-excited oscillation cavity is connected with the entrance of diffusion chamber through the self-excited oscillation cavity outlet trunnion, and the outlet of diffusion chamber is arranged on the opposite side end face of housing; Be provided with gas inlet in housing sidewall, gas inlet is connected with suction muffler; Described the self-excited oscillation cavity inlet diameter and jet exit diameter proportion scope are 1.2～1.4, described the self-excited oscillation cavity exit diameter and jet exit diameter proportion scope are 1.3～1.6, described the self-excited oscillation cavity entrance to outlet distance is 2.8～3.0 with jet exit diameter proportion scope, described the self-excited oscillation cavity diameter and jet exit diameter proportion scope are 6～8, described the self-excited oscillation cavity entrance length of throat and jet exit diameter proportion scope are 1.4～1.7, described the self-excited oscillation cavity outlet length of throat and jet exit diameter proportion scope are 1.5～1.8, described the self-excited oscillation cavity exit cone angle scope is 110 °～120 °, described intake antrum diameter and jet exit diameter proportion scope are 1.2～1.4, described gas inlet diameter and jet exit diameter proportion scope are 2～3, described jet exit to the distance of the self-excited oscillation cavity entrance trunnion entrance is 1.5～2.0 with jet exit diameter proportion scope, described diffusion chamber length and jet exit diameter proportion scope are 2.0～4.0, described gas inlet axis place to the distance of the self-excited oscillation cavity entrance trunnion entrance is 2.0～3.0 with jet exit diameter proportion scope, described suction muffler exit cone angle scope is 50 °～70 °, and described diffusion chamber cone angle scope is 4 °～7 °; Described nozzle is that inner chamber is the nozzle that circular arc is shunk, and the size range of jet exit diameter is 20～40mm.
2. Gas feeding self-excited oscillation pulsed water jet aerator according to claim 1 is characterized in that described housing is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202135080U CN203238105U (en) | 2013-04-25 | 2013-04-25 | Air supply type self-excited oscillation pulsed water jet aerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202135080U CN203238105U (en) | 2013-04-25 | 2013-04-25 | Air supply type self-excited oscillation pulsed water jet aerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203238105U true CN203238105U (en) | 2013-10-16 |
Family
ID=49315424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202135080U Expired - Lifetime CN203238105U (en) | 2013-04-25 | 2013-04-25 | Air supply type self-excited oscillation pulsed water jet aerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203238105U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224296A (en) * | 2013-04-25 | 2013-07-31 | 辽阳博仕流体设备有限公司 | Air-supply-type self-excited oscillation pulse jet aerator |
| CN106186384A (en) * | 2016-09-14 | 2016-12-07 | 湖南省水利水电科学研究所 | From pressure air-breathing oxygen supplement adjutage |
| CN107082283A (en) * | 2017-05-10 | 2017-08-22 | 中国矿业大学 | A kind of self-excited oscillation type pulse eddy flow booster |
| CN109967429A (en) * | 2019-03-30 | 2019-07-05 | 山东大学 | One kind being used for the clean integrated device of medical instrument heating disinfection |
| CN114100435A (en) * | 2021-11-05 | 2022-03-01 | 中国建筑第五工程局有限公司 | Integrated earth pressure balance shield original state muck resource treatment production line |
| CN114130461A (en) * | 2021-11-05 | 2022-03-04 | 中国建筑第五工程局有限公司 | Roller cleaning and cavity cleaning system of viscous shield muck crushing and refining equipment |
| CN114100435B (en) * | 2021-11-05 | 2024-04-16 | 中国建筑第五工程局有限公司 | Integrated soil pressure balance shield undisturbed residue soil recycling treatment production line |
-
2013
- 2013-04-25 CN CN2013202135080U patent/CN203238105U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224296A (en) * | 2013-04-25 | 2013-07-31 | 辽阳博仕流体设备有限公司 | Air-supply-type self-excited oscillation pulse jet aerator |
| CN103224296B (en) * | 2013-04-25 | 2015-01-07 | 辽阳博仕流体设备有限公司 | Air-supply-type self-excited oscillation pulse jet aerator |
| CN106186384A (en) * | 2016-09-14 | 2016-12-07 | 湖南省水利水电科学研究所 | From pressure air-breathing oxygen supplement adjutage |
| CN107082283A (en) * | 2017-05-10 | 2017-08-22 | 中国矿业大学 | A kind of self-excited oscillation type pulse eddy flow booster |
| CN107082283B (en) * | 2017-05-10 | 2019-10-11 | 中国矿业大学 | A kind of self-excited oscillation type pulse eddy flow booster |
| CN109967429A (en) * | 2019-03-30 | 2019-07-05 | 山东大学 | One kind being used for the clean integrated device of medical instrument heating disinfection |
| CN114100435A (en) * | 2021-11-05 | 2022-03-01 | 中国建筑第五工程局有限公司 | Integrated earth pressure balance shield original state muck resource treatment production line |
| CN114130461A (en) * | 2021-11-05 | 2022-03-04 | 中国建筑第五工程局有限公司 | Roller cleaning and cavity cleaning system of viscous shield muck crushing and refining equipment |
| CN114130461B (en) * | 2021-11-05 | 2022-12-13 | 中国建筑第五工程局有限公司 | Roller cleaning and cavity cleaning system of viscous shield muck crushing and refining equipment |
| CN114100435B (en) * | 2021-11-05 | 2024-04-16 | 中国建筑第五工程局有限公司 | Integrated soil pressure balance shield undisturbed residue soil recycling treatment production line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103224296B (en) | Air-supply-type self-excited oscillation pulse jet aerator | |
| CN203238105U (en) | Air supply type self-excited oscillation pulsed water jet aerator | |
| CN202898120U (en) | High-efficiency oxygen dissolving jet aerator | |
| CN107737537B (en) | Micro-nano bubble generating device | |
| CN202030576U (en) | Micro-nano plugflow aeration machine | |
| CN202968244U (en) | Jet aerator | |
| CN202099103U (en) | Ultrasonic-assisted jet flow type aeration machine | |
| CN201890803U (en) | Jet aerator | |
| CN103102021B (en) | High oxygen ejector | |
| CN111348740A (en) | Aeration system based on venturi tube cavitation effect | |
| CN103601285A (en) | Jet aerator | |
| CN203530035U (en) | Jet aerator | |
| CN203295268U (en) | Multichannel vortex jet aerator | |
| CN202492409U (en) | Venturi-type radial jet aerator | |
| CN204529482U (en) | Launch the jet aerator of turn type jet | |
| CN103342420B (en) | A kind of energy-efficient jet aerator | |
| CN202465400U (en) | Diffusion tube of submersible aeration machine | |
| CN201280474Y (en) | High-efficiency turbulent flow type ejector | |
| CN104761067A (en) | Jet aerator emitting swirling jet flow | |
| CN204185295U (en) | Nanometer aeration device | |
| CN2659882Y (en) | High efficiency jet aerator | |
| CN113926330B (en) | Micro-nano bubble generator | |
| CN104512959A (en) | Spiral vortex jet-flow aerating device | |
| CN102217453B (en) | Jet type fertilizer injector with oscillation cavities | |
| CN201896094U (en) | Jet aerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Fanjiatun village 111218 Liaoyang city in Liaoning Province town of Taizi River area Patentee after: Liaoning Boshi Technology Co.,Ltd. Address before: Fanjiatun village 111218 Liaoyang city in Liaoning Province town of Taizi River area Patentee before: LIAOYANG BOSHI FLUID EQUIPMENT Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131016 |
|
| CX01 | Expiry of patent term |