CN107047445A - A kind of miniature small-power paddle aerator - Google Patents

A kind of miniature small-power paddle aerator Download PDF

Info

Publication number
CN107047445A
CN107047445A CN201710315895.1A CN201710315895A CN107047445A CN 107047445 A CN107047445 A CN 107047445A CN 201710315895 A CN201710315895 A CN 201710315895A CN 107047445 A CN107047445 A CN 107047445A
Authority
CN
China
Prior art keywords
motor
impeller
floating body
support
rotary shaft
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.)
Pending
Application number
CN201710315895.1A
Other languages
Chinese (zh)
Inventor
杨性楷
张晓宁
李道芳
张小勇
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.)
SHANGHAI YIMIN MOTOR Co Ltd
Original Assignee
SHANGHAI YIMIN MOTOR Co Ltd
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 SHANGHAI YIMIN MOTOR Co Ltd filed Critical SHANGHAI YIMIN MOTOR Co Ltd
Priority to CN201710315895.1A priority Critical patent/CN107047445A/en
Publication of CN107047445A publication Critical patent/CN107047445A/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04Arrangements for treating water specially adapted to receptacles for live fish
    • A01K63/042Introducing gases into the water, e.g. aerators, air pumps

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

The present invention relates to a kind of miniature small-power paddle aerator, including floating body, motor, impeller, floating body is made of vinyon, floating body is to be surrounded by edge, the hollow circular ring of middle part indentation, impeller is arranged on center position in floating body, motor is installed below floating body, impeller is connected with the rotary shaft of motor, impeller is made up of rotor block and multiple blades, rotor block is arranged on centre, blade is uniformly distributed circumferentially around rotor block, blade is in inverted trapezoidal tile type structure, blade lean is welded on rotor block excircle, impeller plays current under under the drive of motor shower nozzle to aerial and form water smoke obliquely upward;The present invention is compared with the existing technology, it is simple for structure, it is easy for installation, spray can be played obliquely upward under directly by current reach more preferable oxygenation dissolved oxygen effect, family's aquaculture apparatus field is can be widely used for, the dissolved oxygen amount and culture efficiency of aquatic products is effectively increased.

Description

A kind of miniature small-power paddle aerator
[technical field]
The present invention relates to aquatic products oxygen increasing equipment technical field, specifically a kind of miniature small-power paddle aerator.
[background technology]
At present, in the various submersible pumps of in the market and various aquaculture machinery equipment, conventional mainly has vane type increasing Oxygen machine and jet surging type aerator.Wherein, paddle aerator, its motor is rack-mount after being assembled equipped with reduction box, then Support is arranged on three ball floats, shaft extension end of motor installs one 1:11 reduction boxes, reduction box shaft extension impeller disk exists Spray is dug with the rotation drive of 136r/min rotating speeds in water and promotes water wave flowing increase dissolved oxygen in water tolerance, its is complicated, body Product is huge.And jet surging type aerator is, by loading onto water pump on motor top, shower nozzle, water quilt from gap to be loaded onto in exit of pump Squeeze out, after ejecting, oxygenation scope is only an annulus scope, and water very little, and oxygen transfer rate is not enough, dynamic efficiency It is low.Therefore, above-mentioned aerator can not meet the specific demand of small-sized raiser, if a kind of miniature small-power vane type can be provided Aerator, makes it have simple and reliable for structure, and water is big, and oxygen transfer rate is sufficient, and dynamic efficiency is high, is possible to obtain certain warp Benefit of helping and social benefit.
[content of the invention]
A kind of miniature small-power paddle aerator is provided present invention aim to solve above-mentioned deficiency, can be straight Connect and current are played into spray under obliquely upward reach more preferable oxygenation dissolved oxygen effect, can be widely used for family's aquaculture and set Standby field, improves the economic benefit of raiser.
A kind of miniature small-power paddle aerator, including floating body 1, motor 24, impeller are designed to achieve the above object 2, the floating body 1 is made of vinyon, and the floating body 1 is the hollow annular shape knot for being surrounded by edge, middle part indentation Structure, the impeller 2 is arranged on center position in floating body 1, and the lower section of floating body 1 is provided with motor 24, the impeller 2 and electricity The rotary shaft 3 of motivation 24 is connected, and the impeller 2 is made up of rotor block 4 and multiple blades 5, and the rotor block 4 is arranged on centre, The blade 5 is uniformly distributed circumferentially around rotor block 4, and the blade 5 is in inverted trapezoidal tile type structure, and the blade 5 inclines Inclined weld is connected on the excircle of rotor block 4, and current are played spray by the impeller 2 obliquely upward under the drive of motor 24 under Spill to aerial and form water smoke.
Further, the motor 24 has stator core 6, rotor core 7 and support 8, and the rotary shaft 3 is located at The center of rotor core 7, the stator core 6, rotor core 7 are arranged in support 8, and the bottom end seal of support 8 is connected with out Line box 9, the top of support 8 is fixedly connected on floating body 1 by supporting plate 10, and the inner top of support 8 is sealedly connected with electricity Lid 11 on machine, the inner bottom part of support 8 is sealedly connected with motor lower cover 12, between the bottom of rotary shaft 3 and motor lower cover 12 Bearing 1 is equiped with, the top of rotary shaft 3 passes through and is equiped with impeller 2, the impeller 2 behind lid 11, the top of support 8 on motor It is arranged on by impeller nut 14 in the end of rotary shaft 3, the rotary shaft 3 and motor between lid 11 and is equiped with bearing 2 15, institute State and outside framework oil seal 16 be equiped between rotary shaft 3 and the top of support 8, in the rotary shaft 3 on motor lid 11 and the top of support 8 it Between be arranged with mechanical seal 17.
Further, the support 8, outlet box 9, rotary shaft 3 are made of stainless steel material, are covered on the motor 11st, motor lower cover 12 is made of cast iron quality.
Further, the top of support 8 is fixedly connected in supporting plate 10 by end cover nut 18, the end cover nut 18 and motor on be sealedly connected with pad 19 between lid 11.
Further, offered on the outlet box 9 at line outlet, the line outlet and outlet sealing device 20 be installed, The lead-out wire 21 of the motor 24 passes through line outlet by outlet sealing device 20, and is tightly connected between outlet box 9.
Further, the motor 24 is three-phase 380V or single-phase 220V capacitor start capacitor operating type motor.
Further, the excircle of floating body 1 is circumferentially distributed mounting hole 22.
The present invention compared with the existing technology, has the following advantages that:
(1) by setting brand-new inverted trapezoidal tile type blade wheel structure, current directly can be played into water obliquely upward under Flower reaches more preferable oxygenation dissolved oxygen effect, and its spray kicks up remote, height, and spray is evenly distributed, and the spray coverage scattered reaches 12 rice diameters or so, spray highly reaches 1.5 meters or so;
(2) the ring-like floating body of open core vinyon can support the whole motor with impeller to bubble through the water column, and divide in annulus Overall aerator can be fixed on the water surface by the mounting hole at place in order to user with rope;
(3) three-phase 380V or single-phase 220V capacitor start capacitor operating type motor, power is the small-sized of 0.75kW Motor is easy to user's selection to use, and the design of waterproof sealing structure is reached IP68, and motor heat dissipation ring under water Border is good, and the motor casing, shaft are stainless steel structure, so as to anti-corrosion, antirust and anti-saline alkali corrosion;
(4) present invention is for successfully new-type, the reliable aquatic products oxygenation of adaptation small aquatic products kind raiser recent development Equipment, can be widely applied for family's aquaculture apparatus field, effectively increase the dissolved oxygen amount and culture efficiency of aquatic products, small The power of motor of type can save again electric energy improve raiser economic benefit, and the equipment have it is simple for structure, it is easy for installation, The striking features such as power saving, are worthy of popularization.
[brief description of the drawings]
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the external structure schematic diagram of motor and impeller in the present invention;
Fig. 3 is the dimensional structure diagram one of impeller in the present invention;
Fig. 4 is the dimensional structure diagram two of impeller in the present invention;
Fig. 5 is the front view of impeller in the present invention;
Fig. 6 is the top view of impeller in the present invention;
Fig. 7 is the upward view of impeller in the present invention;
In figure:1st, floating body 2, impeller 3, rotary shaft 4, rotor block 5, blade 6, stator core 7, rotor core 8, Support 9, outlet box 10, supporting plate 11, lid 12, motor lower cover 13, bearing 1, impeller nut 15, bearing on motor 2 16, outside framework oil seal 17, mechanical seal 18, end cover nut 19, pad 20, outlet sealing device 21, lead-out wire 22, Mounting hole 23, plug cock screw 24, motor.
[embodiment]
Further explained below is made to the present invention below in conjunction with the accompanying drawings:
As shown in drawings, the present invention includes:Floating body 1, motor 24, impeller 2, motor 24 are three-phase 380V or single-phase 220V capacitor start capacitor operating type motor, floating body 1 is made of vinyon, and floating body 1 is to be surrounded by edge, middle part The hollow circular ring of indentation, impeller 2 is arranged on center position in floating body 1, and the lower section of floating body 1 is provided with motor 24, leaf Wheel 2 is connected with the rotary shaft 3 of motor 24, and impeller 2 is made up of rotor block 4 and multiple blades 5, and rotor block 4 is arranged on centre, leaf Piece 5 is uniformly distributed circumferentially around rotor block 4, and blade 5 is in inverted trapezoidal tile type structure, and the oblique weld of blade 5 is in rotor block 4 On excircle, impeller 2 plays current under under the drive of motor 24 shower nozzle to aerial and form water smoke obliquely upward.
Wherein, motor 24 has stator core 6, rotor core 7 and support 8, and rotary shaft 3 is located in rotor core 7 The heart, stator core 6, rotor core 7 are arranged in support 8, and the bottom end seal of support 8 is connected with outlet box 9, and the top of support 8 passes through Supporting plate 10 is fixedly connected on floating body 1, and the inner top of support 8 is sealedly connected with lid 11 on motor, and the inner bottom part of support 8 is tightly connected There is motor lower cover 12, bearing 1 is equiped between the bottom of rotary shaft 3 and motor lower cover 12, the top of rotary shaft 3 is passed through on motor Impeller 2 is equiped with behind lid 11, the top of support 8, impeller 2 is arranged on the end of rotary shaft 3, rotary shaft 3 and electricity by impeller nut 14 Bearing 2 15 is equiped with machine between lid 11, is equiped between rotary shaft 3 and the top of support 8 in outside framework oil seal 16, rotary shaft 3 electric Mechanical seal 17 is arranged with machine between lid 11 and the top of support 8, support 8, outlet box 9, rotary shaft 3 use stainless steel material It is made, lid 11, motor lower cover 12 are made of cast iron quality on motor, and the top of support 8 is fixedly connected on by end cover nut 18 In supporting plate 10, pad 19 is sealedly connected with end cover nut 18 and motor between lid 11;Line outlet is offered on outlet box 9, Outlet sealing device 20 is installed, the lead-out wire 21 of motor 24 passes through line outlet by outlet sealing device 20 at line outlet, And be tightly connected between outlet box 9;The excircle of floating body 1 is circumferentially distributed mounting hole 22, is such as provided with 4 mounting holes, should Overall aerator can be fixed on the water surface by mounting hole in order to user with rope.
In the present invention, floating body can support the whole motor with impeller to bubble through the water column, and motor and impeller are completely immersed in In water, so as to provide good heat dissipation environment to motor, and brand-new inverted trapezoidal tile type blade wheel structure, then can by current from Under play the effect that spray reaches oxygenation dissolved oxygen obliquely upward, spray can be thus lifted to 1.5 meters of height, spread out into 12 meters it is straight Footpath scope;In use, oxygen increasing machine impeller rotates at a high speed, by impeller blade, water is directly got rid of in atmosphere, because higher turns Speed, it is thinner to be allowed to spray, so as to form water smoke, reaches more preferable oxygenation effect.
Miniature small-power paddle aerator of the present invention is for adaptation small aquatic products kind raiser's recent development Successful new-type, reliable aquatic products oxygen increasing equipment, the equipment has succinct structure, easy for installation, and spray kicks up remote, height, water Flower is evenly distributed and the striking features such as power saving, and the product is the structure type of the vane type being different from the market and formula of gushing Aerator.Its motor has two kinds of specifications of single-phase 220V and three-phase 380V to be available for the free type selection of client, is set with motor Count software and carry out optimization electromagnetic design, its degree of protection reaches IP68, meet the submersible motor requirement of national standard, multipole electricity Motivation structure is slowed down without reduction box, simple and reliable for structure, the direct good cooling results of spray of rising, will not be intake, sealing knot Structure is safe and reliable.The aerator has that oxygenation effect is more preferable, the thin lift of spray remote, aquaculture cost is low, structure it is novel it is reliable, start The low excellent feature of voltage, newly-designed product is Water cooling type motor, and monophase machine is two-capacitance capacitive Rotation type motor, electronic Machine has noise and electric current small, the multiple advantages such as service life length of product.
Decomposition explanation is done to miniature small-power paddle aerator of the present invention below with reference to accompanying drawing:
(1) original paddle aerator is:Motor has three-phase, single-phase capacitor running type two to be assembled equipped with reduction box It is rack-mount afterwards, then support is arranged on three ball floats, shaft extension end of motor installs one 1:11 reduction boxes, reduction box Shaft extension impeller disk digs spray with the rotation drive of 136r/min rotating speeds in water and promotes water wave flowing increase dissolved oxygen in water gas Amount, power of motor has 1.1kW, 1.5kW, 2.2kW, 3kW.
(2) jet surging type aerator of in the market is:By loading onto water pump on motor top, shower nozzle is loaded onto in exit of pump, Water is extruded out from gap, after ejecting, and oxygenation scope is tightly an annulus scope, water very little, and oxygen transfer rate is not Foot, dynamic efficiency is low, and the oxygen transfer rate of miniature small-power paddle aerator of the present invention, dynamic efficiency can reach Standard SC/T6010《Impeller automatic aerator technical conditions》Requirement.
(3) structure of miniature small-power paddle aerator of the present invention is:Three-phase and single-phase capacitance start multistage Motor, power 0.75kW directly drives an inverted trapezoidal tile type impeller, and motor, impeller are completely immersed in water, and motor is installed On a closed circle plastic hollow core floating body, rotation drives tile impeller that spray is played into 1.5 meters at a high speed after electrical power Height is spilt to the aerial of the rice diameter of circumference 12, serves the effect of dissolved oxygen oxygenation, while water impact wave direction pond extends, due to dissipating Tiny to aerial spray, range of scatter is big, and dissolved oxygen is abundant, therefore good with oxygenation effect, and power saving feature is obvious.
(4) present invention is welcome depth by vast small-sized aquatic products professional raising farmer, its can improve production equipment and process in Flow, sets up production line, increases manufacturing facilities, and replenishment of process, frock equipment carry out batch and protect production, can meet domestic aquatic products small-sized Cultivate the thriving demand of producer Machinery Market client.
The present invention is simultaneously not limited to the embodiments described above limitation, other any Spirit Essences and principle without departing from the present invention Lower made change, modification, replacement, combination, simplification, should be equivalent substitute mode, be included in the protection model of the present invention Within enclosing.

Claims (7)

1. a kind of miniature small-power paddle aerator, it is characterised in that:Including floating body (1), motor (24), impeller (2), institute State floating body (1) to be made of vinyon, the floating body (1) is the hollow annular shape knot for being surrounded by edge, middle part indentation Structure, the impeller (2) is arranged on below floating body (1) interior center position, the floating body (1) and is provided with motor (24), described Impeller (2) is connected with the rotary shaft (3) of motor (24), and the impeller (2) is made up of rotor block (4) and multiple blades (5), institute State rotor block (4) and be arranged on centre, the blade (5) is uniformly distributed circumferentially around rotor block (4), and the blade (5) is in Inverted trapezoidal tile type structure, blade (5) oblique weld is on rotor block (4) excircle, and the impeller (2) is in motor (24) current are played under to shower nozzle obliquely upward to aerial and form water smoke under drive.
2. miniature small-power paddle aerator as claimed in claim 1, it is characterised in that:The motor (24) has fixed Sub- iron core (6), rotor core (7) and support (8), the rotary shaft (3) are located at rotor core (7) center, the stator iron Core (6), rotor core (7) are arranged in support (8), and support (8) bottom end seal is connected with outlet box (9), the support (8) top is fixedly connected on floating body (1) by supporting plate (10), and support (8) inner top is sealedly connected with motor and covered (11), support (8) inner bottom part is sealedly connected with motor lower cover (12), rotary shaft (3) bottom and motor lower cover (12) Between be equiped with bearing one (13), rotary shaft (3) top is through being equiped with leaf behind lid (11), support (8) top on motor Take turns (2), the impeller (2) is arranged on rotary shaft (3) end by impeller nut (14), and the rotary shaft (3) on motor with covering (11) bearing two (15) is equiped between, outside framework oil seal (16), institute are equiped between the rotary shaft (3) and support (8) top State and be arranged with mechanical seal (17) between lid (11) and support (8) top on motor in rotary shaft (3).
3. miniature small-power paddle aerator as claimed in claim 2, it is characterised in that:The support (8), outlet box (9), rotary shaft (3) is made of stainless steel material, and (11), motor lower cover (12) are covered on the motor and use cast iron quality system Into.
4. miniature small-power paddle aerator as claimed in claim 2 or claim 3, it is characterised in that:Support (8) top leads to Cross end cover nut (18) to be fixedly connected in supporting plate (10), the company of sealing between (11) is covered on the end cover nut (18) and motor It is connected to pad (19).
5. miniature small-power paddle aerator as claimed in claim 4, it is characterised in that:Opened up on the outlet box (9) Have and outlet sealing device (20) is installed at line outlet, the line outlet, the lead-out wire (21) of the motor (24) is by going out Linear sealing device (20) passes through line outlet, and is tightly connected between outlet box (9).
6. miniature small-power paddle aerator as claimed in claim 5, it is characterised in that:The motor (24) is three-phase 380V or single-phase 220V capacitor start capacitor operating type motor.
7. miniature small-power paddle aerator as claimed in claim 6, it is characterised in that:Floating body (1) the excircle edge It is circumferentially distributed to have mounting hole (22).
CN201710315895.1A 2017-05-08 2017-05-08 A kind of miniature small-power paddle aerator Pending CN107047445A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710315895.1A CN107047445A (en) 2017-05-08 2017-05-08 A kind of miniature small-power paddle aerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710315895.1A CN107047445A (en) 2017-05-08 2017-05-08 A kind of miniature small-power paddle aerator

Publications (1)

Publication Number Publication Date
CN107047445A true CN107047445A (en) 2017-08-18

Family

ID=59597228

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710315895.1A Pending CN107047445A (en) 2017-05-08 2017-05-08 A kind of miniature small-power paddle aerator

Country Status (1)

Country Link
CN (1) CN107047445A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108184752A (en) * 2018-03-15 2018-06-22 无锡洛康智能科技有限公司 Fishery cultivating paddle aerator
CN109556190A (en) * 2018-12-29 2019-04-02 佛山市冉克电器有限公司 A kind of layout structure of kitchen and bath's air conditioner

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1153746A (en) * 1996-01-01 1997-07-09 吴海钧 Aerator
CN2880230Y (en) * 2005-11-01 2007-03-21 吴为国 Magnetic spraying type aerator
CN201923890U (en) * 2011-01-15 2011-08-10 吴为国 Impeller of aerator and aerator with same
CN202043539U (en) * 2011-05-16 2011-11-23 戴加育 Rotary drum spraying and throwing oxygen increasing machine
CN202475168U (en) * 2011-08-16 2012-10-03 吴为国 Stator positioning device for thin-wall motor, water pump with water cooling motor, and aerator with water cooling motor
CN102938596A (en) * 2011-08-16 2013-02-20 吴为国 Stator positioning method of thin-wall motor, water pump with water-cooled motor and aerator
CN203353458U (en) * 2013-07-10 2013-12-25 上海义民电机有限公司 Waterwheel aerator with brand new transmission structure
CN104026061A (en) * 2013-03-05 2014-09-10 吴为国 Vertical type aerator with water-cooled motor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1153746A (en) * 1996-01-01 1997-07-09 吴海钧 Aerator
CN2880230Y (en) * 2005-11-01 2007-03-21 吴为国 Magnetic spraying type aerator
CN201923890U (en) * 2011-01-15 2011-08-10 吴为国 Impeller of aerator and aerator with same
CN202043539U (en) * 2011-05-16 2011-11-23 戴加育 Rotary drum spraying and throwing oxygen increasing machine
CN202475168U (en) * 2011-08-16 2012-10-03 吴为国 Stator positioning device for thin-wall motor, water pump with water cooling motor, and aerator with water cooling motor
CN102938596A (en) * 2011-08-16 2013-02-20 吴为国 Stator positioning method of thin-wall motor, water pump with water-cooled motor and aerator
CN104026061A (en) * 2013-03-05 2014-09-10 吴为国 Vertical type aerator with water-cooled motor
CN203353458U (en) * 2013-07-10 2013-12-25 上海义民电机有限公司 Waterwheel aerator with brand new transmission structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108184752A (en) * 2018-03-15 2018-06-22 无锡洛康智能科技有限公司 Fishery cultivating paddle aerator
CN109556190A (en) * 2018-12-29 2019-04-02 佛山市冉克电器有限公司 A kind of layout structure of kitchen and bath's air conditioner
CN109556190B (en) * 2018-12-29 2024-05-03 佛山市冉克电器有限公司 Layout structure of kitchen and bathroom air conditioner

Similar Documents

Publication Publication Date Title
CN102263455B (en) Motor with hollow ventilating main shaft and feeding machine with same
CN107047445A (en) A kind of miniature small-power paddle aerator
CN206821726U (en) A kind of economical paddle aerator
TW201412241A (en) Wave aeration device for culture pond with surface and bottom layer circulation and turbulence
CN201336609Y (en) Low power motor with inner air cooling system
CN205225865U (en) Water -cooled permanent magnetism frequency conversion shielding pump package
CN205611562U (en) Improved generation impeller formula water -cooling oxygen -increasing machine
CN207201768U (en) A kind of ring gear driven type paddle aerator
CN201730728U (en) Circulation type water-turbine generator set
CN101731177B (en) Impeller water-spraying oxygen-increasing machine
CN107344144B (en) Air suction device of self-suction air flotation machine
CN205592152U (en) Novel water pump
CN1930955A (en) Water wheel type ventilator
CN204579557U (en) One is surged oxygen increasing pump
CN210143593U (en) Novel oxygen-increasing machine
CN209314639U (en) A kind of permanent-magnetic variable-frequency swell type aerator
CN209089717U (en) A kind of novel tonifying Qi stirring wheel
CN2789464Y (en) Water inlet up moving counter-flow liquid bottom pump
CN201595089U (en) Impeller water-jet type aerator
CN201010588Y (en) Water pumping oxygen-supplying machine
CN2555623Y (en) Water-cooling aeration waterwheel
CN201097553Y (en) Spewing type oxygen increasing machine for cultivation pond
CN2770350Y (en) Coaxial oxygenating machine
CN2789465Y (en) Counterflow liquid bottom pump added with hydrodynamic and hydrostatic bearing
CN218934760U (en) Downdraft submersible pump

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20170818

RJ01 Rejection of invention patent application after publication