CN106762672A - Reel sprinkling irrigation machine and its turbine type hydroturbine - Google Patents
Reel sprinkling irrigation machine and its turbine type hydroturbine Download PDFInfo
- Publication number
- CN106762672A CN106762672A CN201611179884.7A CN201611179884A CN106762672A CN 106762672 A CN106762672 A CN 106762672A CN 201611179884 A CN201611179884 A CN 201611179884A CN 106762672 A CN106762672 A CN 106762672A
- Authority
- CN
- China
- Prior art keywords
- turbine
- turbine type
- hydroturbine
- type hydroturbine
- sprinkling irrigation
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/09—Watering arrangements making use of movable installations on wheels or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2216—Shape, geometry
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Hydraulic Turbines (AREA)
Abstract
The present invention relates to agricultural machinery technological field, more particularly to a kind of turbine type hydroturbine for reel sprinkling irrigation machine, including：Turbine shroud, turbine lid and the half-opened impeller being arranged in turbine shroud, water inlet is provided with the turbine shroud, covered in the turbine and be provided with delivery port, the turbine type hydroturbine also includes being arranged between the turbine shroud and the half-opened impeller along the spiral flow channel circumferentially of the half-opened impeller, and the spiral flow channel is connected with the water inlet.The turbine type hydroturbine that the present invention is provided between turbine shroud and half-opened impeller by setting spiral flow channel, improve current into the inflow condition of impeller such that it is able to advantageously promote current flowing, there is provided high torque, hydraulic loss is reduced, the operating efficiency of hydroturbine is improved.The invention also discloses a kind of reel sprinkling irrigation machine comprising above-mentioned turbine type hydroturbine.
Description
Technical field
The present invention relates to agricultural machinery technological field, more particularly to a kind of turbine type eddies of water for reel sprinkling irrigation machine
Wheel, and the reel sprinkling irrigation machine comprising above-mentioned turbine type hydroturbine.
Background technology
Reel sprinkling irrigation machine is the automatic row that phase early 1970s grows up on the basis of tubular type spray irrigation system is moved
Walk sprinkling irrigation equipment, with compact conformation, conveniently moving, simple to operate, intelligence degree is high the features such as.Due to its mechanization degree
The advantages of high, operational administrative simple and convenient and good irrigation effect, be China's sprinkling irrigation row the need for comparing adaptation China rural development
One of main type of industry.The hydraulic drive apparatus of reel sprinkling irrigation machine mainly have that rotating nozzle type, the eddies of water be wheeled, hydraulic cylinder formula
With flexible bladder four kinds of forms, wherein, eddies of water wheel type drive device reliability is high, long service life, be combination property it is optimal,
Most wide reel sprinkling irrigation machine drive form is used at present.Hydroturbine as eddies of water wheel type drive device core component, its water
Power performance determines the size of driving torque and the size of output water flow pressure drop, has to irrigation sprinkler sprinkler performance and energy resource consumption
There is important influence.Further increasing with domestic market to reel sprinkling irrigation machine demand, it is efficient to reel sprinkling irrigation machine, steady
Fixed operation and it is energy-saving propose requirement higher, however, currently as the hydroturbine of reel sprinkling irrigation machine core component
Hydraulic loss is larger, operating efficiency is relatively low.
The content of the invention
(1) technical problem to be solved
It is an object of the present invention to provide a kind of turbine type hydroturbine for reel sprinkling irrigation machine, the turbine type eddies of water
Wheel can reduce hydraulic loss, improve the operating efficiency of hydroturbine.
It is a further object to provide a kind of reel sprinkling irrigation machine comprising above-mentioned turbine type hydroturbine.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides a kind of turbine type hydroturbine for reel sprinkling irrigation machine,
Wherein, including turbine shroud, turbine lid and the half-opened impeller that is arranged in turbine shroud, set on the turbine shroud
Have water inlet, covered in the turbine and be provided with delivery port, the turbine type hydroturbine also include be arranged on the turbine shroud and
Along the spiral flow channel circumferentially of the half-opened impeller between the half-opened impeller, the spiral flow channel with it is described enter
The mouth of a river connects.
Wherein, area of the spiral flow channel in each axial plane of half-opened impeller is gradually reduced along the direction that becomes a mandarin.
Wherein, section of the spiral flow channel in each axial plane of half-opened impeller is trapezoidal.
Wherein, the half-opened impeller includes cover plate and the blade being distributed uniformly and circumferentially on the cover plate,
The blade includes the first arc section and the second arc section being connected with one end of the first arc section, first arc section and institute
State the tie point that the second arc section is tangential on the first arc section and the first arc section.
Wherein, it is provided with balance pipe on the cover plate.
Wherein, the blade uses plain vane.
Wherein, it is provided with deflector on the wall of the delivery port.
Wherein, the quantity of the deflector is 4, and this 4 described deflectors are uniformly distributed circumferentially in the water outlet
On the wall of mouth.
Wherein, the deflector and the turbine lid are integrally formed.
The invention also discloses a kind of reel sprinkling irrigation machine, it includes turbine type hydroturbine as described above.
(3) beneficial effect
The turbine type hydroturbine that the present invention is provided between turbine shroud and half-opened impeller by setting spiral flow channel
To replace annular channel of traditional current in turbine chamber body, current into the inflow condition of impeller are improved such that it is able to
Advantageously promote current flowing, there is provided high torque, reduce hydraulic loss, improve the operating efficiency of hydroturbine.Further, exist
The exit of hydroturbine sets deflector, to reduce the whirlpool of outlet stream, water flow stationary is flowed into connecting tube, can effectively reduce
Hydraulic loss in follow-up pipeline.Additionally, the eddies of water impeller blade uses the plain vane being made up of circular arc bone line, processing technology
Simply, and with good hydraulic performance.
Brief description of the drawings
Fig. 1 is a kind of front view of turbine type hydroturbine for reel sprinkling irrigation machine of the invention；
Fig. 2 is the sectional view of the turbine type hydroturbine in Fig. 1；
Fig. 3 is the structural representation of the impeller of the turbine type hydroturbine in Fig. 1；And
Fig. 4 shows the runner of the interior twist structure of the turbine chamber body of turbine type hydroturbine.
In figure, 1：Water inlet；2：Delivery port；3：Spiral flow channel；4：Turbine lid；5：Turbine shroud；6：Impeller；7：Leaf
Piece；8：Cover plate；9：Drive shaft；10：Deflector；11：Seal；12：Balance pipe；13：Impeller nut；14：Key.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Fig. 1 shows that of a kind of turbine type hydroturbine for reel sprinkling irrigation machine of the invention is preferable to carry out
Example.As shown in figure 1, the turbine type hydroturbine includes turbine shroud 5, the turbine lid 4 snapped onto on turbine shroud 5, and set
Half-opened impeller 6 in turbine shroud 5, is provided with water inlet 1 on turbine shroud 5, and the water inlet is used to connect with water inlet pipe
Connect, delivery port 2 is provided with turbine lid 4, the delivery port 2 is used to be connected with outlet pipe.The turbine type hydroturbine also includes driving
Moving axis 9, one end of the drive shaft 9 is connected with half-opened impeller 6, and the other end is connected through turbine shroud 5 with transmission device, in order to
Prevent from being spilt in gap of the water between turbine shroud 5 and drive shaft 9, the position being connected with turbine shroud 5 in drive shaft 9 is set
There is seal 11.The turbine type hydroturbine also includes impeller nut 13 and key 14, and impeller nut 13 and key 14 are by half-opened impeller 6
It is fixed in drive shaft 9.Additionally, the turbine type hydroturbine also includes being arranged between turbine shroud 5 and half-opened impeller 6 along half
The spiral flow channel 3 circumferentially of unshrouded impeller 6, the spiral flow channel 3 is connected with water inlet 1.When using, press water is through entering
The mouth of a river 1 is flowed into, and half-opened impeller 6 is impacted by spirality channel 3, rotates half-opened impeller 6 so as to drive drive shaft 9 to revolve
Turn, the rotation of drive shaft 9 drives the reel of reel sprinkling irrigation machine slowly to rotate by transmission device, so that connecting with delivery port 2
The PE flexible pipes for connecing in layer are wrapped on reel, and the sprinkling irrigation dolly of reel sprinkling irrigation machine is also as the winding of PE flexible pipes is to reel
Car is moved, and is flowed through nozzles spray by PE flexible pipes from the press water of turbine type hydroturbine outflow and is gone out, the shower nozzle on sprinkling irrigation dolly
Start operation of spraying water.
The turbine type hydroturbine that the present invention is provided sets spiral current by between turbine shroud 5 and half-opened impeller 6
Road 3, to change annular channel of traditional current in turbine chamber body, so as to improve current into the inflow condition of impeller 6,
Current flowing can be advantageously promoted, there is provided high torque, reduce hydraulic loss, improve the operating efficiency of hydroturbine.
Specifically, area of the spiral flow channel 3 in each axial plane of half-opened impeller 6 is gradually reduced along the direction that becomes a mandarin
(such as linear to reduce), so can preferably concentrate hydraulic drives hydroturbine to rotate, and lift current into the uniform of impeller
Property, and then larger driving force is produced, and hydraulic loss in hydroturbine is reduced, operational efficiency is improved, as shown in Figure 2 and Figure 4.It is preferred that
Section of the spiral flow channel 3 in each axial plane of half-opened impeller 6 for trapezoidal, the trapezoidal bottom by turbine shroud 5 inwall
Face limits, and is rounding at two base angles of the trapezoidal bottom.
Further, as shown in Fig. 2 being circumferentially evenly arranged with 4 deflectors on the wall of the delivery port 2 of hydroturbine
10, i.e., 90 °, and each deflector 5cm long are spaced between two neighboring deflector, saliva can be eliminated out by the deflector 10
Stream vortex, makes current smooth out outflow.It should be noted that, although showing 4 deflectors 10, this area skill in this embodiment
Art personnel should be appreciated that in some other embodiment of the invention deflector 10 can also use other quantity, such as 2
Or 6 etc..
Half-opened impeller 6 includes cover plate 8 and 8 blades 7 being distributed uniformly and circumferentially on cover plate 8, each leaf
Piece 7 includes the first arc section and the second arc section being connected with one end of the first arc section, and the first arc section and the second circle
Segmental arc is tangential on the tie point of the first arc section and the second arc section.Preferably, the blade 7 uses plain vane, with simplification
Processing technology simultaneously lifts hydraulic performance.Additionally, 4 balance pipes 12 are additionally provided with cover plate 8, the institute of impeller 6 during for balancing work
The axial thrust received.
The invention also discloses a kind of reel sprinkling irrigation machine, it includes turbine type hydroturbine as described above.
The course of work of the invention is as follows：Reel sprinkling irrigation machine under the traction of tractor, is transferred to field sprinkler first
Operation area, field is laid in by PE flexible pipes, and PE flexible pipes one end is connected with sprinkling irrigation dolly, and the other end is wrapped on reel and and turbine
Formula hydroturbine delivery port 2 is connected, when the feedwater of the turbine type hydroturbine water inlet 1 and field sprinkler press water of reel sprinkling irrigation machine
When bolt is connected, press water is flowed into through water inlet 1, and the blade 7 of half-opened impeller 6 is impacted by spiral flow channel 3, makes semi-open type leaf
So as to drive drive shaft 9 to rotate, the other end of drive shaft 9 connects transmission device to the rotation of wheel 6, and then drives reel slowly to rotate, PE
Flexible pipe is in layer wrapped on reel, sprinkling irrigation dolly also as the winding of PE flexible pipes is moved to reel car, from the turbine type eddies of water
The press water for taking turns outflow is connected by delivery port 2 with PE flexible pipes, and press water flows through nozzles spray and goes out by PE flexible pipes, is sprayed small
Shower nozzle on car starts operation of spraying water.With the recovery of PE flexible pipes, work is automatically stopped when sprinkling irrigation dolly is near reel car.Then
Whole machine turns 180 °, or reel sprinkling irrigation machine is carried out into sprinkling irrigation operation by tractor-drawn to next job site.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of turbine type hydroturbine for reel sprinkling irrigation machine, it is characterised in that including turbine shroud, turbine lid and set
The half-opened impeller in turbine shroud is put, water inlet is provided with the turbine shroud, covered in the turbine and be provided with
Delivery port, the turbine type hydroturbine also includes being arranged between the turbine shroud and the half-opened impeller along the semi-open type
The spiral flow channel circumferentially of impeller, the spiral flow channel is connected with the water inlet.
2. turbine type hydroturbine as claimed in claim 1, it is characterised in that the spiral flow channel is in each axle of half-opened impeller
Area in face is gradually reduced along the direction that becomes a mandarin.
3. turbine type hydroturbine as claimed in claim 2, it is characterised in that the spiral flow channel is in each axle of half-opened impeller
Section in face is trapezoidal.
4. turbine type hydroturbine as claimed in claim 1, it is characterised in that the half-opened impeller includes cover plate and along circle
Circumferential direction is evenly distributed on the blade on the cover plate, and the blade includes the first arc section and connects with one end of the first arc section
The second arc section for connecing, first arc section is tangential on the company of the first arc section and the first arc section with second arc section
Contact.
5. turbine type hydroturbine as claimed in claim 4, it is characterised in that be provided with balance pipe on the cover plate.
6. turbine type hydroturbine as claimed in claim 4, it is characterised in that the blade uses plain vane.
7. the turbine type hydroturbine as any one of claim 1-6, it is characterised in that on the wall of the delivery port
It is provided with deflector.
8. turbine type hydroturbine as claimed in claim 7, it is characterised in that the quantity of the deflector is 4, and this 4
The deflector is uniformly distributed circumferentially on the wall of the delivery port.
9. turbine type hydroturbine as claimed in claim 7, it is characterised in that the deflector and the turbine lid be one into
Shape.
10. a kind of reel sprinkling irrigation machine, it is characterised in that including the turbine type eddies of water as claimed in any one of claims 1-9 wherein
Wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611179884.7A CN106762672A (en) | 2016-12-19 | 2016-12-19 | Reel sprinkling irrigation machine and its turbine type hydroturbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611179884.7A CN106762672A (en) | 2016-12-19 | 2016-12-19 | Reel sprinkling irrigation machine and its turbine type hydroturbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106762672A true CN106762672A (en) | 2017-05-31 |
Family
ID=58890587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611179884.7A Pending CN106762672A (en) | 2016-12-19 | 2016-12-19 | Reel sprinkling irrigation machine and its turbine type hydroturbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106762672A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331616A (en) * | 2018-04-04 | 2018-07-27 | 西安交通大学 | A kind of wheeling disk structure of disc type turbine |
| CN108331695A (en) * | 2017-12-21 | 2018-07-27 | 中国农业大学 | A kind of hydroturbine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB648899A (en) * | 1947-10-06 | 1951-01-17 | Harland Engineering Co Ltd | Improvements in and relating to water turbines |
| FR2300909A1 (en) * | 1975-02-11 | 1976-09-10 | Schlemmer Gunter | Francis turbine with ring around inner blade ring and hub - produces accelerated partial flow to reduce turbulence (SW060976) |
| CN201187394Y (en) * | 2008-05-06 | 2009-01-28 | 赵艳丰 | Water turbine type drive device of winch capstan type traveler sprinkling irrigation machine |
| KR100917850B1 (en) * | 2007-12-31 | 2009-09-18 | 한국수자원공사 | A method for calculating the strength index of spiral-vortex-flow |
| CN204591564U (en) * | 2015-03-06 | 2015-08-26 | 西安理工大学 | A kind of Francis turbine with exit guide vane |
| ES2551756B1 (en) * | 2014-05-21 | 2016-03-29 | Antonia Sempere Navarro | Hydraulic interposition turbine |
| CN106168190A (en) * | 2016-08-08 | 2016-11-30 | 江苏大学 | A kind of reel sprinkling irrigation machine tilt-impulse type hydroturbine |
-
2016
- 2016-12-19 CN CN201611179884.7A patent/CN106762672A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB648899A (en) * | 1947-10-06 | 1951-01-17 | Harland Engineering Co Ltd | Improvements in and relating to water turbines |
| FR2300909A1 (en) * | 1975-02-11 | 1976-09-10 | Schlemmer Gunter | Francis turbine with ring around inner blade ring and hub - produces accelerated partial flow to reduce turbulence (SW060976) |
| KR100917850B1 (en) * | 2007-12-31 | 2009-09-18 | 한국수자원공사 | A method for calculating the strength index of spiral-vortex-flow |
| CN201187394Y (en) * | 2008-05-06 | 2009-01-28 | 赵艳丰 | Water turbine type drive device of winch capstan type traveler sprinkling irrigation machine |
| ES2551756B1 (en) * | 2014-05-21 | 2016-03-29 | Antonia Sempere Navarro | Hydraulic interposition turbine |
| CN204591564U (en) * | 2015-03-06 | 2015-08-26 | 西安理工大学 | A kind of Francis turbine with exit guide vane |
| CN106168190A (en) * | 2016-08-08 | 2016-11-30 | 江苏大学 | A kind of reel sprinkling irrigation machine tilt-impulse type hydroturbine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331695A (en) * | 2017-12-21 | 2018-07-27 | 中国农业大学 | A kind of hydroturbine |
| CN108331616A (en) * | 2018-04-04 | 2018-07-27 | 西安交通大学 | A kind of wheeling disk structure of disc type turbine |
| CN108331616B (en) * | 2018-04-04 | 2023-05-02 | 西安交通大学 | Wheel disc structure of disc turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103573539B (en) | A kind of low discharge reel sprinkling irrigation machine hydroturbine | |
| CN103244335B (en) | A kind of leafy water turbine | |
| CN106762672A (en) | Reel sprinkling irrigation machine and its turbine type hydroturbine | |
| CN201187394Y (en) | Water turbine type drive device of winch capstan type traveler sprinkling irrigation machine | |
| WO2010009629A1 (en) | A hydrodynamic cooling fan for a cooling tower with high efficiency and saving-energy | |
| CN203743008U (en) | Novel efficient spiral-flow type slurry pump with impeller arranged in middle | |
| CN105604959B (en) | Powershift combined agricultural water pump | |
| CN106286090B (en) | A kind of associated mode sprinkler with reel hydroturbine | |
| CN111535974A (en) | Low-water-head large-flow mixed-flow water turbine with double-inlet volute | |
| CN203756418U (en) | Small-flow water turbine of reel-type sprinkling machine | |
| CN206389925U (en) | A kind of reel sprinkling irrigation machine energy-saving power device | |
| CN203035616U (en) | Pumping chamber for volute mixed-flow pump | |
| CN106986395B (en) | A kind of water distributor | |
| CN106168190B (en) | A kind of reel sprinkling irrigation machine tilt-impulse type hydroturbine | |
| CN107905933A (en) | A kind of hydraulic turbine that can adjust water stream channel size | |
| CN211712754U (en) | Ammonia nitrogen coupling dissolved oxygen aeration energy-saving control system | |
| CN207609618U (en) | Angle of water is adjustable axial-flow pump | |
| CN102996521B (en) | Pumping chamber of volute type mixed-flow pump | |
| CN207554354U (en) | A kind of novel Pulp pump with anti-blockage function | |
| CN206539536U (en) | A kind of integrated Axial Flow Pump Station | |
| WO2020037644A1 (en) | Semi-open type flow guide boosting impeller | |
| CN214196760U (en) | Fluid rotary conveying device | |
| CN211343368U (en) | Centrifugal pump with multiple detachable water outlets | |
| CN205315191U (en) | Through -flow turbine | |
| CN211379083U (en) | Water flow energy self-rotating irrigation device |
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: 20170531 |
|
| RJ01 | Rejection of invention patent application after publication |