CN106763992A - Agricultural water conservation automatic irrigation valve - Google Patents
Agricultural water conservation automatic irrigation valve Download PDFInfo
- Publication number
- CN106763992A CN106763992A CN201611158156.8A CN201611158156A CN106763992A CN 106763992 A CN106763992 A CN 106763992A CN 201611158156 A CN201611158156 A CN 201611158156A CN 106763992 A CN106763992 A CN 106763992A
- Authority
- CN
- China
- Prior art keywords
- catch
- designed
- iron core
- filter
- spring
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 230000002262 irrigation Effects 0.000 title claims abstract description 12
- 238000003973 irrigation Methods 0.000 title claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 39
- 210000004907 gland Anatomy 0.000 claims abstract description 22
- 238000007667 floating Methods 0.000 claims abstract description 9
- 229920003023 plastic Polymers 0.000 claims description 16
- 239000004033 plastic Substances 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Float Valves (AREA)
Abstract
The present invention relates to a kind of agricultural water conservation automatic irrigation valve.It includes valve body, diaphragm, pressing plate, iron core, gland, floating ball component, catch, upper end is equipped with diaphragm in the middle of valve body, pressing plate is housed, pressing plate top is equipped with iron core, and iron core outside is equipped with gland on diaphragm, gland middle upper part is designed with a lead column, iron core is located in lead column, and pressing diaphragm on the outside of the water inlet flow channel oral area of valve body upper end, is located at outlet passage oral area upper end by gland lower end surrounding in the middle of diaphragm, catch is " mouth " shape, and catch indoor design has floating ball component.Advantage is to design ingenious, rational in infrastructure compact, easy to use, low cost, and small volume, the design using magnet ring, iron core and spring coordinates, it is ensured that valve switch is sensitive.
Description
Technical field
The present invention relates to valve field, and in particular to a kind of agricultural water conservation automatic irrigation valve.
Background technology
Conventional valve switch is insensitive, it is impossible to which effectively control, valve closing is not in place sometimes, easily supplies water always, causes
Supply water excessive, although some Valve controllings are accurate now, high cost, complex structure is uneconomical, it is impossible to meet market need
Ask.
The content of the invention
In order to solve the above problems, the present invention proposes a kind of agricultural water conservation automatic irrigation valve, designs ingenious, user
Just, low cost, small volume is switched sensitive.
Technical scheme：
Agricultural water conservation automatic irrigation valve, it includes valve body, diaphragm, pressing plate, iron core, gland, floating ball component, catch, in valve body
Two ends runner, one end is water inlet flow channel, and the other end is outlet passage, and middle water inlet flow channel and outlet passage intersect in valve body
Place, outlet passage is located in water inlet flow channel, and upper end is equipped with diaphragm in the middle of valve body, and pressing plate is housed on diaphragm, and pressing plate top is equipped with iron
Core, iron core outside is equipped with gland, and gland middle upper part is designed with a lead column, and iron core is located in lead column, gland lower end four
Pressing diaphragm is located at outlet passage oral area upper end by week on the outside of the water inlet flow channel oral area of valve body upper end in the middle of diaphragm, catch is
" mouth " shape, catch indoor design has floating ball component, and floating ball component includes plastic hoop, magnet ring, ball float, connecting rod, spring, spring housing
On the outside of lead column, plastic hoop inner upper end is equipped with magnet ring, and plastic hoop interior lower end is enclosed within lead column outside and spring is located at modeling
Between material ring and lead column, spring upper end withstands on magnet ring lower end, and lower spring end is withstood on above the gland of lead column lower end surrounding, modeling
Material ring two ends are symmetrically connected with ball float by connecting rod, and ball float is located at catch both sides, and catch lower end is pressed in above gland and by spiral shell
Nail is fixed on valve body upper end.
Described pressing plate lower end medium design has a big cylinder and big cylindrical outer side lower end is designed with taper chuck, great circle
Post both sides are respectively designed with lower end on the outside of a small column and small column and are designed with taper chuck, and big cylinder medium design has guide
Hole, small column medium design has extruding orifices, and big cylinder upper end is provided with circular groove, big cylinder through pressing plate top and greatly in cylinder top
Upper outer is provided with draw-in groove, draw-in groove and circular groove UNICOM, and draw-in groove one end is designed with latch mounted in big cylindrical outer side, and the draw-in groove other end sets
In respect of locating dowel, iron core lower end is connected with a pilot valve by connecting rod, and pilot hole upper end is designed with conical seal (contact) face position
In circular groove bottom, pilot valve is cone-shaped valve element, and pilot valve is engaged positioned at circular groove bottom with conical seal (contact) face, U-shaped card
Spring is inserted in draw-in groove from locating dowel side and the pawl of U-shaped card spring oral area design is stuck on latch, and U-shaped card spring is stuck in pilot valve
End both sides, connecting rod is passed through from the middle of U-shaped card spring and is connected to iron core lower end.
Described iron core upper end is designed with chuck, and back-moving spring is housed in chuck, and back-moving spring is multiple loaded on inside lead column
Position spring upper end withstands on lead column inner upper, and back-moving spring lower end is withstood in chuck.
Described catch is to be bent into " mouth " shape catch by a rectangle aluminium alloy plate, catch lower end take mouthful in
Between be provided with circular hole, lead column is passed through from circular hole, and catch lower end corner and upper end corner have circular hole, four circles of lower end
Catch is mounted in valve body upper end through screw in hole, the circular hole of upper end corner is designed to handle hole.
The entrance point of the inlet channel of described valve body is equipped with filter, and filter includes filter core, filter body and filter
Device lid, filter core is semi-circular filter core, and filter core lower end is semi-circular shape, and the radius of semicircle is equal with water inlet pipe inside radius, on filter core
End design is semicircle to be covered, and filter core both sides and rear end are designed with cutting, and filter body correspondence is designed with slot, there is sealing in filter cover
Pad, filter core is inserted in filter body, and filter cover closure is on filter body.
It is an advantage of the invention that design is ingenious, rational in infrastructure compact, easy to use, low cost, small volume, using magnet ring,
The design of iron core and spring coordinates, it is ensured that valve switch is sensitive.
Brief description of the drawings
Fig. 1 is schematic diagram of the invention.
Fig. 2 is partial enlarged drawing of the invention.
Specific embodiment
Referring to the drawings 1-2, agricultural water conservation automatic irrigation valve, it include valve body 1, diaphragm 2, pressing plate 3, iron core 4, gland 5,
Floating ball component, catch 7, two ends runner in valve body 1, one end is water inlet flow channel 8, and the other end is outlet passage 9, middle in valve body 1
Water inlet flow channel 8 and outlet passage 9 are intersected place, and outlet passage 9 is located in water inlet flow channel 8, and the middle upper end of valve body 1 is equipped with diaphragm 2,
Pressing plate 3 is housed, the top of pressing plate 3 is equipped with iron core 4, and the outside of iron core 4 is equipped with gland 5, and the middle upper part of gland 5 is designed with one on diaphragm 2
Individual lead column 10, iron core 4 is located in lead column 10, and the lower end surrounding of gland 5 is pressed in diaphragm 28 mouthfuls of the water inlet flow channel of the upper end of valve body 1
Portion outside, is located at the oral area upper end of outlet passage 9 in the middle of diaphragm 2, catch 7 is " mouth " shape, and the indoor design of catch 7 has ball float group
Part, floating ball component includes plastic hoop 11, magnet ring 12, ball float 13, connecting rod, spring 14, and spring 14 is enclosed within the outside of lead column 10, plastics
The inner upper end of ring 11 is equipped with magnet ring 12, the interior lower end of plastic hoop 11 is enclosed within the outside of lead column 10 and spring 14 be located at plastic hoop 11 with
Between lead column 10, the upper end of spring 14 withstands on the lower end of magnet ring 12, and the lower end of spring 14 is withstood on the gland 5 of the lower end surrounding of lead column 10
Face, the two ends of plastic hoop 11 are symmetrically connected with ball float 13 by connecting rod, and ball float 13 is located at catch both sides, and the lower end of catch 7 is pressed in gland 5
Above and it is fixed by screws in the upper end of valve body 1.
The described lower end medium design of pressing plate 3 has a big cylinder 31 and the big outside lower end of cylinder 31 is designed with conic clamp
Platform, the both sides of big cylinder 31 are respectively designed with a small column 32 and the outside lower end of small column 32 is designed with taper chuck, big cylinder
31 medium designs have pilot hole, and the medium design of small column 32 has extruding orifices, and the upper end of big cylinder 31 passes through pressing plate top and big cylinder
Circular groove is provided with 31 tops, the upper outer of big cylinder 31 is provided with draw-in groove, draw-in groove and circular groove UNICOM, and draw-in groove one end is designed with latch dress
In big cylindrical outer side, the draw-in groove other end is designed with locating dowel, and the lower end of iron core 4 is connected with a pilot valve 41 by connecting rod,
Pilot hole upper end is designed with conical seal (contact) face positioned at circular groove bottom, and pilot valve 41 is cone-shaped valve element, and pilot valve 41 is located at
Circular groove bottom is engaged with conical seal (contact) face, the pawl that U-shaped card spring is inserted in draw-in groove from locating dowel side and U-shaped card spring oral area is designed
It is stuck on latch, U-shaped card spring is stuck in the upper end both sides of pilot valve 41, connecting rod is passed through from the middle of U-shaped card spring and is connected under iron core 4
End.
The described upper end of iron core 4 is designed with chuck, and back-moving spring 42 is housed in chuck, and back-moving spring 42 is loaded on lead column 10
Inside, the upper end of back-moving spring 42 withstands on the inner upper of lead column 10, and the lower end of back-moving spring 42 is withstood in chuck.
Described catch 7 is to be bent into " mouth " shape catch by a rectangle aluminium alloy plate, and the lower end of catch 7 is taken at mouth
Centre is provided with circular hole, and lead column 10 is passed through from circular hole, and the lower end corner of catch 7 and upper end corner have circular hole, lower end
Catch is mounted in the upper end of valve body 1 through screw in four circular holes, the circular hole of upper end corner is designed to handle hole.
The entrance point of the inlet channel 8 of described valve body 1 is equipped with filter 15, and filter 15 includes filter core, filter
Body and filter cover, filter core are semi-circular filter cores, and filter core lower end is semi-circular shape, and the radius of semicircle is equal with water inlet pipe inside radius,
The design of filter core upper end is semicircle to be covered, and filter core both sides and rear end are designed with cutting, and filter body correspondence is designed with slot, in filter cover
There is sealing gasket, filter core is inserted in filter body, and filter cover closure is on filter body.
When the present invention is used, the entrance point connection water inlet pipe of valve, port of export connection farmland, in farmland during water shortage, ball float
In the case where not having water, decline under Action of Gravity Field, drive plastic hoop, overcome spring force, in plastic hoop contact catch inner bottom surface,
During decline, magnet ring has magnetic force while attracting the iron core in lead column, iron core to overcome the reaction force of back-moving spring, iron core
Slowly move upwards, when magnet ring more leans on nearer with iron core, suction overcomes return spring force completely, and iron core moment rises to maximum height
Degree, magnet ring drops to extreme lower position simultaneously, and iron core lower end is applied to pilot valve, first opens pilot valve, and water is from water inlet flow channel
It is introduced between diaphragm and gland by extruding orifices and is formed in cavity 6, pilot valve one is opened, and the hydraulic pressure in cavity 6 will
Lay down, water enters into outlet passage from pilot hole, this is that water acts on the pressure of diaphragm and just diminishes, and iron core passes through pilot valve
Core acts on pressing plate, and pressing plate function is disengaged in diaphragm, diaphragm from outlet passage upper end oral area, and at this moment whole valve is opened completely；
When length on water level in farmland, two ball floats of this valve rise under buoyancy, uphill process middle magnetic ring acts on iron core
Suction slowly diminishes, and after the power of spring is more than magnetic force plus the buoyancy of ball float, plastic hoop resets under the above-mentioned force, iron core
During suction slowly diminishes, after the power of back-moving spring is more than suction plus the gravity of iron core, iron core is pressed down reset, iron
Core seals pilot hole by lower end pilot valve, then effect and pressing plate, and pressing plate band dynamic diaphragm is pushed, then diaphragm lower end is sealed in
Outlet passage upper end oral area, now valve closing.This valve realizes that switch is rapid under the effect of ball float, spring and magnet ring, sensitive.
Claims (5)
1. agricultural water conservation automatic irrigation valve, it is characterised in that it includes valve body, diaphragm, pressing plate, iron core, gland, ball float group
Part, catch, two ends runner in valve body, one end is water inlet flow channel, and the other end is outlet passage, in valve body in the middle of water inlet flow channel and go out
Water flow passage is intersected place, and outlet passage is located in water inlet flow channel, and upper end is equipped with diaphragm in the middle of valve body, and pressing plate, pressure are housed on diaphragm
Plate top is equipped with iron core, and iron core outside is equipped with gland, and gland middle upper part is designed with a lead column, and iron core is located at lead column
Interior, pressing diaphragm on the outside of the water inlet flow channel oral area of valve body upper end, is located at outlet passage oral area by gland lower end surrounding in the middle of diaphragm
Upper end, catch is " mouth " shape, and catch indoor design has floating ball component, and floating ball component includes plastic hoop, magnet ring, ball float, company
Bar, spring, on the outside of lead column, plastic hoop inner upper end is equipped with magnet ring to spring housing, and plastic hoop interior lower end is enclosed within outside lead column
Side and spring are located between plastic hoop and lead column, and spring upper end withstands on magnet ring lower end, and lower spring end withstands on lead column lower end four
Above the gland in week, plastic hoop two ends are symmetrically connected with ball float by connecting rod, and ball float is located at catch both sides, and catch lower end is pressed in
Cover face and be fixed by screws in valve body upper end.
2. agricultural water conservation automatic irrigation valve according to claim 1, it is characterized in that described pressing plate lower end medium design
There is a big cylinder and big cylindrical outer side lower end is designed with taper chuck, big cylinder both sides are respectively designed with a small column and small
Cylindrical outer side lower end is designed with taper chuck, and big cylinder medium design has pilot hole, and small column medium design has extruding orifices, great circle
Post upper end is through pressing plate top and is provided with circular groove in cylinder top greatly, and big cylinder upper outer is provided with draw-in groove, and draw-in groove joins with circular groove
Logical, draw-in groove one end is designed with latch mounted in big cylindrical outer side, and the draw-in groove other end is designed with locating dowel, and iron core lower end passes through connecting rod
A pilot valve is connected with, pilot hole upper end is designed with conical seal (contact) face positioned at circular groove bottom, and pilot valve is cone-shaped valve
Core, pilot valve is engaged positioned at circular groove bottom with conical seal (contact) face, and U-shaped card spring is inserted in draw-in groove and U-shaped card from locating dowel side
The pawl of spring oral area design is stuck on latch, and U-shaped card spring is stuck in pilot valve upper end both sides, and connecting rod is worn from the middle of U-shaped card spring
Cross and be connected to iron core lower end.
3. agricultural water conservation automatic irrigation valve according to claim 1, it is characterized in that described iron core upper end is designed with card
Platform, is equipped with back-moving spring in chuck, loaded on inside lead column, back-moving spring upper end withstands on lead column inner upper to back-moving spring,
Back-moving spring lower end is withstood in chuck.
4. agricultural water conservation automatic irrigation valve according to claim 1, it is characterized in that described catch is long by
Square aluminium alloy plate is bent into " mouth " shape catch, and catch lower end is taken and circular hole is provided with the middle of at mouth, and lead column is passed through from circular hole,
Catch lower end corner and upper end corner have circular hole, and catch is mounted on valve body through screw in four circular holes of lower end
End, the circular hole of upper end corner is designed to handle hole.
5. agricultural water conservation automatic irrigation valve according to claim 1, it is characterized in that the inlet channel of described valve body
Entrance point is equipped with filter, and filter includes filter core, filter body and filter cover, and filter core is semi-circular filter core, filter core lower end
It is semi-circular shape, the radius of semicircle is equal with water inlet pipe inside radius, semicircle covering, filter core both sides and rear end are designed in filter core upper end
Cutting is designed with, filter body correspondence is designed with slot, there is sealing gasket in filter cover, and filter core is inserted in filter body, filter cover sealing
Cover on filter body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611158156.8A CN106763992A (en) | 2016-12-15 | 2016-12-15 | Agricultural water conservation automatic irrigation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611158156.8A CN106763992A (en) | 2016-12-15 | 2016-12-15 | Agricultural water conservation automatic irrigation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106763992A true CN106763992A (en) | 2017-05-31 |
Family
ID=58889265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611158156.8A Pending CN106763992A (en) | 2016-12-15 | 2016-12-15 | Agricultural water conservation automatic irrigation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106763992A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339472A (en) * | 2017-07-18 | 2017-11-10 | 肖海涛 | A kind of farmland Self-control water saving valve |
| WO2019010590A1 (en) * | 2017-07-12 | 2019-01-17 | 王亚娟 | Mechanical guide-type automatic control valve |
| CN113826530A (en) * | 2021-11-01 | 2021-12-24 | 潘东 | Irrigation change-over valve and intelligent irrigation system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2570559Y (en) * | 2002-06-06 | 2003-09-03 | 扬州开发区日利达有限公司 | Magnetic force controlled float valve |
| CN102384301A (en) * | 2011-11-16 | 2012-03-21 | 黄石市海成节能科技开发有限公司 | Single-direction magnetic-thrust self-control water-saving valve |
| KR20120035427A (en) * | 2010-10-05 | 2012-04-16 | 정휘동 | Valve for opening and closing the passage using buoyancy |
| CN202327286U (en) * | 2011-11-25 | 2012-07-11 | 浙江金博流体控制有限公司 | Magnetic automatically-closed water nozzle |
| CN103940124A (en) * | 2014-04-01 | 2014-07-23 | 汤宝田 | Mechanical pilot-operated type internally piloted valve |
| CN206320389U (en) * | 2016-12-15 | 2017-07-11 | 肖海涛 | Agricultural water conservation automatic irrigation valve |
-
2016
- 2016-12-15 CN CN201611158156.8A patent/CN106763992A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2570559Y (en) * | 2002-06-06 | 2003-09-03 | 扬州开发区日利达有限公司 | Magnetic force controlled float valve |
| KR20120035427A (en) * | 2010-10-05 | 2012-04-16 | 정휘동 | Valve for opening and closing the passage using buoyancy |
| CN102384301A (en) * | 2011-11-16 | 2012-03-21 | 黄石市海成节能科技开发有限公司 | Single-direction magnetic-thrust self-control water-saving valve |
| CN202327286U (en) * | 2011-11-25 | 2012-07-11 | 浙江金博流体控制有限公司 | Magnetic automatically-closed water nozzle |
| CN103940124A (en) * | 2014-04-01 | 2014-07-23 | 汤宝田 | Mechanical pilot-operated type internally piloted valve |
| CN206320389U (en) * | 2016-12-15 | 2017-07-11 | 肖海涛 | Agricultural water conservation automatic irrigation valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019010590A1 (en) * | 2017-07-12 | 2019-01-17 | 王亚娟 | Mechanical guide-type automatic control valve |
| CN107339472A (en) * | 2017-07-18 | 2017-11-10 | 肖海涛 | A kind of farmland Self-control water saving valve |
| CN113826530A (en) * | 2021-11-01 | 2021-12-24 | 潘东 | Irrigation change-over valve and intelligent irrigation system |
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| 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 |
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| RJ01 | Rejection of invention patent application after publication |