CN109673483A - A kind of fertigation device - Google Patents
A kind of fertigation device Download PDFInfo
- Publication number
- CN109673483A CN109673483A CN201910150148.6A CN201910150148A CN109673483A CN 109673483 A CN109673483 A CN 109673483A CN 201910150148 A CN201910150148 A CN 201910150148A CN 109673483 A CN109673483 A CN 109673483A
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- Prior art keywords
- flap
- water
- sealing area
- pressure
- inner cavity
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- 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.)
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/04—Distributing under pressure; Distributing mud; Adaptation of watering systems for fertilising-liquids
- A01C23/042—Adding fertiliser to watering systems
-
- 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
- A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- Catching Or Destruction (AREA)
Abstract
The present invention provides a kind of fertigation device, comprising: body has inner cavity, and the water feed inlet and service water outlet that are connected to inner cavity；Flap is movably mounted at inner cavity by elastic pressure structure, has primary sealing area；Water-proof seal ring is mounted on inside water feed inlet by fixed structure, has the secondary sealing area opposite with the primary sealing area of flap；When hydraulic pressure in water feed inlet is lower than setting pressure, flap squeezes primary sealing area and secondary sealing area and seals under the action of elastic pressure structure；When hydraulic pressure in water feed inlet is higher than setting pressure, water pressure pushing flap overcomes the pressure reversal of elastic pressure structure mobile, and primary sealing area is separated with secondary sealing area, forms the access that water supply stream passes through；Suction inlet is arranged on body outer wall, is connected to inner cavity, and opposite always with the outer wall of flap.Fertigation device of the invention, when venturi principle can be effectively prevent not work, water flow adverse current pollution fertilizer stoste.
Description
Technical field
The present invention relates to agricultural irrigation fertilizer apparatus technical fields, and in particular to a kind of fertigation device.
Background technique
With the development of agricultural modernization, occurs to irrigate and fertilising is fused in a device while carrying out operation
Demand can greatly reduce irrigation, fertilising institute by being supplied to crops after mixing irrigation water and fertilizer in the same apparatus
The resources such as time, labour and the energy for irrigating and applying fertilizer needed.
Chinese patent literature CN208191288U discloses a kind of water-soluble biological organic fertilizer application device comprising into
The end of water supervisor 01 and water outlet main pipe 02, water inlet supervisor 01 is communicated with three row application pipelines 03, and the end of fertilizing pipeline 03 is equal
It is communicated to water outlet main pipe 02, fertilizing pipeline 03 includes water inlet pipe 031, Venturi tube 032 and the exit branch being sequentially communicated
033, Venturi tube 032 enters pipeline 04 by fertilizer and is connected to container of fertilizer 05, so that the water flow that water inlet pipe 031 flows into drives
Venturi tube 032 absorbs the fertilizer in container of fertilizer 05, and is flowed out in water outlet main pipe 02 by exit branch 033.The patent
Technical solution in document at least has following technological deficiency although can mix one to three kind of fertilizer:
1) fertilizer is inhaled using venturi principle, namely is sucked the fertilizer inside container of fertilizer 05 by Venturi tube 032, and
It is flowed out in water outlet main pipe 02 by exit branch 033, the differential water pressures for needing to reach certain just may be implemented, as water inlet supervisor 01
Interior hydraulic pressure is lower or rigid water supply start causes the hydraulic pressure being responsible in 01 into water lower so that when hydraulic pressure is inadequate, venturi principle
It may not work completely, it is direct that the water at this time from water inlet supervisor 01 can enter pipeline 04 by Venturi tube 032, fertilizer
Adverse current enters in container of fertilizer 05, pollutes fertilizer stoste；That is, the hydraulic pressure in the water inlet pipe 031 caused by any reason
When lower, contaminated water flow fertilizer stoste all may cause；
2) when the hydraulic pressure irrigated in water outlet main pipe 02 caused by termination or other reasons increases suddenly, it is mixed with fertilizer
Water may countercurrently enter water inlet line 01, and then pollute watering；
3) end of water inlet supervisor 01 is divided into three by pipeline, and water outlet main pipe 02 is unified three by pipeline again,
This pipeline structure is very easy to cause that the hydraulic pressure of three channel interiors is inconsistent namely pressure difference is inconsistent, and then leads to fertilizer
Inlet capacity is different, influences using effect.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcome fertilizer application device in the prior art hydraulic pressure compared with
It is low, so that the water flow in water inlet pipe can countercurrently enter container of fertilizer dirt when Venturi tube can not generate suction attraction fertilizer
The technological deficiency of fertilizer stoste is contaminated, to provide a kind of fertigation device that can be avoided water flow adverse current and pollute fertilizer stoste.
For this purpose, the present invention provides a kind of fertigation device, it is characterised in that: include:
Body has inner cavity and water feed inlet in communication with the inner cavity and service water outlet；
Flap is movably mounted at the inner cavity by elastic pressure structure, has primary sealing area；
Water-proof seal ring is mounted on inside the water feed inlet by fixed structure, have with it is the first of the flap close
The opposite secondary sealing area of cover；
When hydraulic pressure in the water feed inlet is lower than setting pressure, effect of the flap in the elastic pressure structure
Under, it squeezes the primary sealing area and the secondary sealing area and seals；
When hydraulic pressure in the water feed inlet is higher than setting pressure, flap described in water pressure pushing overcomes the elastic pressure knot
The pressure reversal of structure is mobile, and the primary sealing area is separated with the secondary sealing area, forms the access that water supply stream passes through；
Suction inlet is arranged on the body outer wall, is connected to the inner cavity, and with the outer wall of flap phase always
It is right.
It as a preferred embodiment, further include separation structure, for by the outer wall of the inner wall of the body and the flap
Between distribution channel be separated at least two sub-channels.
As a preferred embodiment, the separation structure includes:
Flow distribution plate, at least two, it is fixed on the body inner wall, is located at the inner cavity, along described interior
Chamber it is axially extending；
Diversion channel, at least two, it is arranged on the flap, matches for can be relatively movably inserted into the flow distribution plate
It closes.
As a preferred embodiment, at least one described sub-channel is equipped at least one described suction inlet.
As a preferred embodiment, the separation structure includes:
Flow distribution plate is three, is uniformly and fixedly arranged on the body inner wall, is located at the inner cavity, along described interior
Chamber it is axially extending；
Diversion channel is three, is arranged on the flap, for can relatively movably be inserted into cooperation with the flow distribution plate；
Suction inlet is three, respectively be separated out with three flow distribution plates and three diversion channels three
Sub-channel connection.
As a preferred embodiment, the elastic pressure structure includes:
Locating rack is fixed on the body；
Guide sleeve is fixed on the locating rack；
Guide post, cooperation are inserted into inside the guide sleeve, and one end is fixedly connected with the flap；
Elastic component is set in the guide post, and one end and the valve flap contacts, the other end are contacted with the guide sleeve.
As a preferred embodiment, the flap has for accommodating at least part guide post and being set in described
The accommodating chamber of elastic component on the outside of guide post.
As a preferred embodiment, one end far from the primary sealing area of the flap is cone structure.
As a preferred embodiment, the fixed structure includes:
Step surface is arranged inside the body；
Fixed thread set is fit into inside the water feed inlet by helicitic texture, thus by the sealing that blocks water
Circle is squeezed and is fixed on the step surface.
As a preferred embodiment, further include the mounting hole that the water feed inlet and/or service water outlet end are set, use
In with piping connection.
Above-mentioned technical proposal of the invention has the advantages that
1, flap, water-proof seal ring inside body is arranged in fertigation device of the invention, including body, and
Elastic pressure structure；Flap has primary sealing area, and water-proof seal ring has secondary sealing area, when the hydraulic pressure in water feed inlet is low
When setting pressure, flap overcomes the hydraulic pressure in water feed inlet under the action of elastic pressure structure, makes primary sealing area and
Two sealing surfaces squeeze sealing, and the water in water feed inlet cannot be introduced into inner cavity, be can be effectively prevented into water entrance in this way
Water it is lower in hydraulic pressure, when venturi principle does not work, water flow through suction inlet flow directly into fertilizer stoste pollution fertilizer stoste
The case where occur；In addition, elastic pressure structure also can be rapid when the hydraulic pressure of water outlet increases suddenly (as blinded off a line suddenly)
Driving flap is combined with water-proof seal ring sealing, to prevent the water for being mixed with fertilizer adverse current from entering water inlet line, and then is polluted
The case where resource of water supply.
2, fertigation device of the invention is additionally provided with separation structure as the further improvement to the present apparatus, by body
Inner wall and flap outer wall between distribution channel be separated at least two sub-channels, thereby realize multichannel shunting,
So as to individually supply water for multiple positions；Or at least one suction inlet is set at least one sub-channel, it is formed multiple
Venturi tube, each Venturi tube can suck fertilizer, thus realize that multichannel shunts, it is identical or not per being all mixed with all the way
Same fertilizer；Or be connected to the end of multiple Venturi tubes, it is to supply water at one, is mixed with the fertilizer of one or more types.
3, fertigation device of the invention, elastic pressure structure include: locating rack, guide sleeve, guide post and elastic component.
When the hydraulic pressure in water feed inlet is lower than setting pressure, flap can be pushed into be tightly connected with water-proof seal ring first by elastic component
The effect of automatic water-stop sealing, the setting of locating rack, guide sleeve and guide post, it can be ensured that flap is along device are realized in beginning position
Body center line moves back and forth.
4, fertigation device of the invention, flap have for accommodating at least part guide post and being set in institute
The accommodating chamber of the elastic component on the outside of guide post is stated, flap can not only be reduced and occupy body volume, moreover it is possible to from periphery package elasticity
Part protects elastic component.
5, fertigation device of the invention, the one end of flap far from primary sealing area is cone structure, and this structure is just
In the rapid impingement mix of fertilizer entered from different suction inlets, be conducive to uniform of application.
6, fertigation device of the invention, fixed structure include the step surface and fixed thread being arranged in inside body
Set；Fixed thread set is fit into inside water feed inlet by helicitic texture, so that water-proof seal ring extruding is fixed on platform
On terrace；The case where fixed structure can prevent water-proof seal ring from changing position because of the pressure of water flow appearance, so that sealing effect
Fruit is stablized effective.
7, fertigation device of the invention further includes the mounting hole that water feed inlet and/or service water outlet end is arranged in,
For with piping connection, this structure can play the role of fixed body, prevent body shake.
Detailed description of the invention
In order to illustrate more clearly of the technical solution in the prior art or the specific embodiment of the invention, below to existing skill
Attached drawing used in art or specific embodiment description is briefly described.
Fig. 1 is the overall structure schematic diagram of fertilizer application device in the prior art.
Fig. 2 is the structure principle chart of fertilizing pipeline position in Fig. 1.
Fig. 3 is the longitudinal cutting structure schematic diagram of fertigation device of the present invention.
Fig. 4 is the cross cut structure schematic diagram of fertigation device of the present invention.
Appended drawing reference: 01, water inlet supervisor；02, water outlet main pipe；03, fertilizing pipeline；031, water inlet pipe；032, venturi
Pipe；033, exit branch；04, fertilizer enters pipeline；05, container of fertilizer；1, body；10, inner cavity；11, water feed inlet；12, it supplies
Water out；13, suction inlet；2, flap；20, accommodating chamber；21, primary sealing area；22, cone structure；3, water-proof seal ring；31,
Secondary sealing area；4, distribution channel；41, sub-channel；51, flow distribution plate；52, diversion channel；61, locating rack；62, guide sleeve；63, it leads
Xiang Zhu；64, elastic component；71, step surface；72, fixed thread set；8, mounting hole.
Specific embodiment
Technical solution of the present invention is described in detail with reference to the accompanying drawings of the specification.
Embodiment
The present embodiment provides a kind of fertigation devices, as shown in Figure 3-4, comprising: body 1 has inner cavity 10, Yi Jiyu
The water feed inlet 11 and service water outlet 12 that the inner cavity 10 is connected to；Flap 2 is movably mounted at institute by elastic pressure structure
It states inside inner cavity 10, there is primary sealing area 21；Water-proof seal ring 3 is mounted in the water feed inlet 11 by fixed structure
Portion has the secondary sealing area 31 opposite with the primary sealing area 21 of the flap 2；Hydraulic pressure in the water feed inlet 11 is lower than
When setting pressure, the flap 2 makes the primary sealing area 21 and described second close under the action of the elastic pressure structure
Cover 31 squeezes sealing；When hydraulic pressure in the water feed inlet 11 is higher than setting pressure, flap 2 described in water pressure pushing overcomes described
The pressure reversal of elastic pressure structure is mobile, and the primary sealing area 21 is separated with the secondary sealing area 31, is formed for water flow
By access；Suction inlet 13 is arranged on 1 outer wall of body, is connected to the inner cavity 10, and outer with the flap 2
Wall is opposite always.
The fertigation device of the present embodiment, when the hydraulic pressure in water feed inlet 11 is lower than setting pressure, flap 2 is in elasticity
Under the action of pressure texture, the hydraulic pressure in water feed inlet 11 is overcome, squeeze primary sealing area 21 and secondary sealing area 31 and seal,
Water in water feed inlet 11 cannot be introduced into inside inner cavity 10, can be effectively prevented in this way into the water in water entrance 11 hydraulic pressure compared with
Low, when venturi principle does not work, water flows through the case where suction inlet 13 flows directly into fertilizer stoste pollution fertilizer stoste appearance；
In addition, elastic pressure structure can also drive rapidly flap 2 when the hydraulic pressure of water outlet 12 increases suddenly (as blinded off a line suddenly)
It is combined with the sealing of water-proof seal ring 3, to prevent the water for being mixed with fertilizer adverse current from entering water inlet line, and then pollutes resource of water supply
The case where.
As shown, further include separation structure, for will be between the inner wall of the body 1 and the outer wall of the flap 2
Distribution channel 4 is separated at least two sub-channels 41.
The separation structure includes: flow distribution plate 51, is three, is uniformly and fixedly arranged on 1 inner wall of body, is located at institute
It states inside inner cavity 10, along the axially extending of the inner cavity 10；Diversion channel 52, be three, be arranged on the flap 2, for
The flow distribution plate 51 can relatively movably be inserted into cooperation；Suction inlet 13 is three, respectively and by three flow distribution plates 51 and three
A diversion channel 52 cooperates three sub-channels 41 connection being separated out.
As deformation design scheme, separation structure may include at least two flow distribution plates 51 and at least two diversion channels 52,
To form at least two sub-channels 41；Furthermore it is possible to which at least one described sub-channel 41 is arranged equipped with described at least one
Suction inlet 13.
Multiple sub-channels 41 are formed, multichannel shunting may be implemented, so as to individually supply water for multiple positions；Or extremely
At least one suction inlet 13 is set on a few sub-channel 41, forms multiple Venturi tubes, each Venturi tube can inhale
Enter fertilizer, thus realize that multichannel shunts, it is every to be all mixed with identical or different fertilizer all the way；Or by the end of multiple Venturi tubes
End connection is to supply water at one, is mixed with the fertilizer of one or more types.
The elastic pressure structure includes: locating rack 61, is fixed on the body 1；Guide sleeve 62, fixed setting
On the locating rack 62；Guide post 63, cooperation are inserted into inside the guide sleeve 62, and one end is fixedly connected with the flap 2；Bullet
Property part 64, is set in the guide post 63, one end is contacted with the flap 2, and the other end is contacted with the guide sleeve 62.
When the hydraulic pressure in water feed inlet 11 is lower than setting pressure, flap 2 can be pushed into and be blocked water sealing by elastic component 64
The initial positions that circle 3 is tightly connected, realize the effect of automatic water-stop sealing, locating rack 61, guide sleeve 62 and guide post 63
Setting, it can be ensured that flap 2 is moved back and forth along 1 center line of body.
The flap 2 has for accommodating at least part guide post 63 and being set in 62 outside of guide post
The accommodating chamber 20 of elastic component 64, the advantages of this arrangement are as follows, the volume that flap 2 occupies body 1 can not only be reduced, moreover it is possible to from
Periphery package elastic component 64, protects elastic component 64.
One end far from the primary sealing area 21 of the flap 2 is cone structure 22, and this structure is convenient for from difference
The rapid impingement mix of fertilizer that suction inlet enters, is conducive to uniform of application.
The fixed structure includes: step surface 71, is arranged inside the body 1；Fixed thread set 72, passes through screw thread knot
Structure is fit into inside the water feed inlet 11, so that the water-proof seal ring 3 extruding is fixed on the step surface 71.
The case where fixed structure can prevent water-proof seal ring 3 from changing position because of the pressure of water flow appearance, so that sealing effect is stablized
Effectively.
It further include the mounting hole 8 that 12 end of the water feed inlet 11 and/or service water outlet is set, for connecting with pipeline
It connects.This structure can play the role of fixed body, prevent body from shaking.
The workflow of the present embodiment fertigation device is as follows:
When rigid water supply start, the hydraulic pressure in water feed inlet 11 is lower, at this time flap 2 under the action of elastic pressure structure,
It combines closely with water-proof seal ring 3, water flow cannot be introduced into inside the inner cavity 10 of body 1 at this time；
When hydraulic pressure gradually rise to reach setting pressure when, after water pressure pushing flap 2 overcomes the thrust of elastic pressure structure
Mobile, flap 2 is separated with water-proof seal ring 3, and water flow can enter inside the inner cavity 10 of body 1 at this time, due to water flow at this time
Through with certain pressure value, when water flow flows through the distribution channel between 2 outer wall of 1 inner wall of body and flap, venturi principle is risen
Effect, suction inlet 13 of the fertilizer through being provided on 1 outer wall of body flow into 10 inside of inner cavity and mix with water flow；
At the end of water supply, no matter being off water supply causes the hydraulic pressure in water feed inlet 11 to decline, or sprinkling mouth is closed
Caused 12 pressure rise of service water outlet, can all make flap 2 be moved under the promotion of elastic pressure structure again with block water
Sealing ring 3 combines, and water feed inlet 11 is closed, to prevent the water pollution resource of water supply for being mixed with fertilizer.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of fertigation device, it is characterised in that: include:
Body (1) has inner cavity (10), and the water feed inlet (11) and service water outlet (12) that are connected to the inner cavity (10)；
Flap (2) is movably mounted at the inner cavity (10) inside by elastic pressure structure, has primary sealing area
(21)；
It is internal to be mounted on the water feed inlet (11) by fixed structure for water-proof seal ring (3), has and the flap (2)
The opposite secondary sealing area (31) of primary sealing area (21)；
When hydraulic pressure in the water feed inlet (11) is lower than setting pressure, work of the flap (2) in the elastic pressure structure
Under, squeezes the primary sealing area (21) and the secondary sealing area (31) and seal；
When hydraulic pressure in the water feed inlet (11) is higher than setting pressure, flap (2) described in water pressure pushing overcomes the elasticity pressure
The pressure reversal of power structure is mobile, and the primary sealing area (21) and the secondary sealing area (31) separate, and forms circulation of supplying water
The access crossed；
Suction inlet (13) is arranged on the body (1) outer wall, is connected to the inner cavity (10), and outer with the flap (2)
Wall is opposite always.
2. fertigation device according to claim 1, it is characterised in that: further include separation structure, be used for the device
Distribution channel (4) between the inner wall of body (1) and the outer wall of the flap (2) is separated at least two sub-channels (41).
3. fertigation device according to claim 2, it is characterised in that: the separation structure includes:
Flow distribution plate (51), at least two, it is fixed on the body (1) inner wall, is located at the inner cavity (10) inside, edge
The inner cavity (10) it is axially extending；
Diversion channel (52), at least two, it is arranged on the flap (2), for that can be relatively moved with the flow distribution plate (51)
Ground insertion cooperation.
4. fertigation device according to claim 3, it is characterised in that: at least one described sub-channel (41) is equipped with
At least one described suction inlet (13).
5. fertigation device according to claim 2, it is characterised in that: the separation structure includes:
Flow distribution plate (51) is three, is uniformly and fixedly arranged on the body (1) inner wall, is located at the inner cavity (10) inside, edge
The inner cavity (10) it is axially extending；
Diversion channel (52) is three, is arranged on the flap (2), for can relatively movably insert with the flow distribution plate (51)
Enter cooperation；
Suction inlet (13) is three, separates respectively with three flow distribution plates (51) and three diversion channels (52)
Three sub-channels (41) connection out.
6. fertigation device according to claim 1, it is characterised in that: the elastic pressure structure includes:
Locating rack (61) is fixed on the body (1)；
Guide sleeve (62) is fixed on the locating rack (62)；
Guide sleeve (62) inside is inserted into guide post (63), cooperation, and one end is fixedly connected with the flap (2)；
Elastic component (64) is set on the guide post (63), and one end is contacted with the flap (2), the other end and the guiding
Cover (62) contact.
7. fertigation device according to claim 6, it is characterised in that: the flap (2) has for accommodating at least
The accommodating chamber (20) of a part of guide post (63) and the elastic component (64) being set on the outside of the guide post (62).
8. fertigation device according to claim 1, it is characterised in that: separate described the first of the flap (2) is close
One end of cover (21) is cone structure (22).
9. fertigation device according to claim 1, it is characterised in that: the fixed structure includes:
Step surface (71), setting are internal in the body (1)；
Fixed thread set (72) is fit into the water feed inlet (11) inside by helicitic texture, to block water described
Sealing ring (3) extruding is fixed on the step surface (71).
10. fertigation device according to claim 1, it is characterised in that: further include being arranged in the water feed inlet
(11) and/or the mounting hole (8) of service water outlet (12) end it, is used for and piping connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910150148.6A CN109673483A (en) | 2019-02-28 | 2019-02-28 | A kind of fertigation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910150148.6A CN109673483A (en) | 2019-02-28 | 2019-02-28 | A kind of fertigation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109673483A true CN109673483A (en) | 2019-04-26 |
Family
ID=66196103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910150148.6A Withdrawn CN109673483A (en) | 2019-02-28 | 2019-02-28 | A kind of fertigation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109673483A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117307864A (en) * | 2023-09-22 | 2023-12-29 | 宁夏农林科学院农业经济与信息技术研究所 | Water distribution pipe assembly and crop water content data simulation system |
-
2019
- 2019-02-28 CN CN201910150148.6A patent/CN109673483A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117307864A (en) * | 2023-09-22 | 2023-12-29 | 宁夏农林科学院农业经济与信息技术研究所 | Water distribution pipe assembly and crop water content data simulation system |
| CN117307864B (en) * | 2023-09-22 | 2024-05-07 | 宁夏农林科学院农业经济与信息技术研究所 | Water distribution pipe assembly and crop water content data simulation system |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190912 Address after: 266300 Shandong Qingdao Jiaozhou Jiao Bei Street office Liang Ge Zhuang Village Applicant after: Qingdao Kexinde Agriculture Technology Co. Ltd. Address before: 266300 No. 32 Jiaozhou East Road, Jiaozhou City, Qingdao City, Shandong Province Applicant before: Zhang Shi Lan |
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190426 |