CN207754083U - Venturi variable fertilizer applicator based on adjustable speed water pump - Google Patents
Venturi variable fertilizer applicator based on adjustable speed water pump Download PDFInfo
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- CN207754083U CN207754083U CN201721872218.1U CN201721872218U CN207754083U CN 207754083 U CN207754083 U CN 207754083U CN 201721872218 U CN201721872218 U CN 201721872218U CN 207754083 U CN207754083 U CN 207754083U
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Abstract
The utility model discloses a kind of venturi variable fertilizer applicators based on adjustable speed water pump, each or every group of fertilising in the utility model, the import for applying Venturi tube on sour channel are respectively adopted adjustable speed water pump and provide pressure, by the lift for adjusting adjustable speed water pump, make each or every group of fertilising, the Venturi tube inlet pressure of applying sour channel is adjusted, realize the fertilising of the real-time control without dead smooth, apply sour amount.Apply fertilizer, apply sour channel can single (single group) or it is multiple it is (multigroup) work at the same time, do not interfere with each other.The closed loop that may be implemented to irrigate rich water EC values and pH value with EC values and pH sensor and fertilising machine controller cooperation is precisely controlled.
Description
Technical field
The utility model is related to a kind of automatic precisely water-fertilizer integral device, especially provide a kind of based on adjustable speed water pump
Venturi variable fertilizer applicator.
Background technology
Accurate water-fertilizer integral irrigation technique is arranged as comprehensive management technology the most key in modern agricultural production technology
It applies, it is to be injected into fertilizer in irrigation water with formula appropriate, and progress synchronous with irrigation of applying fertilizer substantially increases the utilization of liquid manure
Efficiency and the yield and quality for significantly improving crop so that the edges area such as arid area and semiarid zone realizes
Agricultural year, at present fertigation technology be widely used in developed country, such as Israel, Holland, almost gardening used
Water-fertilizer integral irrigating facility is all used, this technology is still in starting in China, promotes the stage, needs to be ground there are many problem
Study carefully and discusses.Realize that modern agriculture, water-fertilizer integral are the only way which must be passed.
The core of water-fertilizer integral irrigation technique be fertilizer apparatus, existing fertilizer apparatus mainly by：High-frequency electromagnetic valve, Wen Qiu
In pipe and fertilizer applicator feed pump composition.Main operational principle is to provide pressure difference by fertilizer applicator feed pump for Venturi tube, is passed through
Venturi principle generates pull of vacuum, inhales fertilizer from fertilizer storage tank neutralizing acid storage tank, inhales acid.PWM control modes are used simultaneously
Control high-frequency electromagnetic valve frequently switches on suction fertilizer, inhales sour channel to realize variable fertilization, apply sour purpose.
Existing fertilizer apparatus has the following disadvantages：
1, high-frequency electromagnetic valve is of high cost, frequently switches on high failure rate, and valve body is in direct contact the solution of high concentration, acid solution, valve
Core is easy to block or corrosion, maintenance cost are high.
2, the variation of fertilizer applicator feed pump pressure and flow all becomes the disturbance factor that Venturi tube inhales fertile flow so that
System stability is deteriorated.
3, when needing multiple fertilisings, applying sour channel, the pressure source in each channel is the same fertilizer applicator feed pump, no
Venturi tube inlet pressure can be adjusted separately and inhale fertilizer, the sour flow of suction to control, the PWM control modes of high-frequency electromagnetic valve can only be passed through
Carry out the time scale of regulating switch, if wherein one or more channels need not apply fertilizer, hydraulic pressure, which still consumes, not to work
Venturi tube and high-frequency electromagnetic valve at, big energy has been lost.
4, this control modes frequently switched on of PWM make with the big inertia mechanical execution unit of fertilizer apparatus and load matched
System response time is elongated, and EC values and the pH value control effect error for irrigating rich water are big, and Con trolling index cyclic fluctuation is apparent, surely
Qualitative difference.Therefore the optimization research and development of fertilising machine equipment become the critical issue for being badly in need of solving.
Utility model content
For existing fertilizer applicator high-frequency electromagnetic valve high failure rate, spool is easy to block and multiple apply sour channel and adopt
With a pressure source, pressure cannot be adjusted separately, high energy consumption the shortcomings of, the utility model proposes based on adjustable speed water pump
Venturi variable fertilizer applicator.Each or every group of fertilising in the utility model, the import for applying Venturi tube on sour channel are adopted respectively
Pressure is provided with adjustable speed water pump, by adjusting the lift of adjustable speed water pump, the literary mound for making each or every group of fertilising, applying sour channel
In pipe inlet pressure be adjusted, realize without dead smooth real-time control fertilising, apply sour amount.Apply fertilizer, apply sour channel can be single
(single group) or it is multiple it is (multigroup) work at the same time, do not interfere with each other.It can be with EC values and pH sensor and fertilising machine controller cooperation
Realize that the closed loop for irrigating rich water EC values and pH value is precisely controlled.
The technical solution of the utility model is：Venturi variable fertilizer applicator based on adjustable speed water pump, including：Water inlet is floating
Ball valve 1, liquid manure premix tank 5, low liquid level switch 6, adjustable speed water pump 7, Venturi tube 8, irrigates electromagnetism at fertilizer applicator feed pump 3
Valve group 10；
The liquid manure premix tank 5 is connected with inlet pipeline 100, outlet pipeline 200, several fertilising channels 300 and applies
Sour channel 400；The inlet pipeline 100 is equipped with water inlet ball-cock assembly 1；The outlet pipeline 200 is equipped with fertilizer applicator feed pump 3
With irrigation solenoid valve block 10；It several described fertilising channels 300 and applies and is equipped with adjustable speed water pump 7 and Wen Qiu in sour channel 400
In pipe 8；5 lower part of liquid manure premix tank is equipped with low liquid level switch 6.
Further, the fertilizer apparatus further includes fertilising machine controller 2, EC values sensor and pH sensor 4, flow
Meter 9；The EC values sensor and pH sensor 4 are set on outlet pipeline 200；It is logical that the flowmeter 9 is set to several fertilisings
It road 300 and applies in sour channel 400；The fertilising machine controller 2 respectively with EC values sensor and pH sensor 4, fertilising owner
Water pump 3, low liquid level switch 6, adjustable speed water pump 7 and irrigation solenoid valve block 10 are electrically connected.
The utility model has following beneficial effect：
1, adjustable speed water pump is not in direct contact with the solution of high concentration, acid solution, and failure rate is low, easy to maintain.It avoids existing
There is fertilizer applicator high-frequency electromagnetic valve of high cost, high failure rate, valve body is in direct contact the solution of high concentration, acid solution, and spool is easy to block
Or the shortcomings of corrosion.
2, venturi tube inlet pressure source is provided by adjustable speed water pump, mutual indepedent with fertilizer applicator feed pump, reduces text
Venturi inhales the disturbance factor of fertile flow so that system is more stablized.Avoid the pressure and flow of existing fertilizer applicator feed pump
Variation disturbed Venturi tube and inhale fertile flow so that the shortcomings that system stability is deteriorated.
3, the inlet pressure of Venturi tube is adjusted by controlling adjustable speed water pump, each or every group of fertilising can be made, applied
Sour channel individually or simultaneously works, and unwanted fertilising channel is reliably closed, and saves energy loss.
4, due to using no dead smooth adjustable speed water pump, only carrying out micro regulation and control in control targe a small range, being more suitable for
Match with the big inertia mechanical execution unit of fertilizer applicator and load, and cyclic fluctuation, EC values and pH is not present in Con trolling index
Value control stability is good, and error is small.
5, fertilising can be arbitrarily increased or decreased as needed, apply sour channel, and not any to the operation of whole system
It influences.Existing fertilizer applicator is avoided because increasing fertilising, applying the shadow to fertilizer applicator feed pump water yield and discharge pressure behind sour channel
It rings.
6, in the utility model control, closed-loop degeneration factor is formed, realization is precisely controlled；The letter of controller operation simultaneously
Single efficient, product has higher practical value, easy to utilize.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the electric diagram of electrical system in the utility model；
Fig. 3 is tradition PWM control modes and the utility model control mode curve comparison figure；
In figure：1, water inlet ball-cock assembly；2, apply fertilizer machine controller；3, fertilizer applicator feed pump；4, EC values sensor and pH value pass
Sensor；5, liquid manure premix tank；6, low liquid level switchs；7, adjustable speed water pump；8, Venturi tube；9, flowmeter；10, electromagnetism is irrigated
Valve group；100, inlet pipeline；200, outlet pipeline；300, fertilising channel；400, sour channel is applied；500, for water end (W.E.)；600, liquid manure
Feed end；700, sour feed end.
Specific implementation mode
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the venturi variable fertilizer applicator based on adjustable speed water pump, including：Water inlet ball-cock assembly 1, fertilizer applicator
It is controller 2, fertilizer applicator feed pump 3, EC values sensor and pH sensor 4, liquid manure premix tank 5, low liquid level switch 6, adjustable
Fast water pump 7, flowmeter 9, irrigates solenoid valve block 10 at Venturi tube 8；
Liquid manure premix tank 5 is connected with inlet pipeline 100, outlet pipeline 200, several fertilising channels 300 and applies sour logical
Road 400；Inlet pipeline 100 is equipped with water inlet ball-cock assembly 1；Outlet pipeline 200 is equipped with fertilizer applicator feed pump 3, EC value sensors
With pH sensor 4, irrigation solenoid valve block 10；EC values sensor and pH sensor 4 are discharged mounted on fertilizer applicator feed pump 3
At mouthful；It several fertilising channels 300 and applies and is equipped with adjustable speed water pump 7, Venturi tube 8 and flowmeter 9 in sour channel 400；It can
7 water outlet of adjustable speed water pump is connected by pipe fitting with 8 water inlet of Venturi tube, and 8 water outlet of Venturi tube is pre- with liquid manure by pipe fitting
Blending tank 5 is connected；5 lower part of liquid manure premix tank is equipped with low liquid level switch 6.
It applies fertilizer machine controller 2 and EC values sensor and pH sensor 4, fertilizer applicator feed pump 3, low liquid level switch 6, adjustable
Fast water pump 7 and irrigation 10 electrical connection of solenoid valve block are as follows：
1, the EC values sensor with electrical signal interface, pH sensor 4 are connected to fertilising machine controller 2；
2, the electrical control signal of fertilizer applicator main pump 3 is connected to fertilising machine controller 2；
3,6 electric signal of low liquid level switch is connected to fertilising machine controller 2；
4, adjustable speed water pump 7 drives electric interfaces to be connected to fertilising machine controller 2；
5, fertilising machine controller 2 is used to connect there are digital interface irrigates solenoid valve block 10, and solenoid valve block is irrigated in control
10 break-makes realize rotation flow.
The utility model can by apply fertilizer machine controller 2 man-machine interface setting irrigate entry condition, irrigate duration or
Duty concurrently sets the concentration of fertilizer (EC values) and acid-base value (pH value) of irrigation water.
When starting fertigation, liquid manure premix tank 5 is flowed by ball-cock assembly 1 of intaking first for water end (W.E.) irrigation water, when
When water level is higher than low liquid level switch 6 in liquid manure premix tank 5, fertilising machine controller 2 starts fertilising channel 300 and applies sour channel
Adjustable speed water pump 7 in 400, via controller software delay T1 start fertilizer applicator feed pump 3, then via controller software delay T2
It opens and irrigates solenoid valve block 10, system starts fertigation.
When water level reaches into 1 water level upper limit position of water ball-cock assembly in liquid manure premix tank 5, water inlet ball-cock assembly 1 closes automatically
It closes, stops adding water into liquid manure premix tank 5.After setting water level of the water level decreasing to water inlet ball-cock assembly 1, ball-cock assembly 1 is opened,
From moisturizing in trend liquid manure premix tank 5.
When water level is less than low liquid level switch 6 in liquid manure premix tank 5, fertilising machine controller 2 closes fertilising owner immediately
Water pump 3 and adjustable speed water pump 7 ensure that all water pumps are unable to free-runing operation.
The EC values sensor of fertilizer applicator water outlet and 4 instantaneous value of pH sensor feed back to fertilising machine controller 2 simultaneously, apply
Fertile machine controller 2 carries out pid control computation according to the desired value set in the EC values, pH value and controller of these Real-time Feedbacks,
Operation output result is converted into rotary speed setting value and is used to control fertilising channel 300, applies the adjustable speed water pump 7 in sour channel 400, from
And 8 inlet pressure of Venturi tube can be accurately controlled, the accurate closed-loop control for realizing fertilising, applying sour flow.
When the fertilizer applicator is operated in the manual mode under no EC values sensor and the participation of pH sensor 4, Ke Yitong
The rotating speed of fertilising 2 man-machine interface manual setting adjustable speed water pump 7 of machine controller is crossed, fertilising is manually controlled to realize, applies acid
Flow.
As shown in Fig. 2, EC values sensor and pH sensor 4, irrigation solenoid valve block 10 with electric interfaces, low liquid level
Switch 6, the electrical control signal of fertilizer applicator feed pump 3, adjustable speed water pump 7 are all connected on fertilising machine controller 2.In system
In addition to fertilizer applicator feed pump 3, it is all made of direct current or ac low-voltage power supply, ensures the Electrical Safety in operating process.
Above-described embodiment is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement according to this, the scope of protection of the utility model can not be limited with this.
It is all according to equivalent change or modification made by the spirit of the present invention essence, should all cover the scope of protection of the utility model it
It is interior.
Claims (2)
1. the venturi variable fertilizer applicator based on adjustable speed water pump, which is characterized in that including：Water inlet ball-cock assembly (1), fertilizer applicator
Feed pump (3), low liquid level switch (6), adjustable speed water pump (7), Venturi tube (8), irrigates solenoid valve at liquid manure premix tank (5)
Group (10)；
The liquid manure premix tank (5) is connected with inlet pipeline (100), outlet pipeline (200), several fertilisings channel (300)
With apply sour channel (400)；The inlet pipeline (100) is equipped with water inlet ball-cock assembly (1)；The outlet pipeline (200) is equipped with
Fertilizer applicator feed pump (3) and irrigation solenoid valve block (10)；Described several apply fertilizer channel (300) and apply in sour channel (400)
Equipped with adjustable speed water pump (7) and Venturi tube (8)；Liquid manure premix tank (5) lower part is equipped with low liquid level and switchs (6).
2. the venturi variable fertilizer applicator described in accordance with the claim 1 based on adjustable speed water pump, which is characterized in that described to apply
Fertile device further includes fertilising machine controller (2), EC values sensor and pH sensor (4), flowmeter (9)；The EC values sensing
Device and pH sensor (4) are set on outlet pipeline (200)；The flowmeter (9) is set to several fertilisings channel (300) and applies
In sour channel (400)；The fertilising machine controller (2) respectively with EC values sensor and pH sensor (4), fertilizer applicator feed pump
(3), low liquid level switch (6), adjustable speed water pump (7) and irrigation solenoid valve block (10) are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721872218.1U CN207754083U (en) | 2017-12-28 | 2017-12-28 | Venturi variable fertilizer applicator based on adjustable speed water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721872218.1U CN207754083U (en) | 2017-12-28 | 2017-12-28 | Venturi variable fertilizer applicator based on adjustable speed water pump |
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| Publication Number | Publication Date |
|---|---|
| CN207754083U true CN207754083U (en) | 2018-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721872218.1U Active CN207754083U (en) | 2017-12-28 | 2017-12-28 | Venturi variable fertilizer applicator based on adjustable speed water pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107980324A (en) * | 2017-12-28 | 2018-05-04 | 王伟宏 | Venturi variable fertilizer applicator based on adjustable speed water pump |
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2017
- 2017-12-28 CN CN201721872218.1U patent/CN207754083U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107980324A (en) * | 2017-12-28 | 2018-05-04 | 王伟宏 | Venturi variable fertilizer applicator based on adjustable speed water pump |
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