CN202867156U - Farmland irrigation and drainage controller capable of preventing water pump electromotor from being damaged due to water-free empty pumping - Google Patents
Farmland irrigation and drainage controller capable of preventing water pump electromotor from being damaged due to water-free empty pumping Download PDFInfo
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- CN202867156U CN202867156U CN 201220476416 CN201220476416U CN202867156U CN 202867156 U CN202867156 U CN 202867156U CN 201220476416 CN201220476416 CN 201220476416 CN 201220476416 U CN201220476416 U CN 201220476416U CN 202867156 U CN202867156 U CN 202867156U
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- resistor
- water
- optical coupler
- switch
- water pump
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Abstract
The utility model discloses a farmland irrigation and drainage controller capable of preventing a water pump electromotor from being damaged due to water-free empty pumping. The farmland irrigation and drainage controller capable of preventing the water pump electromotor from being damaged due to the water-free empty pumping comprises a three-phase alternating current power source, a power source circuit, an alternating current contactor, the water pump electromotor, a first water level detecting electrode, a second water level detecting electrode, a second resistor, a third resistor, a fourth resistor, an electronic switch integrated circuit, a light emitting diode of an optical coupler, a transistor of the optical coupler, a third capacitor, a fifth resistor, a bidirectional trigger diode, a thyristor and an intermediate relay. According to the irrigation and drainage controller capable of preventing the water pump electromotor from being damaged due to the water-free empty pumping, after water in a rice field or a pond or an impounding reservoir is pumped dry, the working power source of the water pump electromotor can be automatically cut off, and the water pump electromotor can be prevented from being damaged due to the water-free empty pumping.
Description
Technical field
The utility model relates to a kind of farmland discharging-irrigating device, relates in particular to a kind of pump motor of avoiding and takes out the farmland discharging-irrigating controller that damages because of anhydrous sky.
Background technique
Present farmland all is equipped with the farmland discharging-irrigating device.When farmland discharging-irrigating, after the water in rice field or the pond was drained by water pump, if in time manually do not cut off the electricity supply, water pump still can be worked, and so not only wastes electric energy, but also may burn out pump motor.
Summary of the invention
The purpose of this utility model provides a kind of pump motor of avoiding to take out the farmland discharging-irrigating controller that damages because of anhydrous sky with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises three-phase alternating-current supply, power circuit, A.C. contactor, pump motor, the first water level detecting electrode, the second water level detecting electrode, the second resistor, the 3rd resistor, the 4th resistor, the electronic switch intergrated circuit, the Light-Emitting Diode (LED) of optical coupler, the transistor of optical coupler, the 3rd capacitor, the 5th resistor, bidirectional trigger diode, thyristor and auxiliary reclay, the first end of the cathode output end of described power circuit and described the second resistor be connected the electrode input end of electronic switch intergrated circuit and be connected, the second end of described the second resistor is connected with described the first water level detecting electrode, the control input end of described electronic switch intergrated circuit respectively with described the second water level detecting electrode be connected the first end of the 3rd resistor and be connected, the second end of described the 3rd resistor respectively with the cathode output end of described power circuit, the negative input of described electronic switch intergrated circuit be connected the negative pole of Light-Emitting Diode (LED) of optical coupler and connect, the positive pole of the Light-Emitting Diode (LED) of described optical coupler is connected and is connected with the control output end of described electronic switch intergrated circuit behind described the 4th resistor, the transistorized collector electrode of described optical coupler is connected with the first end of described the 5th resistor, the transistorized emitter of described optical coupler respectively with the first end of described the 3rd capacitor be connected the first end of bidirectional trigger diode and be connected, the second end of described bidirectional trigger diode is connected with the control end of described thyristor, the first end of described thyristor respectively with the second end of described the 3rd capacitor, the cathode output end of power circuit be connected the neutral line of three-phase alternating-current supply and connect, after the second end of described thyristor and the series connection of described auxiliary reclay respectively with the second end of described the 5th resistor be connected the second live wire of three-phase alternating-current supply and be connected, the normal open switch of described auxiliary reclay is the control switch of described control executive circuit.
Particularly, described farmland discharging-irrigating controller also comprises stop button, start button and thermorelay, the 3rd live wire of described three-phase alternating-current supply and the normally closed switch of described thermorelay be connected A.C. contactor be connected in series rear respectively with the first end of described start button be connected the first end of normal open switch of auxiliary reclay and be connected, the second end of the normal open switch of described auxiliary reclay and described A.C. contactor often open auxiliary switch be connected in series rear respectively with the second end of described start button be connected the first end of stop button and be connected, the second end of described stop button is connected with the second live wire of described three-phase alternating-current supply.
The beneficial effects of the utility model are:
The utility model can in time cut off the working power of pump motor automatically after rice field, pond or retaining pool inner water are drained, can avoid pump motor to take out because of anhydrous sky and damage.
Description of drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1: the utility model comprises three-phase alternating-current supply, power circuit, A.C. contactor KM, pump motor M, the first water level detecting electrode a, the second water level detecting electrode b, the second resistor R2, the 3rd resistor R3, the 4th resistor R4, the electronic switch IC, the Light-Emitting Diode (LED) VL of optical coupler, the transistor VT1 of optical coupler, the 3rd capacitor C3, the 5th resistor R5, bidirectional trigger diode V, thyristor VT, auxiliary reclay KA, stop button S1, start button S2 and thermorelay KR, the cathode output end of power circuit and the first end of the second resistor R2 are connected electrode input end and are connected with the electronic switch IC, the second end of the second resistor R2 is connected with the first water level detecting electrode a, the control input end of electronic switch IC is connected with the first end of the second water level detecting electrode b and the 3rd resistor R3 respectively, the second end of the 3rd resistor R3 respectively with the cathode output end of power circuit, the negative input of electronic switch IC is connected the negative pole of Light-Emitting Diode (LED) VL and is connected with optical coupler, the positive pole of the Light-Emitting Diode (LED) VL of optical coupler is connected and is connected with the control output end of electronic switch IC behind the 4th resistor R4, the collector electrode of the transistor VT1 of optical coupler is connected with the first end of the 5th resistor R5, the emitter of the transistor VT1 of optical coupler is connected first end with the first end of the 3rd capacitor C3 respectively and is connected with bidirectional trigger diode V, the second end of bidirectional trigger diode V is connected with the control end of thyristor VT, the first end of thyristor VT respectively with the second end of the 3rd capacitor C3, the cathode output end of power circuit is connected neutral line N and is connected with three-phase alternating-current supply, being connected the second live wire L3 with three-phase alternating-current supply with the second end of the 5th resistor R5 respectively after the second end of thyristor VT and the auxiliary reclay KA series connection is connected, the 3rd live wire L3 of three-phase alternating-current supply and the normally closed switch KR1 of thermorelay are connected with A.C. contactor KM is connected the first end of normal open switch KM2 with the first end of start button S1 respectively and is connected afterwards with auxiliary reclay, the auxiliary switch KA-1 that often opens of the second end of the normal open switch KM2 of auxiliary reclay and A.C. contactor is connected in series and is connected first end with stop button S2 with the second end of start button S1 respectively and is connected afterwards, and the second end of stop button S2 is connected with the second live wire L2 of three-phase alternating-current supply.
As shown in Figure 1, working principle of the present utility model is as follows:
Connect knife-like switch Q, press S2 after, the KM adhesive of switching on, it often opens auxiliary switch KM2 adhesive, the pump motor M work of switching on.In this simultaneously, the 220V alternating voltage between phase line L2 and the neutral line N produces the 9V VDC after decompression capacitor C1 step-down, the first commutation diode VD1 and the second commutation diode VD2 rectification, reference diode VS voltage stabilizing and filter capacitor C2 filtering.This voltage one tunnel directly adds to the electrode input end of electronic switch IC; Another road is through resistor R2 and water level detecting electrode a, the resistance of water adds to the control input end of electronic switch IC between the water level detecting electrode b, the electronic switch of electronic switch IC inside is connected, the output voltage of its control output end is through the transphasor conducting of the 4th resistor R4 with optical coupler VLC inside, the high level of its emitter output adds to the gate pole of thyristor VT by bidirectional trigger diode V, thyristor VT is triggered and conducting, the auxiliary reclay KA adhesive of switching on, its normal open switch KA-1 conducting makes A.C. contactor KM unclamp at start button S2 and still is locked as attracting state after resetting.
After draining under the water quilt in rice field or the pond, resistance between water level detecting electrode a, the water level detecting electrode b increases, make the control output end of electronic switch IC become low level, its inner electronic switch disconnects, optical coupler VLC and thyristor VT cut-off, auxiliary reclay KA and A.C. contactor KM outage discharge, and pump motor M quits work.
Claims (2)
1. can avoid pump motor to take out the farmland discharging-irrigating controller that damages because of anhydrous sky for one kind, it is characterized in that: comprise three-phase alternating-current supply, power circuit, A.C. contactor, pump motor, the first water level detecting electrode, the second water level detecting electrode, the second resistor, the 3rd resistor, the 4th resistor, the electronic switch intergrated circuit, the Light-Emitting Diode (LED) of optical coupler, the transistor of optical coupler, the 3rd capacitor, the 5th resistor, bidirectional trigger diode, thyristor and auxiliary reclay, the first end of the cathode output end of described power circuit and described the second resistor be connected the electrode input end of electronic switch intergrated circuit and be connected, the second end of described the second resistor is connected with described the first water level detecting electrode, the control input end of described electronic switch intergrated circuit respectively with described the second water level detecting electrode be connected the first end of the 3rd resistor and be connected, the second end of described the 3rd resistor respectively with the cathode output end of described power circuit, the negative input of described electronic switch intergrated circuit be connected the negative pole of Light-Emitting Diode (LED) of optical coupler and connect, the positive pole of the Light-Emitting Diode (LED) of described optical coupler is connected and is connected with the control output end of described electronic switch intergrated circuit behind described the 4th resistor, the transistorized collector electrode of described optical coupler is connected with the first end of described the 5th resistor, the transistorized emitter of described optical coupler respectively with the first end of described the 3rd capacitor be connected the first end of bidirectional trigger diode and be connected, the second end of described bidirectional trigger diode is connected with the control end of described thyristor, the first end of described thyristor respectively with the second end of described the 3rd capacitor, the cathode output end of power circuit be connected the neutral line of three-phase alternating-current supply and connect, after the second end of described thyristor and the series connection of described auxiliary reclay respectively with the second end of described the 5th resistor be connected the second live wire of three-phase alternating-current supply and be connected, the normal open switch of described auxiliary reclay is the control switch of described control executive circuit.
2. the pump motor of avoiding according to claim 1 is taken out the farmland discharging-irrigating controller that damages because of anhydrous sky, it is characterized in that: described farmland discharging-irrigating controller also comprises stop button, start button and thermorelay, the 3rd live wire of described three-phase alternating-current supply and the normally closed switch of described thermorelay be connected A.C. contactor be connected in series rear respectively with the first end of described start button be connected the first end of normal open switch of auxiliary reclay and be connected, the second end of the normal open switch of described auxiliary reclay and described A.C. contactor often open auxiliary switch be connected in series rear respectively with the second end of described start button be connected the first end of stop button and be connected, the second end of described stop button is connected with the second live wire of described three-phase alternating-current supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220476416 CN202867156U (en) | 2012-09-19 | 2012-09-19 | Farmland irrigation and drainage controller capable of preventing water pump electromotor from being damaged due to water-free empty pumping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220476416 CN202867156U (en) | 2012-09-19 | 2012-09-19 | Farmland irrigation and drainage controller capable of preventing water pump electromotor from being damaged due to water-free empty pumping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867156U true CN202867156U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220476416 Expired - Fee Related CN202867156U (en) | 2012-09-19 | 2012-09-19 | Farmland irrigation and drainage controller capable of preventing water pump electromotor from being damaged due to water-free empty pumping |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671049A (en) * | 2012-09-20 | 2014-03-26 | 四川聚友生态农业科技有限公司 | Farmland irrigation and drainage controller capable of avoiding pump motor from being damaged caused by water-free pumping |
| CN106545489A (en) * | 2016-09-30 | 2017-03-29 | 广西大学 | A kind of water pump drains the protection circuit of autostop |
| CN110388314A (en) * | 2019-07-04 | 2019-10-29 | 岭东核电有限公司 | Nuclear power station Spent Radioactive water filtration device and its control device |
-
2012
- 2012-09-19 CN CN 201220476416 patent/CN202867156U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671049A (en) * | 2012-09-20 | 2014-03-26 | 四川聚友生态农业科技有限公司 | Farmland irrigation and drainage controller capable of avoiding pump motor from being damaged caused by water-free pumping |
| CN106545489A (en) * | 2016-09-30 | 2017-03-29 | 广西大学 | A kind of water pump drains the protection circuit of autostop |
| CN110388314A (en) * | 2019-07-04 | 2019-10-29 | 岭东核电有限公司 | Nuclear power station Spent Radioactive water filtration device and its control device |
| CN110388314B (en) * | 2019-07-04 | 2020-11-24 | 岭东核电有限公司 | Nuclear power station radioactive wastewater filtering equipment and control device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20130919 |