CN202531408U - Automatic water pumping device - Google Patents

Automatic water pumping device Download PDF

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Publication number
CN202531408U
CN202531408U CN2012200917089U CN201220091708U CN202531408U CN 202531408 U CN202531408 U CN 202531408U CN 2012200917089 U CN2012200917089 U CN 2012200917089U CN 201220091708 U CN201220091708 U CN 201220091708U CN 202531408 U CN202531408 U CN 202531408U
Authority
CN
China
Prior art keywords
relay
resistance
output terminal
normally opened
opened contact
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.)
Expired - Fee Related
Application number
CN2012200917089U
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Chinese (zh)
Inventor
卢俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHONGQING JUNENG CONSTRUCTION GROUP Co Ltd
CHONGQING QIANNIU CONSTRUCTION ENGINEERING Co Ltd
Original Assignee
CHONGQING JUNENG CONSTRUCTION GROUP Co Ltd
CHONGQING QIANNIU CONSTRUCTION ENGINEERING Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHONGQING JUNENG CONSTRUCTION GROUP Co Ltd, CHONGQING QIANNIU CONSTRUCTION ENGINEERING Co Ltd filed Critical CHONGQING JUNENG CONSTRUCTION GROUP Co Ltd
Priority to CN2012200917089U priority Critical patent/CN202531408U/en
Application granted granted Critical
Publication of CN202531408U publication Critical patent/CN202531408U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an automatic water pumping device, which belongs to the field of automatic control. In the automatic water pumping device, a water level sensor transmits a voltage signal to a trigger circuit when the water level sensor touches water; the trigger circuit outputs a low level to a relay; the relay is actuated, and a first auxiliary normally open contact of the relay used for controlling a water pump control switch is also closed; the water pump control switch is turned on; and a water pump motor starts water pumping. According to the automatic water pumping device, the unmanned automatic water pumping is realized; the overflow is avoided; and as the water level sensor is adopted to monitor the water level, the accuracy of the automatic water pumping is improved.

Description

Automatic water plug
Technical field
The utility model relates to a kind of automatic water plug, particularly a kind of automatic water plug based on level sensor.
Background technique
At present, the major-minor sump under coal mine and the interim sump of working surface and other work sump, spilling water happens occasionally with empty phenomenon of taking out.The sky not only loss water pump of process of finding time is also wasted power supply simultaneously.And taking place, spilling water will bring direct harm to normal operation.In addition, these sump all need be established special messenger's nurse and operation.
The model utility content
The goal of the invention of the utility model is: to the problem of above-mentioned existence; A kind of automatic water plug is provided, has realized that nobody draws water automatically, avoided occurring the spilling water phenomenon; And adopt level sensor that water level is monitored, improved the accuracy of drawing water automatically.
The technological scheme that the utility model adopts is such: a kind of automatic water plug; Comprise ac power supply, water pump control switch and pump motor (M); Wherein said ac power supply is used for to pump motor (M) supply voltage being provided through this water pump control switch; It is characterized in that: also comprise first transformer (T1), second transformer (T2), bridge rectifier (D1, D2, D3 and D4), level sensor, trigger circuit and relay (KV); Wherein this water pump control switch comprises contactor (K), and this relay (KV) has the first auxiliary normally opened contact (K1);
Said ac power supply connects pump motor (M) through contactor (K) and connects the input end of this first transformer (T1); First output terminal of this first transformer (T1) is connected through the two ends of contactor (K) with the first auxiliary normally opened contact (K1) of relay (KV); And first output terminal of this first transformer (T1), second output terminal connect first input end, second input end of second transformer (T2) respectively, and the output terminal of this second transformer (T2) connects the input end of bridge rectifier (D1, D2, D3 and D4);
Said trigger circuit comprise time-base integrated circuit (U1), first resistance (R1), second resistance (R2), the 3rd resistance (R3) and the 4th resistance (R4); Wherein second end (Y) of level sensor passes through the 4th resistance (R4) and the 3rd resistance (R3) ground connection through this first resistance (R1), second resistance (R2) and the 3rd resistance (R3) ground connection and the 3rd end (Z) successively successively; This first resistance (R1) is connected the threshold values input end (TH) of this time-base integrated circuit (U1) with the connected node of second resistance (R2); Second resistance (R2) is connected the triggering input end (TR) of this time-base integrated circuit (U1) with the connected node of the 3rd resistance (R3); And the grounding end of this time-base integrated circuit (GND) ground connection, output terminal (OUT) connects second end of this relay (KV);
First output terminal of said bridge rectifier (D1, D2, D3 and D4) is connected first end of relay (KV), first end (X) of level sensor, the power end (Vcc) and the reset terminal (RES) of this time-base integrated circuit (U1), second output head grounding of this bridge rectifier (D1, D2, D3 and D4) respectively.
When pump motor M begins to draw water; The first end X of level sensor, the second end Y and the 3rd end Z all contact with water when level sensor touches water, and the 3rd end Z of level sensor is communicated with the first end X under the effect of water, and the triggering input end TR of time-base integrated circuit U1 obtains certain voltage; And the second end Y of level sensor and the first also conducting of end X; The threshold values input end TH of time-base integrated circuit U1 also obtains certain voltage, and the output terminal OUT output low level of time-base integrated circuit U1 is given second end of relay K V, because first end of relay K V is a high level; Relay K V adhesive this moment, and the first auxiliary normally opened contact K1 of this relay K V is closed.Contactor K adhesive when first of this relay K V assists normally opened contact K1 closed, pump motor M begins to draw water, and has realized thus drawing water automatically, avoids occurring the spilling water phenomenon.
Contactor (K) has the 3rd auxiliary normally opened contact (K3) in this water pump control switch, and the 3rd auxiliary normally opened contact (K3) of this contactor (K) is parallelly connected with the first auxiliary normally opened contact (K1) of relay (KV).When pump motor M makes level sensor leave the water surface water extraction; The second end Y of level sensor, the 3rd end Z all are not communicated with the first end X; The threshold values input end TH of time-base integrated circuit U1, triggering input end TR obtain the voltage of 0V; The high level of the output terminal OUT of this time-base integrated circuit output at this moment, relay K V break off and its first auxiliary normally opened contact K1 also breaks off, because the 3rd of contactor K the auxiliary normally opened contact K3 is in closed state at this moment; Contactor K can not break off, and therefore pump motor M still is in the state of drawing water when level sensor leaves the water surface.
This automatic water plug comprises that also contactor (K) also has the 4th auxiliary normally opened contact (K4) in the time relay and this water pump control switch, and first end of the 4th auxiliary normally opened contact (K4) connects first output terminal of bridge rectifier (D1, D2, D3 and D4) and second end of the second end connect hours relay;
The 3rd end of this time relay connects second output terminal of first transformer (T1), and the 4th end of this time relay connects this contactor (K).
In pump motor M pump process, its 3rd auxiliary normally opened contact K3, the 4th auxiliary normally opened contact K4 also are in closed state during contactor K adhesive.The 3rd end of the time relay and the original state of the 4th end are on state, and bridge rectifier provides a high level to second end of the time relay when the 4th auxiliary normally opened contact K4 is closed, and the time relay picks up counting.
After time relay timing is accomplished; The 3rd end of this time relay and the 4th end break off; Contactor K breaks off, and the 3rd auxiliary normally opened contact K3 of this contactor K and the 4th auxiliary normally opened contact K4 disconnection, and pump motor M stops pumping; Realized stopping automatically of pump process thus, avoided occurring sky and take out phenomenon.
This relay (KV) also has the second auxiliary normally opened contact (K2); First output terminal of this bridge rectifier (D1, D2, D3 and D4) is connected first end of first tutorial light (LED1) through this second auxiliary normally opened contact (K2), and second end of this first tutorial light (LED1) passes through the 5th resistance (R5) ground connection.This first tutorial light LED1 is used to show the water state that touches of level sensor: the first tutorial light LED1 lights when level sensor touches water, otherwise extinguishes.
First output terminal of this bridge rectifier (D1, D2, D3 and D4) is successively through the 6th resistance (R6), second tutorial light (LED2) ground connection.This second tutorial light LED2 is used for the display power supply state.
The 7th end of this time relay passes through the 8th end of the 3rd tutorial light (LED3), the 7th resistance (R7) connect hours relay successively.The 3rd tutorial light LED3 is used to show the time status of the time relay: the 3rd tutorial light LED3 lights when the time, relay was in time status, otherwise extinguishes.
This water pump control switch also comprises comprehensive protector of motor (JDB), stop button (S1) and starting button (S2); Wherein this comprehensive protector of motor (JDB) is connected pump motor (M) and contactor (K), and first output terminal of this first transformer (T1) passes through this comprehensive protector of motor (JDB) successively, contactor (K) is connected the back and is connected with the starting button (S2) of parallel connection, the first auxiliary normally opened contact (K1) of relay (KV), the 3rd auxiliary normally opened contact (K3) of contactor (K) with stop button (S1).This comprehensive protector of motor JDB is used for to pump motor M protection being provided, and this stop button S1 and this starting button S2 are respectively applied for and are breaking down or stopping, starting this automatic water plug during problem manually.
The negative pole of anodal and the 5th diode (D5) of output terminal (OUT) connection the 5th diode (D5) of this time-base integrated circuit (U1) connects first output terminal of bridge rectifier (D1, D2, D3 and D4).The 5th diode D5 can prevent current reflux.
First output terminal of this bridge rectifier is through second electric capacity (C2) ground connection.
In sum, owing to adopted technique scheme, the beneficial effect of the utility model is:
1, adopts level sensor, trigger circuit and relay to realize drawing water automatically, avoid occurring the spilling water phenomenon, and water level is monitored, improved the accuracy of drawing water automatically;
2, contactor has the 3rd auxiliary normally opened contact in this water pump control switch, has guaranteed that pump motor also is in the state of drawing water when level sensor is in dried up state;
3, adopt the time relay and this contactor also to have the 4th auxiliary normally opened contact, guarantee after pump motor draws water a period of time, to stop pumping, that has realized drawing water stops automatically, avoids occurring sky and takes out phenomenon;
4, this relay has the second auxiliary normally opened contact and first tutorial light, is used to show the water state that touches of level sensor by this first tutorial light;
5, adopt second tutorial light to come the display power supply on-state;
6, adopt the 3rd tutorial light to show the time status of the time relay;
7, this comprehensive protector of motor JDB is used for to pump motor M protection being provided, and this stop button S1 and this starting button S2 are respectively applied for and are breaking down or stopping, starting this automatic water plug during problem manually;
8, the output terminal at time-base integrated circuit increases by the 5th diode, is used to prevent current reflux.
Description of drawings
Fig. 1 is the circuit diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
For the purpose, technological scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 1; This automatic water plug comprises ac power supply, water pump control switch, pump motor M, the first transformer T1, the second transformer T2, bridge rectifier, level sensor, trigger circuit, the time relay and relay K V; Wherein this water pump control switch employing model is the vacuum switch of QBZ-80; This water pump control switch is made up of contactor K, comprehensive protector of motor JDB, stop button S1 and starting button S2, and this relay K V has the first auxiliary normally opened contact K1.
Ac power supply connects pump motor M through contactor K, comprehensive protector of motor JDB successively, and this ac power supply also connects the input end of the first transformer T1.First output terminal of this first transformer T1 connects starting button S2 through comprehensive protector of motor JDB, contactor K, stop button S1 successively, and the first auxiliary normally opened contact K1 of relay K V is parallelly connected with starting button S2.First output terminal of this first transformer T1 connects the first input end of the second transformer T2 through starting button S2, and second output terminal of this first transformer T1 connects second input end of this second transformer T2.This first transformer T1 is used for converting supply voltage into first voltage and offers the second transformer T2.
The output terminal of the second transformer T2 connects the input end of bridge rectifier, and this second transformer T2 is used for first voltage transitions is second voltage and after the bridge rectifier rectification, exports.This bridge rectifier is made up of four diodes in the utility model: the first diode D1 back of connecting with the 3rd diode D3 is parallelly connected with the second diode D2 that connects, the 4th diode D4; Wherein the series connection node of the first diode D1 and the 3rd diode D3 is the first input end of this bridge rectifier; The series connection node of the second diode D2 and the 4th diode D4 is second input end of this bridge rectifier; The connected node of the first diode D1 and the second diode D2 is first output terminal of this bridge rectifier, and the connected node of the 3rd diode D3 and the 4th diode D4 is second output terminal of this bridge rectifier.
These trigger circuit are made up of time-base integrated circuit U1, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th diode D5 and first capacitor C 1 in the utility model; Wherein the second end Y of level sensor is connected with first capacitor C 1 of ground connection and successively through first resistance R 1, second resistance R 2 and the 3rd resistance R 3 ground connection; The 3rd end Z of level sensor is successively through the 4th resistance R 4, the 3rd resistance R 3 ground connection; Wherein this first resistance R 1 is connected the threshold values input end TH of time-base integrated circuit U1 with the connected node of second resistance R 2; Second resistance R 2 is connected the triggering input end TR of time-base integrated circuit U1 with the connected node of the 3rd resistance R 3; And the grounding end GND ground connection of time-base integrated circuit U1, output terminal OUT connects second end of relay K V.First output terminal of this bridge rectifier connects first end of relay K V, the first end X of level sensor, power end Vcc and the reset terminal RES of time-base integrated circuit U1 respectively, and second output head grounding of this bridge rectifier.The negative pole that the output terminal OUT of time-base integrated circuit U1 connects anodal and the 5th diode D3 of the 5th diode D5 connects first output terminal of bridge rectifier.In addition, the first end X of level sensor, the second end Y and the 3rd end Z adopt the material with electric conductivity to process, and this three end also touches water when level sensor touches water.
The contactor K of this water pump control switch has the 3rd auxiliary normally opened contact K3 in the utility model, and the 3rd auxiliary normally opened contact K3 of contactor K is parallelly connected with the first auxiliary normally opened contact K1 of relay K V.
In addition, this contactor K also has the 4th auxiliary normally opened contact K4, and first output terminal of this bridge rectifier is assisted second end of normally opened contact K4 connect hours relay successively through the 4th of stop button S1, contactor K; The 3rd end of this time relay is connected the first input end of the first transformer T1 successively through starting button S2, stop button S1, contactor K and comprehensive protector of motor JDB, and the 4th end of this time relay connects second input end of the first transformer T1.
This relay K V also has the second auxiliary normally opened contact K2; First output terminal of bridge rectifier connects first end of the first tutorial light LED1 through the second auxiliary normally opened contact K2 of relay K; And second end of this first tutorial light LED1 is through the 5th resistance R 5 ground connection; This first tutorial light LED1 is used to show the water state that touches of level sensor: the first tutorial light LED1 lights when level sensor touches water, otherwise extinguishes.Through the 6th resistance R 6, the second tutorial light LED2 ground connection, this second tutorial light LED2 is used for the display power supply state to bridge rectifier successively.In addition; The 7th end of the time relay connects the 8th end through the 3rd tutorial light LED3, the 7th resistance R 7 successively; The 3rd tutorial light LED3 is used to show the time status of the time relay: the 3rd tutorial light LED3 lights when the time, relay was in time status, otherwise extinguishes.Therefore, the utility model can be observed the pump process of pump motor M more intuitively.
The working principle of the utility model is: the first transformer T1 provides first voltage to the second transformer T2; The second transformer T2 offers first end of relay K, the first end X of level sensor, power end Vcc and the reset terminal RES of time-base integrated circuit U1 after this first voltage transitions is become second voltage; And the second tutorial light LED2 lights, and display power supply is connected.
The first end X of level sensor, the second end Y and the 3rd end Z all touch water when level sensor touches water; The 3rd end Z and the first end X conducting under the electric action of water; The triggering input end TR of time-base integrated circuit U1 obtains certain voltage, and the second end Y and the first end X conducting, and the threshold values input end TH of time-base integrated circuit U1 also obtains certain voltage; The output terminal OUT output low level of time-base integrated circuit U1 is given second end of relay K V; Because first end of relay K V is a high level, relay K V adhesive this moment, and the first auxiliary normally opened contact K1 of this relay K V and the second auxiliary normally opened contact K2 closure.Contactor K adhesive when first of this relay K V assists normally opened contact K1 closed, pump motor M begins to draw water automatically; The first tutorial light LED1 lights when second of this relay K V assists normally opened contact K2 closed, and the demonstration level sensor is in and touches water state.In addition, the 3rd of contactor K the auxiliary normally opened contact K3 and the 4th auxiliary normally opened contact K4 are closed in the time of contactor K adhesive.The 3rd end of the time relay and the original state of the 4th end are on state; Second transformer provides high level to second end of the time relay when the 4th auxiliary normally opened contact K4 is closed; The time relay picks up counting and the 3rd tutorial light LED3 lights, and is used to show that the time relay picks up counting.
After pump motor M begins to draw water; Level sensor is dried up, and the second end Y of level sensor, the 3rd end Z all are not communicated with the first end X, and the threshold values input end TH of time-base integrated circuit U1, triggering input end TR obtain the voltage of 0V; The output terminal OUT output high level of time-base integrated circuit U1 is given second end of relay K V; Because first end of this relay K V is a high level, this moment, relay K V broke off, and the first auxiliary normally opened contact K1 and second of relay K V assists normally opened contact K2 to break off.When the first auxiliary normally opened contact K1 of relay K V breaks off because the 3rd auxiliary normally opened contact K3 of contactor K is in the 3rd end and the 4th end conducting of the closed state and the time relay, still adhesive of contactor K, pump motor M still is in the state of drawing water; The first tutorial light LED1 extinguishes when the second auxiliary normally opened contact K2 of relay K V breaks off, and shows that level sensor is in dried up state.
After time relay timing was accomplished, the 3rd end of the time relay and the 4th end broke off, and this moment, the 3rd tutorial light LED3 extinguished, and contactor K disconnection, and pump motor M stops pumping, and accomplishes and draws water automatically.In addition, the 3rd of contactor K the auxiliary normally opened contact K3 and the 4th auxiliary normally opened contact K4 break off: second end of time relay is a low level when the 4th auxiliary normally opened contact K4 of contactor K breaks off.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.

Claims (9)

1. automatic water plug; Comprise ac power supply, water pump control switch and pump motor (M); Wherein said ac power supply is used for to pump motor (M) supply voltage being provided through this water pump control switch; It is characterized in that: also comprise first transformer (T1), second transformer (T2), bridge rectifier (D1, D2, D3 and D4), level sensor, trigger circuit and relay (KV); Wherein this water pump control switch comprises contactor (K), and this relay (KV) has the first auxiliary normally opened contact (K1);
Said ac power supply connects pump motor (M) through contactor (K) and connects the input end of this first transformer (T1); First output terminal of this first transformer (T1) is connected through the two ends of contactor (K) with the first auxiliary normally opened contact (K1) of relay (KV); And first output terminal of this first transformer (T1), second output terminal connect first input end, second input end of second transformer (T2) respectively, and the output terminal of this second transformer (T2) connects the input end of bridge rectifier (D1, D2, D3 and D4);
Said trigger circuit comprise time-base integrated circuit (U1), first resistance (R1), second resistance (R2), the 3rd resistance (R3) and the 4th resistance (R4); Wherein second end (Y) of level sensor passes through the 4th resistance (R4) and the 3rd resistance (R3) ground connection through this first resistance (R1), second resistance (R2) and the 3rd resistance (R3) ground connection and the 3rd end (Z) successively successively; This first resistance (R1) is connected the threshold values input end (TH) of this time-base integrated circuit (U1) with the connected node of second resistance (R2); Second resistance (R2) is connected the triggering input end (TR) of this time-base integrated circuit (U1) with the connected node of the 3rd resistance (R3); And the grounding end of this time-base integrated circuit (GND) ground connection, output terminal (OUT) connects second end of this relay (KV);
First output terminal of said bridge rectifier (D1, D2, D3 and D4) is connected first end of relay (KV), first end (X) of level sensor, the power end (Vcc) and the reset terminal (RES) of this time-base integrated circuit (U1), second output head grounding of this bridge rectifier (D1, D2, D3 and D4) respectively.
2. automatic water plug according to claim 1; It is characterized in that: contactor (K) has the 3rd auxiliary normally opened contact (K3) in this water pump control switch, and the 3rd auxiliary normally opened contact (K3) of this contactor (K) is parallelly connected with the first auxiliary normally opened contact (K1) of relay (KV).
3. automatic water plug according to claim 2; It is characterized in that: comprise that also contactor (K) also has the 4th auxiliary normally opened contact (K4) in the time relay and this water pump control switch, first end of the 4th auxiliary normally opened contact (K4) connects first output terminal of bridge rectifier (D1, D2, D3 and D4) and second end of the second end connect hours relay;
The 3rd end of this time relay connects second output terminal of first transformer (T1), and the 4th end of this time relay connects this contactor (K).
4. automatic water plug according to claim 1; It is characterized in that: this relay (KV) also has the second auxiliary normally opened contact (K2); First output terminal of this bridge rectifier (D1, D2, D3 and D4) is connected first end of first tutorial light (LED1) through this second auxiliary normally opened contact (K2), and second end of this first tutorial light (LED1) passes through the 5th resistance (R5) ground connection.
5. automatic water plug according to claim 1 is characterized in that: first output terminal of this bridge rectifier (D1, D2, D3 and D4) is successively through the 6th resistance (R6), second tutorial light (LED2) ground connection.
6. automatic water plug according to claim 3 is characterized in that: the 7th end of this time relay passes through the 8th end of the 3rd tutorial light (LED3), the 7th resistance (R7) connect hours relay successively.
7. according to any one described automatic water plug in the claim 1~3; It is characterized in that: this water pump control switch also comprises comprehensive protector of motor (JDB), stop button (S1) and starting button (S2); Wherein this comprehensive protector of motor (JDB) is connected pump motor (M) and contactor (K), and first output terminal of this first transformer (T1) passes through this comprehensive protector of motor (JDB) successively, contactor (K) is connected the back and is connected with the starting button (S2) of parallel connection, the first auxiliary normally opened contact (K1) of relay (KV), the 3rd auxiliary normally opened contact (K3) of contactor (K) with stop button (S1).
8. automatic water plug according to claim 1 is characterized in that: the negative pole of anodal and the 5th diode (D5) of output terminal (OUT) connection the 5th diode (D5) of this time-base integrated circuit (U1) connects first output terminal of bridge rectifier (D1, D2, D3 and D4).
9. automatic water plug according to claim 1 is characterized in that: first output terminal of this bridge rectifier (D1, D2, D3 and D4) is through second electric capacity (C2) ground connection.
CN2012200917089U 2012-03-13 2012-03-13 Automatic water pumping device Expired - Fee Related CN202531408U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200917089U CN202531408U (en) 2012-03-13 2012-03-13 Automatic water pumping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200917089U CN202531408U (en) 2012-03-13 2012-03-13 Automatic water pumping device

Publications (1)

Publication Number Publication Date
CN202531408U true CN202531408U (en) 2012-11-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012200917089U Expired - Fee Related CN202531408U (en) 2012-03-13 2012-03-13 Automatic water pumping device

Country Status (1)

Country Link
CN (1) CN202531408U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104879293A (en) * 2015-05-05 2015-09-02 湘潭大学 Full-automatic submersible pump applied to rice field and fishpond

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104879293A (en) * 2015-05-05 2015-09-02 湘潭大学 Full-automatic submersible pump applied to rice field and fishpond
CN104879293B (en) * 2015-05-05 2016-08-17 湘潭大学 A kind of full-automatic submersible pump being applied to rice field and fish pond

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
EE01 Entry into force of recordation of patent licensing contract

Assignee: Chongqing Juneng Construction Group Co., Ltd.

Assignor: Chongqing Qianniu Construction Engineering Co., Ltd.

Contract record no.: 2016500000013

Denomination of utility model: Automatic solar water pump

Granted publication date: 20121114

License type: Exclusive License

Record date: 20160608

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121114

Termination date: 20170313

CF01 Termination of patent right due to non-payment of annual fee