CN2280309Y - Testing and measuring automatic control device for protecting pump fom being lack of water - Google Patents

Abstract

The utility model discloses a testing and measuring automatic control device for protecting a pump from being lack of water, which comprises a power supply, a pump starting circuit, a water pump under water supply detection circuit, and a fault indication alarm circuit for water pump control protection under water supply time delay. The utility model has the advantages of simple structure, stable performance, complete function, low cost, etc. The utility model realizes the completely automatic control and protection of a water pump, and can match with various water automatic control devices for the water lever of a water pump sold at present.

Description

Water pump is owed water and is detected the protection self-actuated controller

The utility model belongs to controller, and particularly a kind of water pump is owed water and detected the protection self-actuated controller.The kind that has commercially available water pump self-actuated controller now is a lot, and every kind of circuit all has its certain features, has the design water pump to owe water detection, defencive function and water pump indicating fault that delay protection cuts off the power supply automatically but slide.

The purpose of this utility model is to provide a kind of simple in structure, stable performance, water pump multiple functional, that cost is low to owe water and detects the protection self-actuated controller.

Technical solution of the present utility model is such.This controller includes that power circuit, starting of pump station circuit, water pump are owed the water testing circuit, water pump is owed water time-delay control fault indication (warning) circuit.Water pump is owed water time-delay testing circuit and is connected and owe the water testing circuit and constitute in that an electrode is housed on the water pump water outlet pipeline opening.

The utility model has the advantages that circuit structure is simple, stable performance, multiple functional, cost is low etc.; be used with existing commercially available various water pump automatic controller for water level; realization is widely used in water system and the uses of family expenses 22OV water pump such as skyscraper, industrial and mining enterprises, school to the control and the protection automatically comprehensively of water pump.

Below in conjunction with drawings and Examples to the utility model further instruction.

Accompanying drawing is that structure of the present utility model is installed electrical schematic diagram.

As shown in drawings, the manual button TA of starting of pump station circuit with succeed electrical equipment J1 after QA is connected in series To negative pole, diode D1 J1 in parallel, normally opened contact J1-E button QA in parallel, water pump is owed The electrode E of upper water testing circuit connects capacitor C 1 after connecting R1, after connect negative pole, electrode E installs Pond water pipe water outlet, triode V2 base stage connects biasing resistor R1, and the colelctor electrode of V2 connects Connect positive source after succeeding electrical equipment J2, D2 reverse parallel connection J2, luminous tube LED1 connects with R3 Rear J2 in parallel, water pump is owed the water management indicating fault, the charging capacitor C2 positive pole one of warning circuit The road connects and connects behind the normally-closed contact J1-D ' behind the R4 to positive source, and contact J1 is often opened on another road Meet diode D3 behind the-D, potentiometer W1 and R6 are to the b utmost point of V3, and the c utmost point of V3 connects Connect positive source after the relay J 3, D3 is connected in J3, relay J 2 contact J2-1 one The termination power positive pole, another termination W1 is connected in series the tie point of mid point with R6, and J3-A ' is normally closed Contact water pump malfunction indicator lamp LED2 connects zero-power line behind the alarm Y parallel connection LED 2, One group of contact of change-over switch K1 serial connection relay normally open contact J1-A, J3-A is to power supply B Phase, the intermediate contact of K1 meet ac contactor coil CJ by motor protecter normally-closed contact RJ Connect power supply A phase behind the fuse RD, the moving push button start circuit of another contact catcher.

Operation principle of the present utility model: after the starting of pump station running, whether fetch water to the pond, then by peace The electrode E that is contained on the water inlet pipe of pond detects. Whether water on the LED indication water pump. Install additional such as figure Manual button TA to finish the starting of pump station circuit and arrange in order to illustrate. Behind plugged, electricity In the road K1 is placed automatic position, press the QA key, the J1 adhesive (also can be controlled by water level automatically Relay J 1 a processed wherein normally opened contact replaces) simultaneously also adhesive of J3, because of at ordinary times V3 cut-off J The normally-closed contact of 1-D charges to C2 through R4, and when the J1 adhesive, namely J1-D's is normally closed The contact disconnects, and passes through D3, W1, R6 by the C2 discharge after normally opened contact J1-D ' is closed Make V3 obtain the positively biased voltage turn-on, make the J3 adhesive, A.C. contactor is through J1-A, J3-A, RJ consist of the loop and get electric pump operation, and beginning is fetched water to the pond, and the current of effluent pipe mouth are through electricity Flow into the pond behind the utmost point E, because of the anodal connection metal water pipe shell of power supply and ground connection, detecting electrode The positive bias-voltage of E V2 after the water contact obtains and conducting J2 adhesive, LED1 by R1 The indication water pump on water. If in the process of normally fetching water, water pump is owed suddenly water, such as water pump to holding The water pipe head midway of the feed pipe of this section of pond gets loose or pipe burst etc. causes and owes water, and upper water detects Circuit operation, i.e. V2 cut-off, the J2 dead electricity, at this moment the positive bias-voltage of V3 is kept by the C2 discharge, V3 lost bias-off after discharge was finished and finished, and J3 discharges, and disconnected control loop voltage, and water pump stops End, and indicate water pump fault, warning. When the K1 switch places manual position, owe the water delay cut-off Holding circuit will withdraw from. Over current of motor, open-phase protection are then served as by motor protecter.

Most preferred embodiment of the present utility model is such, and as shown in drawings, LED 1, LED2, LED3, button TA, QA, switch K are installed on the controller box dignity plate, and connecting circuit.Other element is installed and is welded on the circuit board, and is fixed in the box body.The R1 lead-in wire connects effluent pipe mouth electrode E, positive source and water pump metal feed pipe ground connection.The utility model is used with existing commercially available various water pump automatic controller for water level, realizes control and the protection automatically comprehensively to water pump.

Claims (1)

1. A kind of water pump is owed water and is detected the protection self-actuated controller; include power circuit; the starting of pump station circuit; water pump is owed the water testing circuit; water pump is owed water time-delay control protection and water pump indicating fault warning circuit; the manual button TA that it is characterized in that the starting of pump station circuit with succeed electrical equipment J1 to negative pole after QA is connected in series; diode D1 J1 in parallel; normally opened contact J1-E button QA in parallel; after connecting R1, the electrode E that water pump is owed the water testing circuit connects capacitor C 1; after connect negative pole; electrode E installs water pipe water delivering orifice place, pond; triode V2 base stage connects biasing resistor R1; connect positive source behind the collector connection relay J2 of V2; D2 reverse parallel connection J2; J2 in parallel after luminotron LED1 connects with R3; water pump is owed the water management indicating fault; the charging capacitor C2 of warning circuit anodal one tunnel connects and connects behind the normally closed contact J1-D ' behind the R4 to positive source; another road meets diode D3 after often opening contact J1-D; potentiometer W1 and R6 are to the b utmost point of V3; the c utmost point of V3 connects positive source after connecting relay J 3; D3 is connected in J3; relay J 2 contact J2-1 one termination power positive pole; another termination W1 is connected in series the tie point of mid point with R6; J3-A ' normally closed contact water pump malfunction indicator lamp LED2; connect zero-power line behind the alarm Y parallel connection LED 2; one group of contact of switch K1 serial connection relay normally open contact J1-A; J3-A is to power supply B phase; the intermediate contact of K1 meets ac contactor coil CJ after connect power supply A phase behind the motor protecter normally closed contact RJ fuse RD, the moving push button start circuit of another contact catcher.