CN2155036Y

CN2155036Y - Water level controller with automatic feeding water

Info

Publication number: CN2155036Y
Application number: CN 93202033
Authority: CN
Inventors: 王建设
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-13
Filing date: 1993-01-13
Publication date: 1994-02-02
Anticipated expiration: 2003-01-13

Abstract

The utility model relates to a water level controller with automatic feeding water, wherein, a transistor is used for controlling a circuit, a low-voltage alternating current is used as an electrode signal, and three electrodes are respectively arranged on an upper water level, a lower water level and a minimal water level; the upper and the lower water level electrodes are not conductive when the water storage tank is empty, and the controlled relay stops working when a transistor is turned off; the water storage tank is fed with water when a motor works; when the water storage tank is full, the electrodes are conducted, the transistor is turned on, and the relay is powered on; when a normally-closed contact which is connected in series with the motor is switched off, the motor stops working. The utility model has the advantages of simple circuit, high safety, and high sensitivity. The utility model is especially suitable for the automatic control of domestic water feeding pumps, and can be also used for a three-phase motor of large tower water feeding control when matched with an AC contactor.

Description

Water level controller with automatic feeding water

The utility model relates to a kind of device of controlling material storage in the capacity, particularly a kind of water level controller that is applicable to water on the control family reserve tank.

The automatic controller for water level that uses mainly is divided into machinery control and electric control two big classes at present, and the mechanical type automatic controller for water level mainly is ball float-magnetic guiding principle-dry-reed, and its mechanism is heavy, and easily causes tripping.Condenser type automatic controller for water level and controllable silicon formula automatic controller for water level have poor anti jamming capability and the more high shortcoming of cost respectively in the electric control automatic controller for water level, and the sensitivity of low-voltage direct electrode formula automatic controller for water level electrode in use can reduce gradually.

The purpose of this utility model be to provide a kind of highly sensitive, cost is low, antijamming capability is strong, safe in utilization and be specially adapted to control the automatic loading water water level controller of water on family's reserve tank.

The utility model adopts transistor control circuit for achieving the above object, and low-voltage AC is as electrode signal, place the electrode of reserve tank lowest water level to be connected the output terminal of low-voltage AC, place water level on the reserve tank and down two electrodes of water level be connected to the two ends of relay normally open contact, one end of normally opened contact is connected with transistor base by a potentiometer, relay coil one end is connected with the low-voltage AC output terminal by a diode, the other end is connected the collector of triode, motor with connect power supply after relay 1 normally closed point is connected in series, thereby make when reserve tank is anhydrous, two level electrode no currents pass through up and down, transistor base can not get bias current, be in cut-off state, relay is failure to actuate, machine operation, water on the reserve tank, when reserve tank waterborne when full, on, following water level two electrodes are connected by water, triode conducting, relay work, the normally closed point that is serially connected on the motor disconnects, motor quits work, and reduces to down water level when following when water level, and triode quits work because of can not get bias current, relay electric-loss, normally closed some adhesive of relay, motor is started working once more, makes water on the reserve tank.

In conjunction with the accompanying drawings the utility model is elaborated below by embodiment:

Accompanying drawing is the utility model electrical schematic diagram.

Motor D and relay J in the automatic loading water water level controller ₁Normally closed contact J _1-1Serial connection is after battery main switch K ₁Connect AC power, autocontrol switch K ₂For double-point double-throw switch is serially connected in master switch K ₁And between elementary 1,2 of transformer B, transformer secondary output is two low pressure windings, a winding water receiving position indicating circuit, and another winding is connected with water-level control circuit, water-level control circuit repeat circuit coil J ₁, J ₂And capacitor C ₁Back in parallel and diode D ₁Serial connection, B utmost point winding of a termination transformer 3 points, another termination triode BG collector places the electrode C of lowest water level to be connected through lead and transformer secondary output winding at 3, places down water level to reach the electrode B, the A that go up water level and is connected to relay J ₁Normally opened contact J _1-2Two ends, and the relay normally open contact end of the last level electrode A of connection is connected relay J through resistance R, potentiometer W with triode BG base stage ₂Normally opened contact J _2-1, normally closed contact J _2-2Respectively with pilot lamp L ₁And L ₂Serial connection.When using this automatic loading water water level controller, closed battery main switch K ₁And autocontrol switch K ₂, when reserve tank was anhydrous, A, B two electrodes did not have conducting, and no current passes through in the circuit, relay J ₁, J ₂Do not work, motor D is rotated and is gone up water, pilot lamp L ₂Indication, along with the rising of water level, by the c point to the b point, though two electrodes are by the water conducting, because relay J ₁The contact

Be normally opened contact, triode still can not get bias current, relay J ₁, J ₂Still do not work, motor D works on, water on the reserve tank, when water level was increased to a point, electrode A, B, C were by the water conducting, transistor base gets electric, relay coil J ₁, J ₂Work, relay J ₁Normally closed contact J _1-1Disconnect, motor D stops operating and draws water, relay J ₂Normally opened contact J _2-1Adhesive, pilot lamp L ₁Indication, J _2-1Disconnect pilot lamp L ₂Extinguish, when water level is reduced to the disengaging electrode A, because triode BG base stage still can obtain bias current, relay J from circuit ₁, J ₂Still be failure to actuate, when water level is reduced to when breaking away from electrode B, triode BG base stage dead electricity and end relay J ₁, J ₂Outage makes normally closed contact J _1-1, J _2-2Closure, machine operation begins to go up water, last water pilot lamp L ₂Indication so circulates, and has realized the purpose of automatic loading water.

The utility model cost is low, circuit is simple, owing to use low-voltage AC as electrode signal, so not only safe in utilization, and electrode is difficult for oxidation, makes sensitivity higher, be specially adapted to the automatic control of water on the piston type domestic water pump, if cooperates with A.C. contactor, can also be used for the control of water on the large-scale water tower of three phase electric machine, its practical value is higher.

Claims

1, a kind of automatic loading water water level controller adopts transistor control circuit, it is characterized in that adopting low-voltage AC is electrode signal, place the electrode C of water level of the end of reserve tank to be connected the low-voltage AC output terminal, place two electrode A, the B of the upper and lower water level of reserve tank to be connected to relay normally open contact J _1-2Two ends, normally opened contact J _1-2An end be connected relay coil J with triode BG base stage by potentiometer W ₁, J ₂One end is by diode D ₁Be connected with the low-voltage AC output terminal, the other end is connected the collector of triode BG, motor D and relay J ₁Normally closed some J _1-1Connect power supply after the serial connection, the water level indicating circuit is connected with transformer B secondary low-voltage winding, and, relay J ₂Normally closed contact J _2-2Normally opened contact J _2-1Respectively with pilot lamp L ₂, L ₁Serial connection.