CN2366834Y - AC pulsation type device for displaying and controlling liquid level - Google Patents

Abstract

The utility model belongs to the liquid level display controller, which is composed of a casing, a base, a low liquid level display lamp, a medium liquid level display lamp, a high liquid level display lamp, an output display lamp, a wiring terminal, a wiring fastening screw hole, a circuit board, etc. A top plate of the casing is provided with the low liquid level display lamp, the medium liquid level display lamp, the high liquid level display lamp and the output display lamp; a base of the casing is provided with the wiring terminal and the wiring fastening screw hole; a front base of a back plate of the casing is provided with the circuit board which is provided with a circuit construction. The utility model has the characteristics that the phenomenon that the electrode is contaminated and failure is avoided, the corrosion, rusting, dropping off and failure of the circuit board and the contact failure of relay contacts, etc. are avoided.

Description

Alternating-current pulse formula liquid level display controller

The utility model belongs to the liquid level display controller.

At present the fluid level controller that uses of user general use about 20 days will cleaning electrode, change half a year, otherwise the very fast contaminated dirt of being stained with of electrode lost efficacy, and caused the waste of human and material resources, resource, and was confined to use in non-corrosive liquid.Its reason one be with direct current as the detectable signal source, place liquid to pass to galvanic electrode for a long time and easily be stained with dirt by comprehensive effects such as metallides, interelectrode resistance value constantly increased and lost efficacy; The 2nd, electrode be metal easily get rusty come off malfunctioning due to.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art and adopt the pulse ac electricity as the detectable signal source, adopt nonmetal carbon rod as exploring electrode, and the alternating-current pulse formula liquid level display controller of liquid level demonstration and soft start output unit is set.

The purpose of this utility model can realize by following measures: the case top at controller is provided with basic, normal, high three liquid levels demonstration lamp hole and an output demonstration lamp hole, the soft start element is set, connection terminal is set and connector lug tightens up screw at the housing base, behind housing, on the base circuit board is set before the plate in a side of housing base; Second tube sheet, electric capacity, resistance, power transformer, relay, triode are set on the circuit board, reach line construction.

The line construction of controller is as follows:

The connection terminal 8 of controller inserts 220V alternating current zero line N, connection terminal 9 phase-connecting wire L, power supply transformer B primary coil L1 two ends.Power transformer B diminishing coil L2 two ends low-voltage AC one end m links to each other with resistance R 5 one ends, R3 one end, capacitor C 3 one ends, and capacitor C 3 other ends link to each other with connection terminal 1, public electrode a, constitutes the alternating current pulse signal circuit.The R5 other end links to each other with R1 one end, triode Q2 collector through commutation diode D7, power supply Q2, and the Q2 emitter meets L2 other end n, and the Q2 base stage links to each other with connection terminal 3, electrode c, and electrode C not links to each other with electrode a by liquid, constitutes signal absorption and amplifies network; The R3 other end a road through the luminotron LED2 power supply Q3 that links to each other with triode Q3 collector, the Q3 emitter meets low-voltage AC concentric line n, Q3 base stage, diode D6 negative terminal, electrode d, links to each other with electrode a by liquid, constitutes to hang down the liquid level display network; The R3 other end two the tunnel through the LED3 power supply Q4 that links to each other with the Q4 collector, the Q4 expelling plate meets low-voltage AC concentric line n, Q4 base stage, electrode e, links to each other with electrode a by liquid, constitutes centre liquid level display network; The R3 other end three the tunnel through LED4 link to each other with the Q5 collector power supply Q5, the Q5 emitter meets low-voltage AC concentric line n, Q5 base stage, electrode e link to each other with electrode a by liquid, constitute high liquid level display network.Power transformer B diminishing coil L2 two ends low-voltage AC joins through bridge rectifier and filter capacitor C1, the rectifier positive voltage terminal links to each other with triode Q1 emitter, power supply Q1, by Q1 collector plate supply relay J1, J2, luminotron LED1, Q1 collector and relay J 1 line Bao Yiduan, relay J 2 line Bao Yiduan, diode D5 negative terminal, capacitor C 2 anodes, resistance R 2 one ends link to each other, the R2 other end links to each other with luminotron LED1 anode, the relay J 1 line bag other end, the relay J 2 line bag other ends, diode D5 anode, the C2 negative terminal, the LED1 negative terminal connects the direct supply concentric line, on the formation, bottom limit level control and output control and output display network.The control of upper and lower limit liquid level is implemented by relay J 1, and liquid feeding or discharge opeing are realized by relay J 2.Connection terminal 6 external 220V alternating current phase lines are succeeded electrical equipment J2 contact (2) through soft start element Rt, and the normally closed point of J2 (1) links to each other with connection terminal 5, and J2 normally opened contact (3) links to each other with connection terminal 7, constitute the soft start output network.

The utility model has following advantage compared to existing technology: the one, there is not direct current by liquid and electroplax, and contaminated malfunctioning phenomenon the metallide effect can not appear and in electrode; The 2nd, can in being the different condition liquid of 0～1 megaohm, use resistance, place the inefficacy that comes off of getting rusty that can not be corroded of the electrode of deep-etching liquid for a long time, do not need often to clean and change electrode yet; The 3rd, can eliminate control output instantaneous large-current effectively the impact of controlled electrical equipment (liquid pump motor) is burnt, can prevent that common relay contact sparking from ablating and the loose contact phenomenon that causes; The 4th, high, medium and low liquid level shows and the output intuitive display.

The accompanying drawing drawing is described as follows:

Fig. 1 is the utility model outside drawing.

Fig. 2 is that the utility model is opened shell structure figure.

Fig. 3 is the utility model line assumption diagram.

The utility model is described in further detail below in conjunction with accompanying drawing (implementation column):

With reference to accompanying drawing 1-2, the utility model is by housing 1, low liquid level display lamp 2, middle liquid level display lamp 3, high liquid level display lamp 4, output display lamp 5, nine wiring tighten up screw 6, nine connection terminals 7, circuit board 8, diode 9, electric capacity 10, electric capacity 11, relay 12, relay 13, triode 14, power transformer 15, resistance 16, base 17, soft start element 18 is formed, in the middle of base 17, establish the soft start element, establishing nine connection terminals 7 and corresponding nine connector lugs in base 17 1 sides tightens up hole 6 and belongs to conjoined structures, on housing 1 back plate base 17, circuit board 8 is set, power transformer 15 is set on the circuit board 8, relay (12,13), display lamp (2,3,4,5), diode 9, electric capacity (10,11), relay (12,13), three plate pipes 14, power transformer 15, resistance 16, and line construction.

With reference to accompanying drawing 3, line construction of the present utility model: the connection terminal 8 of controller inserts 220V alternating current zero line N, connection terminal 9 phase-connecting wire L, power supply transformer B primary coil L1 two ends.Power transformer B diminishing coil L2 two ends low-voltage AC one end m links to each other with resistance R 5 one ends, R3 one end, capacitor C 3 one ends, and capacitor C 3 other ends link to each other with connection terminal 1, public electroplax a, constitutes the alternating current pulse signal circuit.The R5 other end links to each other with R1 one end, triode Q2 collector through commutation diode D7, power supply Q2, the Q2 emitter meets L2 other end n (low-voltage AC concentric line), the Q2 substrate links to each other with connection terminal 3, electrode c, electrode C links to each other with electrode a (signal source) by liquid, constitutes signal absorption and amplifies network.The R3 other end a road through the luminotron LED2 power supply Q3 that links to each other with triode Q3 collector, the Q3 emitter meets low-voltage AC concentric line n, Q3 base stage, diode D6 negative terminal, electrode d, links to each other with electrode a by liquid, constitutes to hang down the liquid level display network.The R3 other end two the tunnel through the LED3 power supply Q4 that links to each other with the Q4 collector, the Q4 emitter meets low-voltage AC concentric line n, Q4 base stage, electrode e, links to each other with electrode a by liquid, constitutes centre liquid level display network.The R3 other end three the tunnel through LED4 link to each other with the Q5 collector power supply Q5, the Q5 emitter meets low-voltage AC concentric line n, Q5 base stage, electrode e link to each other with electrode a by liquid, constitute high liquid level display network.Power transformer B diminishing coil L2 two ends low-voltage AC joins through bridge rectifier and filter capacitor C1, the rectifier positive voltage terminal links to each other with three plate pipe Q1 emitters, power supply Q1, by Q1 collector supply relay J1, J2, luminotron LED1, Q1 collector and relay J 1 line Bao Yiduan, relay J 2 line Bao Yiduan, diode D5 negative terminal, capacitor C 2 anodes, resistance R 2 one ends link to each other, the R2 other end links to each other with luminotron LED1 anode, the relay J 1 line bag other end, the relay J 2 line bag other ends, diode D5 anode, the C2 negative terminal, the LED1 negative terminal connect the direct supply concentric line (), on the formation, bottom limit level control and output control and output display network.The control of upper and lower limit liquid level is implemented by relay J 1, and liquid feeding or discharge opeing are realized by relay J 2.Connection terminal 6 external 220V alternating current phase lines are succeeded electrical equipment J2 contact (2) through soft start element Rt, and the normally closed point of J2 (1) links to each other with connection terminal 5, and J2 normally opened contact (3) links to each other with connection terminal 7, constitute the soft start output network.From connection terminal 7 output 220V power supply power supply electric pump discharge opeings, electric pump controlled source line is promptly become liquid feeding by connection terminal 7 reconfigurations to connection terminal 5 control automatically.

The utility model adopts the alternating current ultimate principle: power transformer B diminishing coil L2 two ends low-voltage AC.One end m obtains one group of faint spike pulse signal through differential capacitance C3, signal resistance R4, and delivers to electrode a by connection terminal 1.The detectable signal of liquid level detection electrode b, c, d, e, f, a provides by liquid by public electrode, the common return passage when second tube sheet D6 is the alternating-current pulse signal voltage by the liquid negative half period.When AC signal voltage during at positive half cycle (direct impulse) electric current by the be knot → low-voltage AC concentric line n of public electrode a → liquid → exploring electrode (b, c, d, e, f) → absorption triode (Q2, Q3, Q4, Q5); Electric current forms the alternating current loop by n → diode D6 → electrode d → liquid → electrode a during negative half period (negative-going pulse), is faint pulse ac by electrode a～f therefore.Conducting when triode Q1～Q5 has the pulse signal input ends during the pulse-free signal input, all is operated on off state.Electrode adopts nonmetal carbon rod.

Claims (2)

1. alternating-current pulse formula liquid level display controller, it is characterized in that this controller is by housing (1), low liquid level display lamp (2), middle liquid level display lamp (3), high liquid level display lamp (4), output display lamp (5), tighten up screw 6), connection terminal (7), circuit board (8), diode (9), electric capacity (10,11), relay (12,13), triode (14), power transformer (15), resistance (16), base (17), soft start element (18) is formed, low liquid level display lamp (2) is set at housing (1) top, middle liquid level display lamp (3), high liquid level display lamp (4), the output display lamp, at housing base (17) connection terminal (7) is set, tighten up screw (6) and soft start element (18), before the plate of housing (1) back, on the base (17) circuit board (8) is set, diode (9) is set on circuit board (8), electric capacity (10,11), relay (12,13), triode (14), power transformer (15), resistance (16) and line construction.

2. pulsed liquid level display controller according to claim 1 is characterized in that the line construction of this controller is:

The connection terminal 8 of controller inserts 220V alternating current zero line N, connection terminal 9 phase-connecting wire L, power supply transformer B primary coil L1 two ends.Power transformer B diminishing coil L2 two ends low-voltage AC one end m links to each other with resistance R 5 one ends, R3 one end, capacitor C 3 one ends, and capacitor C 3 other ends link to each other with connection terminal 1, public electrode a, constitutes the alternating current pulse signal circuit.The R5 other end links to each other with R1 one end, triode Q2 collector through commutation diode D7, power supply Q2, and the Q2 emitter meets L2 other end n, and the Q2 base stage links to each other with connection terminal 3, electrode c, and electrode C links to each other with electrode a by liquid, constitutes signal absorption and amplifies network; The R3 other end a road through the luminotron LED2 power supply Q3 that links to each other with triode Q3 collector, the Q3 emitter meets low-voltage AC concentric line n, Q3 base stage, diode D6 negative terminal, electrode d, links to each other with electrode a by liquid, constitutes to hang down the liquid level display network; The R3 other end two the tunnel through the LED3 power supply Q4 that links to each other with the Q4 collector, the Q4 emitter meets low-voltage AC concentric line n, Q4 base stage, electrode e, links to each other with electrode a by liquid, constitutes centre liquid level display network; The R3 other end three the tunnel through LED4 link to each other with the Q5 collector power supply Q5, the Q5 emitter meets low-voltage AC concentric line n, Q5 base stage, electrode e link to each other with electrode a by liquid, constitute high liquid level display network.Power transformer B diminishing coil L2 two ends low-voltage AC joins through bridge rectifier and filter capacitor C1, the rectifier positive voltage terminal links to each other with triode Q1 emitter, power supply Q1, by Q1 collector supply relay J1, J2, luminotron LED1, Q1 collector and relay J 1 line Bao Yiduan, relay J 2 line Bao Yiduan, diode D5 negative terminal, capacitor C 2 anodes, resistance R 2 one ends link to each other, the R2 other end links to each other with luminotron LED1 anode, the relay J 1 line bag other end, the relay J 2 line bag other ends, diode D5 anode, the C2 negative terminal, the LED1 negative terminal connects the direct supply concentric line, on the formation, bottom limit level control and output control and output display network.The control of upper and lower limit liquid level is implemented by relay J 1, and liquid feeding or discharge opeing are realized by relay J 2.Connection terminal 6 external 220V alternating current phase lines are succeeded electrical equipment J2 contact (2) through soft start element Rt, and the normally closed point of J2 (1) links to each other with connection terminal 5, and J2 normally opened contact (3) links to each other with connection terminal 7, constitute the soft start output network.

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