CN2699256Y

CN2699256Y - Water level induction apparatus for pure water

Info

Publication number: CN2699256Y
Application number: CN 200420040862
Authority: CN
Inventors: 倪端; 陈景德
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-27
Filing date: 2004-05-27
Publication date: 2005-05-11
Anticipated expiration: 2014-05-27

Abstract

The utility model relates to a water level induction apparatus for pure water, comprising a batch box, a high liquid level electrode, a low liquid level electrode, a public electrode, and an operating circuit of water level induction apparatus which comprises an amplification circuit, a logical judgment circuit, and a signal output circuit. The power line, connected with a R4 and a R3 in series, of the polar amplification circuit in the water level induction circuit is connected with the public electrode in parallel. The high liquid level electrode is connected with R2, and the low liquid level electrode is connected with R1. The polar amplification circuit is connected with the BG1 triode and the BG2 triode of the logical judgment circuit in parallel. The logical judgment circuit is connected with the signal output circuit in parallel. The water level high-low signal is transmitted to a polar operational amplification circuit by three electrodes. The electrical signal of the polar amplification circuit is transmitted to the logical judgment circuit. The high or the low liquid level signal, judged by the logical judgment circuit, is transmitted to the signal output circuit. The signal output circuit at an open or a closed relay contact form is transmitted to other power supply control circuits.

Description

Pure water water level inductance gauge

One, technical field

The utility model relates to used pure water water level inductance gauge on a kind of pure water factory water tank.

Two, background technology

At present, in the water level inductor of using in the society, have mechanically as float switch, electronic switch is arranged, electronic inductor is arranged, its float switch principle is simple, precision is low, is fit to large-scale liquid container; The electronic inductor majority utilizes the electric conductivity of water to select suitable comparator circuit based on mimic channel, and for pure water, pure electrical conductivity of water is below 10 μ S, and corresponding electric conductivity is poor, utilizes existing electronic inductor just incompatible.

Three, summary of the invention

The purpose of this utility model provides a kind of pure water water level inductance gauge, solves that the prior art precision is low, error big, incompatibility pure water water level detecting or expensive problem.

The technical solution of the utility model realizes in the following manner:

The utility model is by batch box, high level electrode, low level electrode, public electrode and by amplifying circuit, logic judging circuit, the operating circuit of the water level inductance gauge that signal output apparatus is formed is formed, the R4 that is in series with that it is characterized in that the two poles of the earth amplifying circuit in public pole and the water level sensor circuit, the power lead of R3 is in parallel, high level electrode and R2 link, low level electrode and R1 link, the triode BG1 of the two poles of the earth amplifying circuit and logic judging circuit, BG2 is in parallel, logic judging circuit and signal output apparatus are in parallel, three electrodes are transferred to the two poles of the earth operational amplification circuit with the water level high-low signal, the two poles of the earth amplifying circuit electric signal is transferred to logic judging circuit, the high or low liquid level signal of the judgement of logic judging circuit is transferred to signal output apparatus, signal output apparatus with relay contact open or the form of closing is passed to other power-supplying circuit.

Compared with the prior art the utility model has the following advantages:

1, can adapt to the pure water Level Detection, simple in structure, detect accurately.

2,, adopt the two poles of the earth to amplify signal transmitting accuracy height at pure water conductance 10 μ S low electric conductivities.

3, low cost of manufacture, the pure water factory of Yi Beixiao or dealer adopt, the using value height.

Four, description of drawings

Fig. 1-circuit theory diagrams of the present utility model and structural representation

The low level electrode D-public electrode of the high level electrode C-of A-pure water container B-among the figure

Rl～R19-resistance BG1～BG4-triode C1, C2-electric capacity F1～F7-operational amplifier J1, J2,2J, 3J-auxiliary reclay

Five, embodiment

For further disclosing the technical solution of the utility model, be further described by embodiment below in conjunction with Figure of description:

The utility model is by high level electrode, low level electrode, public electrode and by batch box A, high level electrode B, low level electrode C, public electrode D and by amplifying circuit, logic judging circuit, the operating circuit of the water level inductance gauge that signal output apparatus is formed is formed, it is characterized in that in public electrode D and the water level sensor circuit the two poles of the earth amplifying circuit be in series with R4, the power lead of R3 is in parallel, high level electrode B and R2 link, low level electrode and R1 link, the BG1 of the two poles of the earth amplifying circuit and logic judging circuit, BG2 is in parallel, logic judging circuit and signal output apparatus are in parallel, three electrodes are transferred to the two poles of the earth amplifying circuit with water level signal, amplifying signal is transferred to logic judging circuit, high liquid level or the low liquid level signal judged are transferred to signal output apparatus, signal output apparatus is passed to other power-supplying circuit with the form of opening or closing of relay contact, and its course of work is as follows:

As shown in Figure 1, R3, R4 are connected between power supply, stabilivolt and R3 parallel connection form 6.2 volts of comparative voltages, give F1, F2, F3, F4, under the anhydrous condition, resistance infinity between electrode " power supply ", " high water stage ", " low-water level ", R1, R2 dividing potential drop are lower than comparative voltage, and F3, F4 export noble potential, relay J 2 actions, simultaneously, F1 exports noble potential, and F2 exports electronegative potential, relay J 1 is failure to actuate, the BG3 conducting, relay 3J action, water level switch is exported anhydrous signal, relay 2J self-locking drives other circuit workings; When water inlet reaches low-water level, F3, F4 upset, BG3,2 ends, relay J 2 resets, but since the self-locking of relay 2J, still conducting of BG 3, and relay 3J still is in electricity condition, attain to a high place up to water level and to put, F1, F2 upset makes the BG1 conducting, and 2J removes self-locking, 3J resets, and sends the full water signal; When decline of water table during to low-water level point circuit repeat said process again.

Claims

1, a kind of pure water water level inductance gauge is by batch box, high level electrode, low level electrode, public electrode and by amplifying circuit, logic judging circuit, the operating circuit of the water level inductance gauge that signal output apparatus is formed is formed, the R4 that is in series with that it is characterized in that the two poles of the earth amplifying circuit in public pole and the water level sensor circuit, the power lead of R3 is in parallel, high level electrode and R2 link, low level electrode and R1 link, the triode BG1 of the two poles of the earth amplifying circuit and logic judging circuit, BG2 is in parallel, logic judging circuit and signal output apparatus are in parallel, three electrodes are transferred to the two poles of the earth operational amplification circuit with the water level high-low signal, the two poles of the earth amplifying circuit electric signal is transferred to logic judging circuit, the high or low liquid level signal of the judgement of logic judging circuit is transferred to signal output apparatus, signal output apparatus with relay contact open or the form of closing is passed to other power-supplying circuit.