CN2174726Y

CN2174726Y - Electronic automatic controlling device for water level

Info

Publication number: CN2174726Y
Application number: CN 93224118
Authority: CN
Inventors: 潘仁欢
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-13
Filing date: 1993-09-13
Publication date: 1994-08-17
Anticipated expiration: 2003-09-13

Abstract

The utility model relates to a novel electronic automatic water level controlling device, which is composed of main parts, such as an electronic controller, a solenoid valve, an upper water level limit electrode, a lower water level limit electrode, a detecting base electrode, etc. An electric signal is formed by limit electrodes contacting with and disengaging from a water surface according to the height of the water level, and is transduced to the electronic controller to control the opening and closing of the solenoid valve to achieve the aim of automatic control of the water level. The utility model has the advantages of high sensitivity, high stability, simple structure, reasonable structure, safety, reliability, and power consumption saving. The utility model provides the convenience to solve the problem of using water for urban inhabitants.

Description

Electronic automatic controlling device for water level

The utility model belongs to the control instrument technical field, is a kind of water level electronic automatic control device, especially for the water level automatic control device of city dweller family water vat, storage cistern.

The control of traditional water level generally is to adopt ball float, along with the lifting of water level is handled the startup of pump motor and closed, thereby reaches the automatic control purpose of water level in water pool, and this method is inapplicable for the storage cistern of huge numbers of families' dry pump.

A kind of automatic control penstock switch that China patent 92236527.X provides utilizes traditional ball float lifting principle, directly drives the opening and closing that water stopping valve is controlled water-supply-pipe by the bending lever.This method for controlling water level still can be used at rural area gravity flow low service, but urban water supply tends to occur high water pressure conditions, and when pressure of supply water in the water-supply-pipe during greater than ball float buoyancy, valve just can't be closed, need manual operation this moment, and that also just can not reach the automatic control purpose.

The purpose of this utility model is in order to overcome the deficiency of above-mentioned background technology, provide a kind of volume little, highly sensitive, adopt the water level electronic automatic control device of little current circuit, storage cistern water supply robotization with the realization city dweller is that valve is when need supply water, can open automatically and discharge water, can close automatically again after the water supply.

The utility model is achieved in that the keying of being carried out water supply valve by solenoid valve; Solenoid valve is by electronic controller controls, water-level probe is the outer electrode of electronic controller, it is made up of detection base stage, upper limit level electrode lower limit level electrode, by contacting or disengaging of electrode and water level, sense electronic control circuit, whether the adhesive of pilot relay, by the keying of relay electromagnetic valve of instruction door.

In electronic controller, form amplifying circuit through current-limiting resistance R to the base stage of triode BG1 by surveying base stage St1; Form on-off circuit by triode GB1 amplifying signal through triode BG2 and relay.Main components and parts connect as follows: water-level detecting base stage St1 is connected in series the base stage of current-limiting resistance R to triode BG1, the grounded emitter of BG1, and the current collection level links to each other with the base stage of triode BG2, and the collector of BG2 connects positive pole, and emitter serial connection relay J is to ground; Normally opened contact J-2 one end of relay connects positive level, and the other end is connected in series solenoid valve DF to ground by hydraulic pressure switch K2; Luminotron D1 is through current-limiting resistance R1, solenoid valve DF in parallel; The normally closed contact J-3 of luminotron D2 serial connection relay J is to anodal, and other end serial connection current-limiting resistance R2 is to ground; Upper limit level electrode St2 connects positive pole, and lower limit level electrode St3 succeeds the normally closed contact J-4 of electrical equipment J.

The utility model has the advantages that: can control water level in water pool like clockwork, highly sensitive, good stability; The loop current of electronic controller is the X microampere only, electrolysis, not polluted water can not take place.And volume is little, and is simple in structure, the power consumptive province.

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is the profile synoptic diagram of water level electronic automatic control device.

Fig. 2 is the wiring diagram of electronic controller.

As shown in Figure 1, the water level electronic automatic control device comprises that attaching plug (1), electronic controller (2), solenoid valve (3), water inlet pipe (4), water delivering orifice (5), storage cistern (6), St1 survey base stage (7), lower limit level electrode St3(8), upper limit level electrode St2(9), electronic controller is provided with hand switch (10), red, green pilot lamp (11), louvre (12) is formed.

As shown in Figure 2: BG1, BG2, triode; J relay, J-2 are the normally opened contacts of J, and J-3 is the normally closed contact of J.D: rectification circuit; R, R1, R2: resistance; B: transformer; DF: solenoid valve; D1, D2 light emitting diode; K1: hand switch; K2: normally closed hydraulic pressure switch; St1: survey base stage; St2: upper limit level electrode; St3 lower limit level electrode.

Connect with the mains, when the contact of the water surface in the storage cistern (6) upper limit level electrode St2, connect with detection base stage St1 by water, constitute loop through current-limiting resistance R to the base stage of triode BG1 by St1, the collector potential of BG1 conducting BG1 is descended, because the collector of BG1 links to each other with the base stage of triode BG2, so the base potential of BG2 also descends, not conducting of BG2, electromagnetic valve is not worked, and promptly stops to discharge water; When water level is shallow when leaving upper limit level electrode St2, and survey utmost point St3 also in water, because St3 is connected on the normally closed contact J-4, still can constitute the loop with the St1 utmost point; When water is shallow again when leaving St3, the loop cuts off, not conducting of BG1, and the collector of BG1 and the base potential of BG2 rise, the BG2 conducting, because relay J is serially connected on the emitter of BG2, relay J is by adhesive, the closed energising of relay J-2 simultaneously makes the solenoid valve action, and valve opening discharges water; When water completely arrived the St3 contact again, the relay J that is connected in series with St3-4 normally closed contact was opened, so St3 does not constitute the loop, electromagnetic valve is carried out and continued to discharge water, and completely arrived with St2 until water to contact.So repeat continuous circulation, water level always remains between St2 and the St3 present position.

Hydraulic pressure switch K2 one termination J often opens J-2, and another termination solenoid valve DF cuts off no-load running automatically when cutting off the water.

Use powered battery: dwindle the innovative product that wiring board and electromagnetic valve are made of one with same, resemble soap box size, peripheral no electric wire.Hydraulic pressure switch K2 on the solenoid valve cuts off no-load running automatically when cutting off the water.

Claims

1, a kind of water level electronic automatic control device, by electronic controller, composition such as extraction electrode and solenoid valve, it is characterized in that, in the electronic controller circuit, by visiting then base stage St1, serial connection current-limiting resistance R is to the base stage of triode BG1, the grounded emitter of BG1, collector links to each other with triode BG2 base stage, and the collector of BG2 connects positive pole, emitter serial connection relay J is to ground, normally opened contact J-2 one end of relay connects anodal, and to ground, luminotron D1 is through current-limiting resistance R1 solenoid valve DF in parallel by hydraulic pressure switch K2 serial connection solenoid valve DF for the other end; The normally closed contact J-3 of luminotron D2 serial connection relay J is to anodal, and other end serial connection current-limiting resistance R2 is to ground; Upper limit level electrode St2 connects positive pole, and lower limit level electrode St3 succeeds the normally closed contact J-4 of electrical equipment J,

Use powered battery, the innovative product with above same wiring board and solenoid valve are made of one resembles soap box size, and peripheral no electric wire has been taps K2 on the solenoid valve, cuts off no-load running when cutting off the water automatically.