CN86200031U

CN86200031U - Automatic water-cutting out unit

Info

Publication number: CN86200031U
Application number: CN 86200031
Authority: CN
Inventors: 李逢叠
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-01-02
Filing date: 1986-01-02
Publication date: 1986-08-20

Abstract

The utility model discloses an automatic water-cutting out unit, which belongs to an automatic controller for liquid level and automatically cuts out a water tap when the water level reaches a scheduled position. The automatic water-cutting out unit is characterized in that the installation and use are convenient and flexible; the static current consumption is lower than 1 milliampere; the automatic water-cutting out unit can work for three mouths more or less using four sections of NO. 5 batteries. The automatic water-cutting out unit is an automatic controller for liquid level suitable for water pools, water cylinders, etc., and is especially suitable for being used by users in regions with insufficient water supply.

Description

Automatic water-cutting out unit

This device is to belong to fluid level control device.Be a kind of when water level arrives the precalculated position, close the automatic water turn-off device of water tap automatically.Be applicable to the water intake of pond, washing machine etc., when water level arrives the precalculated position, close the water source automatically, anti-sealing spill-over goes out.

Mostly existing automatic water turn-off device is to adopt the form (as flush toilet) of ball float, utilizes the buoyancy of ball float, when water level arrives preposition, water pipe is clogged." water tap is with stopping device for informing " literary composition (the clear J57-9382 of Japanese Patent Application, classification number F16K-37) also is the buoyancy that utilizes buoyancy tank, when water level arrives preposition, makes valve closing, cuts off the water supply.These devices are because all very inconvenience is installed and used in the existence of ball float and other mechanical transmission facility in the water vat of basin and washing machine.At present, must does the insufficient water in a lot of cities impel many families be with pond water storage, and when water is arranged? when is water expired (comprising some washing machines)? it is the problem that a lot of people extremely are concerned about.For this reason, must design the automatic water-closing device that a kind of user can install and use voluntarily, to solve their trouble and worry.Simultaneously, when normal water supply, available manual faucet opens and closes the water source.

The utility model is exactly for this purpose and the automatic water-closing device of design.Adopt electronic automatic control device.Therefore, must design a sensitivity, reliably, the level sensor that do not take up space, the automatic control circuit of a low consumption, the low-power consumption electromagnetic valve that energy is worked under low voltage.

Below, in conjunction with the accompanying drawings, this device is elaborated.

Accompanying drawing 1 is the sensor of this device, by field effect transistor (1), and resistance (2), resistance (3), contact (4) is formed.When contact (4) when contacting with the water surface, sensor is exported a signal.

Accompanying drawing 2 is structural representations of solenoid valve.By coil (5), cover (6) in the magnetic conduction, yoke (7), permanent magnet (8), moving core (pilot valve valve plug) (9), water proof cover (10), main valve valve plug (diaphragm) (11), main valve valve seat (valve body) (12), coil carrier compositions such as (13).Belong to a kind of nothing

Material letter type pilot valve operating type solenoid valve.

Existing solenoid valve of the same type (see in May, 1984 version " solenoid valve in the 47th piece of the electromechanical engineering handbook), when applying certain voltage to coil, moving core (9) is attracted upwards because of electromagnetic force, and pilot valve is opened, and opens main valve then.When the voltage that is applied disappearance in a single day, then moving core descends because of gravity, clogs pilot valve seat (on main valve valve plug (11)), and main valve is closed.

The solenoid valve that this device is designed, the permanent magnet (8) that has increased as fixed iron core reaches and interior overlap (6) of the magnetic conduction of permanent magnet (8) close proximity.Like this, when coil (5) when adding positive pulse, suppose that the magnetic field of its generation is consistent with the magnetic direction of permanent magnet (8), then moving core (9) is made progress by magnetic attraction, causes the main valve valve open.After pulse disappears,, remain on the upper end, make main valve be held open state because the attraction force of cover in permanent magnet and the magnetic conduction is still held moving core.The magnetic field that coil produced when adding negative impulse is opposite with permanent magnetic field, and moving core causes main valve to be closed owing to electromagnetic repulsion force falls.After pulse disappears, owing to the deadweight of moving core makes main valve continue to close.So solenoid valve will be opened or closed condition and be because of the difference of the pulse polarity that applied on the coil, pulse still keeps original state after disappearing.So be referred to as " impulse electromagnetic valve ".The effect of cover (6) not only makes solenoid valve work under pulse condition in permanent magnet (8) and the magnetic conduction, and because the magnetic force that presets greatly reduces the needed electromagnetic force of moving core, so, can under very low VDC, work.In this device, use 6 volts of batteries, when reducing to 4.5 volts, voltage still can move reliably.Simultaneously, power consumption is little, during action, and this device power consumption＜3 watt.So impulse electromagnetic valve is a kind of switch valve that is applicable in the automatic control process as gas or liquid.

Accompanying drawing 3 is electrical schematic diagrams of this device.Be by sensor (14), monostable circuit (15), electronic switching circuit (16), solenoid valve (17), the electronic automatic control device that power supply (18) is formed.When the contact (4) (lead) of water level and sensor (14) when contacting, sensor output signal drives monostable circuit (15) work, thereby unlocking electronic switching circuit (16) makes the solenoid valve action.

Accompanying drawing 4 is embodiments of the present utility model.Tap water is from water pipe (19), through the water tap of opening in advance (20), solenoid valve (17) flows into the water vat of pond or washing machine, when water level (22) arrives the precalculated position, touch the contact (4) of sensor, control circuit (21) (as Fig. 3) is exported a pulse immediately, and solenoid valve (17) cuts out, thereby cut off the water supply, prevent to overflow.

This device have only the wire of a conduction be placed in pond or water vat desire to put on the water level, solenoid valve and water pipe adopt the coin pipe of sealing to be connected.So it is extremely convenient to install and use.Simultaneously, when not needing water level to control automatically, can close this device, and by water tap (20) manual opening-closing.Use very flexible.And because＜1 milliampere of control Dian Lu Static power consumption stream, wasted work not during solenoid valve Zai Static attitude only in the impulse duration work done, so use four joint No.5 cells, can be worked about three months, very economize on electricity, and safety, reliably.

Claims

1, one by sensor [14], monostable circuit [15], and electronic switching circuit [16], solenoid valve [17], the automatic water-closing device that DC electrical source [18] is formed is characterized in that sensor [14] is a level sensor, solenoid valve [17] is an impulse electromagnetic valve.

2, by the fixed automatic water-closing device of claim 1 Regulations, it is characterized in that sensor (14) is by field effect transistor (1), resistance (2), resistance (3), contact (4) is formed.

3, by claim 1 and the fixed automatic water-closing device of 2 Regulations, it is characterized in that contact (4) only is a lead.

4,, it is characterized in that the fixed iron core of solenoid valve (17) is made up of cover (6) in permanent magnet (8) and the magnetic conduction by the fixed automatic water-closing device of claim 1 Regulations.

5,, it is characterized in that (6) close proximity is overlapped respectively with in yoke (7) and the magnetic conduction in the two poles of the earth of permanent magnet (8) by claim 1 and the fixed automatic water-closing device of 4 Regulations.