CN85201964U

CN85201964U - Predetermined position of fluid level controlling system

Info

Publication number: CN85201964U
Application number: CN 85201964
Authority: CN
Inventors: 阚武
Original assignee: Individual
Current assignee: Individual
Priority date: 1985-06-03
Filing date: 1985-06-03
Publication date: 1986-08-13

Abstract

The utility model discloses a predetermined position of fluid level automatic control system. The predetermined position of fluid level automatic control system doesn't provided a power supply and consume power for controlling. The utility model is on the contactless type electromagnetic signal transformation principle and adopts a small floater to move within limits corresponding to a spring tube to manufacture and use, and the predetermined position of fluid level automatic control system has the advantages of simple repair, low cost and reliable operation.

Description

Predetermined position of fluid level controlling system

This patent is used for automatic starting and the automatic left alone without help machine control that liquid level is given allocation up and down.

Known automatic control of liquid system is divided into two kinds of mechanical type and electronic types.

Mechanical type is a ball float by pulley moving weight of generation, and in the collision, lower position switch has making complicated by dress, poor reliability, the defective that cost is high.

Electronic type is divided into two kinds of photo-electric or contacts, all the working power by supply control part part behind the step-down rectifier.Photo-electric is the anti-interference then necessary light modulated that adopts.Contact is to pass to marking current in the liquid, and signal contact wheel easily produces oxidation, electrolysis, corrosion and cause out of control.And equal cost height, inconvenient maintenance.

The task of this patent is: the volume, the cost that reduce whole automatic control system; Remove controls power supply and function.Directly control the operation of motor with the pick-up unit of liquid level up and down.

The method of solution task is: do relative motion by buoyancy aid (3) with the variation of liquid level with permanent magnet (4) and tongue tube (5,6), and reach the purpose that non-contact type is directly inhaled the disjunction control loop.

Utilize accompanying drawing to be further described:

Fig. 1 is the system wiring electrical schematic diagram

Fig. 2 Fig. 3 respectively is a routine enforcement figure

Fig. 4 is the enlarged drawing of (6) among Fig. 3.

Tongue tube (5) is fixed on the outer corresponding liquid level bound position of controlled liquid observation tube (2), and this is to consider that lead is not answered in the liquid to move.Permanent magnet (4) sealing is glued into to the float bottom of being made with glass or plastics or non-magnetic shielding material such as copper or aluminium.This is to consider that liquid to the physical chemistry reflection that permanent magnet took place, is the protection sheath that prevents to produce reflection and influence each other and add mutually, and makes a floating body (3) with this protective seam.Floating body is inserted (Fig. 2) allows it along the direction of arrow in the observation tube (2) of controlled liquid (1), float with the variation of liquid level.Or go up perforate down with what float packed that non-magnetic cup looses that material makes into, aperture is less than float, loam cake (1) detachably and with the tongue tube after the sealing is made in the little tube (9) of an integral body, length of its little tube is to make the magnetic field intensity of moving being changed of float along the direction of arrow, and the suction that is enough to reach tongue tube contains and discharges detection, the control device (Fig. 4) that is as the criterion.This device is fixed on the liquid level bound position in the container (8).Among Fig. 3 (6 ₁～6 ₃) be this device.The tongue tube of upper control limit position (5) (5 ₁, 6 ₁) pay other with normally closed contact and pay with normal opened contact.Be provided with further safeguard measure in the system: after dropping to the position that replenish when liquid level, owing to various faults do not reach additional, after continue descending, tongue tube (5 ₃, 6 ₃) start standby, newspaper well immediately or cut off the electrical circuit of other operational outfits that may have an accident simultaneously.

Claims

1, automatic control system that is used for liquid level upper and lower limit position; it is characterized in that the nothing control power supply that the float (3) be made up of little permanent magnet (4) and protective seam and tongue tube (5) are formed; do not have the control power consumption, do not have the detection control apparatus of machinery part and a complete automatic control system that constitutes therefrom.