CN2156532Y

CN2156532Y - Float force gravity hammer type liquid level controller

Info

Publication number: CN2156532Y
Application number: CN 93227569
Authority: CN
Inventors: 邱玉琢
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-16
Filing date: 1993-03-16
Publication date: 1994-02-16
Anticipated expiration: 2003-03-16

Abstract

The utility model discloses a liquid level controller, composed of a top and a bottom gravity hammers, a magnetic steel, a reed switch and a spring. The top and the bottom gravity hammers are submerged in the controlled liquid, and the reed switch is connected with the start-up loop of a liquid pump electric machine. When the liquid level changes, the top and the bottom gravity hammers respectively immerge in or reveal from the liquid level, and the liquid floatage causes the total gravity of the two gravity hammers to change, so the length of the spring and the position of the magnetic steel are changed. Next, the reed switch acts, and the liquid pump electric machine automatically starts or stops to keep the change of the liquid level within the required ranges.

Description

Float force gravity hammer type liquid level controller

The present invention relates to a kind of fluid level control device, in order to satisfy production requirement, need the liquid level of liquid pool to remain on variation in certain scope in the industrial and agricultural production, liquid level does not transfinite up and down.This controller action is in the starter gear of liquid pump motor, when liquid level change during to certain altitude, liquid pump motor started or stoped automatically, thereby keep liquid level to change between bound, keeps liquid pool not lack liquid, and liquid is not excessive.

Current fluid level control device is more, be broadly divided into following several: (1), electric pole type fluid level controller, it is that electric conductivity with liquid detects liquid level, metal electrode is come in and gone out in liquid during work, corrosion influences electric conductivity easily, reliability is relatively poor, and electrode needs with the noble metal manufacturing and installs inconvenient.(2) magnetic float reed switch formula fluid level controller, it is to act on the magnet steel that is fitted together with float to be installed in the reed switch that the lower end seals in the non magnetic pipe and to detect liquid level, magnet steel contacts with liquid, adsorb the magnetic impurity that floats on a liquid easily, make the float action insensitive, non magnetic pipe is dipped in the liquid, in pipe seepage and pipe during dewfall, will damage reed switch and insulate and make its damage or malfunctioning.(3) float lever formula fluid level controller, it is when reaching the highest and minimum liquid level with float, and the push-and-pull lever directly acts on contact and detects liquid level, and float needs along slideway and guide line lifting, and float and slideway volume are bigger, and consume material is more, installs inconvenient.Above-mentioned fluid level controller is owing to exist certain shortcoming, and the user does not extensively adopt as yet.The purpose of this invention is to provide a kind ofly cancel electrode, do not need float, volume is little, material saving, reliable operation, being convenient to install and control contact can be away from the novel liquid level controller of controlled liquid.

When having the weight immersion liquid of certain volume and gravity, this liquid counterweight hammer has certain buoyancy, and buoyancy reduces the gravity of weight.The present invention designs according to this principle.It is made up of two parts such as weight, magnet steel, reed switch, spring and shell up and down, and weight immerses in the controlled liquid, and reed switch is connected in the startup loop of liquid pump motor.

The present invention is achieved in that when controlled liquid level change, can make two to be in the weight immersion of different liquid levels or to expose liquid level respectively, buoyancy changes the total force of two weights, weight gravity and spring counter-force balance each other, spring length must change, also change with the spring one end magnet steel position that is fixed together, reed switch action when magnet steel is close to a certain degree with the reed switch that is in certain position, control liquid pump motor start-up or stop, thus realize that liquid level is by desired range.

The present invention compares with the fluid level controller of other type, and it not only has cancellation float and electrode, the little material saving of volume, reliable operation is convenient to advantages such as installations, and control contact can be away from controlled liquid, it can be applicable to explosion-proof occasion.

Below in conjunction with accompanying drawing the present invention is described in further detail.

Fig. 1 is a structural drawing of the present invention.

With reference to Fig. 1, lower heavy punch (1), last weight (3) and magnet steel (6) link together with rope (2) and bayonet lock (7), magnet steel is under the counter-force combined action of the gravity of weight and spring (5), can move up and down along inner sleeve, bayonet lock (7) moves along the groove on the inner sleeve (8), and reed switch (10) and following reed switch (4) are being housed on the inner sleeve, and magnet steel, spring and inner sleeve are loaded in the shell ［ 11 ］.During feed flow, make controlled liquid level be between two weights, as ignore the gravity of magnet steel and rope, what spring (5) pressure was the aerial total force of two weights and liquid to the buoyancy of lower heavy punch (1) is poor, gravity and spring counter-force balance each other, magnet steel (6) is positioned at reed switch (10) and reaches the centre position of reed switch (4) down, and two reed switchs all do not move.When liquid level drops to lower heavy punch (1) upper end position and continues to descend, lower heavy punch exposes liquid level gradually, liquid reduces gradually to the buoyancy of lower heavy punch, and two weights increase gradually to the pressure of spring (5), and spring shortens magnet steel and moves down, when lower heavy punch will all expose liquid level, magnet steel (6) makes down reed switch (4) action, promptly opens junction closure, closes the contact disconnection, opens the startup loop that contact acts on liquid pump motor, liquid pump motor starts, and liquid level rises.Along with liquid level rises, lower heavy punch immerses in the liquid gradually, its gravity is reduced, move on the magnet steel, when lower heavy punch all immersed liquid, magnet steel returned to the centre position of two reed switchs again, and following reed switch also recovers original state, because start the self-sustaining effect in loop, liquid pump motor remains in operation.When liquid level rises to weight (3) lower end position and continues to rise, last weight immerses in the liquid gradually, liquid increases gradually to the buoyancy of last weight, and the total force of two weights reduces gradually, the spring elongation, move on the magnet steel, when last weight (3) will all immerse liquid, last reed switch (10) action was opened the contact connection and is closed the contact disconnection, close the startup loop that contact acts on liquid pump motor, liquid pump motor stops.When the last weight of liquid level decline all exposed liquid level, magnet steel returned to the centre position again, and last reed switch recovers original state.Liquid level continues to descend, and repeats said process again, and liquid level is remained between the pairing liquid level of lower heavy punch.During discharge opeing, opposite with said process.Change the length of rope, can change easily controlled liquid level height and between distance.

As mentioned above, when lower heavy punch all exposed liquid level, the spring pressure was two weights total force in air, and magnet steel is positioned at extreme lower position.When last weight all immersed liquid, the spring pressure was two weights poor to two weight buoyancy of total force and liquid in air, and magnet steel is positioned at the extreme higher position.If on the different liquid levels of needs observation, weight and corresponding reed switch are installed all, and the spring counter-force is adapted with it, reed switch corresponding on corresponding liquid level moves, and makes corresponding pilot lamp luminous, then can be made into fluid level gauge, thereby realize remote observation liquid level.

Only interrelate with very thin rope between control contact and the weight, can change the rope pull direction with pulley, thereby can make the control contact away from controlled liquid, reed switch is in the airtight glass shell, so this controller can be applicable to require explosion-proof occasion.

Claims

1, a kind of fluid level control device, it is characterized in that it by being dipped in lower heavy punch (1), last weight (3), the rope (2) in the controlled liquid and placing the last reed switch (10) of shell (11), following reed switch (4), magnet steel (6), spring (5) and bayonet lock parts such as (7) to form, last reed switch (10) and following reed switch (4) lay respectively at the top and the bottom of magnet steel (6).

2, press claims 1 described device, it is characterized in that magnet steel (6) and spring (5) are connected with last weight (3) and lower heavy punch (1) by bayonet lock (7) and rope (2), last reed switch (10) reaches down, and reed switch (4) is subjected to magnet steel (6) control, the position of magnet steel (6) is controlled by controlled liquid level, and the contact of reed switch (4) was connected in the control loop of liquid pump motor under last reed switch (10) reached.