CN2482209Y

CN2482209Y - Automatic liquid level controller

Info

Publication number: CN2482209Y
Application number: CN 01212332
Authority: CN
Inventors: 罗宏武
Original assignee: Dongfeng Motor Corp
Current assignee: Dongfeng Motor Corp
Priority date: 2001-01-16
Filing date: 2001-01-16
Publication date: 2002-03-13
Anticipated expiration: 2011-01-16

Abstract

The utility model relates to a liquid level automatic controller connected with a control box 1, an upper limit float ball 2, a lower limit float ball 3 and a heavy object 4 in series through a soft rope 5. The core part is the control box 1 which mainly consists of a casing seat 12, a brass tension bar 19, a compression spring 11, a soft iron core 17, ad a movable bear frame 16 suited at the upper end of the exicrcle of a copper pipe 15. A fixed plate 7 is welded on one side along the movable bear frame 16, a microswitch 6 is arranged on the fixed plate 7, a lever 9 with a corner is arranged in the space interval of the microswitch 6, the movable bear frame 16 and the copper pipe 15, a corner end is movably hinged on the fixed plate 7 through a pin, and arranged under the moving contact of the microswitch 6, an adjusting screw 3 is threaded through the lever 9 as a supporting point to be supported on the movable bear frame 16, an arc shaped magnet 10 is welded at the other end of the lever 9, and a casing 20 is clipped at the outer edge of the casing 20. The structure of the utility model is simple, the adjustment range is large, and the utility model can be used for the automatic control of a variety of fluid levels of containers with opening, and sealed pressure vessels.

Description

The liquid automatic control device

A kind of liquid automatic control device relates to various liquid, automatic control of liquid level, comprises the liquid level control of open containers or sealed pressure vessel.

Fluid level controller commonly used has electronic level formula and tongue tube float-ball type.The electronic level formula is three electrode bars to be installed control liquid level on insulation board, its shortcoming is to be applied to conducting liquid, and because extremely rod has electric current to flow through, electrode can oxidation fouling, fouling, insulation board make moist etc. and interelectrode resistance to be changed and make Control Failure.Tongue tube float-ball type liquid-level switch mainly is made up of the pipe and the ball float of a lower seal, and two tongue tubes in the pipe are controlled the upper and lower spacing of liquid level respectively, in the overcoat ball float magnet are housed and control liquid level.Tongue tube float-ball type liquid-level switch has certain explosion prevention function, but owing to size, the liquid level of container requires to have nothing in common with each other, must or select producer's specified standard size to producer's customization and just can meet the demands, and installs to bother, and adjusts inconvenient.

The purpose of this utility model provides a kind of simple in structure, easy to adjust, reliable operation, adjustable range is big, and is widely used in various automatic control of liquid level.

The object of the present invention is achieved like this: soft rope 5 is with control box 1, upper limit ball float 2 and lower limit ball float 3 and weight 4 serial connections, and control box 1 is the core of liquid automatic control device.Mainly be by shell block 12, be installed on the double end hollow bolt 14 on the shell block 12, the copper pipe 15 that is connected with bolt 14 1 head threads, pass the hollow brass pull bar 19 of bolt 14, be enclosed within compression spring 11 and soft iron core 17 on the pull bar 19, be enclosed within travel(l)ing rest 16 compositions such as grade of copper pipe 15 cylindricals upper end, brass pull bar 19 1 ends are draw-in groove, other end mantle fiber dress ring 13, ring 13 joins with ball float 2 by soft rope 5, the relative position of travel(l)ing rest 16 on copper pipe 15 is fixing by dog screw 18, face down bonding along travel(l)ing rest 16 is connected to fixed head 7, adorn a sensitive switch 6 on the fixed head 7, arrange that in the interval of sensitive switch 6 and travel(l)ing rest 16 and copper pipe 15 one has the lever 9 at turning, the turning end is movably articulated on the fixed head 7 by pin, and place below sensitive switch 6 moving contacts, adjust screw 3 and pass lever 9 and be supported on the travel(l)ing rest 16, the other end of lever 9 arc-shaped magnet 10 that is welded as fulcrum; Outer rim at shell block 12 clamps shell 20.Copper pipe 15 also can use pipe material such as stainless steel, nylon, plastics to replace.

The utility model compared with prior art has the following advantages: 1. owing to adopt soft rope to connect between the control box, upper limit ball float, lower limit ball float three, so fluid level controller can be in the 0.1-50m scope step-less adjustment; 2. because controlled liquid level and electric appliance circuits are isolated fully,, has certain explosion prevention function so can be used for open containers or sealed pressure vessel; 3. the state protection function is arranged, need not auxiliary relay and can directly drive monophase machine or contactor.

Most preferred embodiment of the present utility model is illustrated in conjunction with the following drawings;

Fig. 1 is the utility model schematic diagram.

Fig. 2 is a control box structure chart in the utility model.

Among the figure: 1-control box, 2-upper limit ball float, 3-lower limit ball float, 4-weight, 5-soft rope, 6-sensitive switch, 7-fixed head, 8-lever, 10-arc-shaped magnet, 11-compression spring, 12-shell block, 13-ring, 14-double end hollow bolt, 15-copper pipe, 16-travel(l)ing rest, 17-soft iron core, 18-dog screw, 19-brass pull bar, 20-shell.

Know from Fig. 1: the utility model is by soft rope 5 control box 1, upper limit ball float 2, lower limit ball float 3 and weight 4 to be connected in series, and weight 4 is used for the location, prevents that ball float from twining or drift is too far away, can remove when tested liquid level is more shallow.Control box 1 is the core of liquid automatic control device, by shell block 12, be installed on the double end hollow bolt 14 on the shell block 12, the copper pipe 15 that is connected with bolt 14 1 head threads, pass the hollow brass pull bar 19 of bolt 14, be enclosed within compression spring 11 and soft iron core 17 on the pull bar 19, be enclosed within travel(l)ing rest 16 compositions such as grade of copper pipe 15 cylindricals upper end, brass pull bar 19 1 ends are draw-in groove, other end mantle fiber dress ring 13, ring 13 joins with ball float 2 by soft rope 5, the relative position of travel(l)ing rest 16 on copper pipe 15 is fixing by dog screw 18, face down bonding along travel(l)ing rest 16 is connected to fixed head 7, adorn a sensitive switch 6 on the fixed head 7, arrange that in the interval of sensitive switch 6 and travel(l)ing rest 16 and copper pipe 15 one has the lever 9 at turning, the turning end is movably articulated on the fixed head 7 by pin, and place below sensitive switch 6 moving contacts, adjust screw 3 and pass lever 9 and be supported on the travel(l)ing rest 16, the other end of lever 9 arc-shaped magnet 10 that is welded as fulcrum; Outer rim at shell block 12 clamps shell 20.Copper pipe 15 is selected copper tube for use in the present embodiment.

The course of work of the present utility model: (1). when

ball float

2,3 all is higher than liquid level (being in lower limit), by the weight pulling brass pull bar 19 of two ball floats self, spring 11 compressions, soft iron core 17 moves down.Near soft iron core 17 moves down into arc-shaped magnet 10 during the position, the moment that the gravitation of 10 pairs of soft iron cores 17 of magnet produces on lever 9 greater than the elastic force of sensitive switch 6 upper spring sheets in the moment that produces on the lever 9, magnet 10 is to soft iron core 17 direction adhesives, drive lever 9 and depress sensitive switch 6, sensitive switch 6 is connected, and pump is started working.The gravity of the elastic force of spring 11 and two ball floats adds the gravitation vertical component balance of 10 pairs of soft iron cores 17 of magnet at this moment.

(2). liquid level rises, lower limit ball float 3 is lower than liquid level (or floating on liquid level), when reaching upper limit ball float 2 not yet, the power that ball float 3 acts on the spring 11 is zero, spring 11 extends a little, and elastic force reduces, and the gravitation vertical component of 10 pairs of soft iron cores 17 of magnet increases, the gravity of elastic force and ball float 2 adds the gravitation vertical component balance of 10 pairs of iron cores 17 of magnet, and iron core 17 displacements are little; At this moment, magnet is to the moment of the gravitation generation of iron core 17, and still greater than the moment that elastic force produced of sensitive switch 6 upper spring sheets, sensitive switch 6 continues to connect, and pump works on.

(3). when liquid level rose to upper limit ball float 2, the power that ball float 2 acts on the spring 11 reduced, and spring 11 continues elongation, and soft iron core 17 reduces rapidly with the gravitation of magnet, and spring 11 promotes the iron cores 17 gravitation district that speeds away.When the moment that gravitation produced of 10 pairs of iron cores 17 of magnet during less than the moment that elastic force produced of sensitive switch 6 upper spring sheets, sensitive switch 6 promotes levers 9 and rotates, and arc-shaped magnet 10 is lifted, and sensitive switch 6 disconnects, and pump quits work.

(4). along with liquid level descends gradually, upper limit ball float 2 leaves liquid level, and soft iron core 17 moves down, because arc-shaped magnet 10 is far away with the distance of soft iron core 17, the rotating torque of the less generation of its gravitation is also very little.Liquid level continues to descend, and reaches lower limit ball float 3, and soft iron core 17 continues to shorten with the distance of arc-shaped magnet 10, and its gravitation increases, and the moment of generation also increases, and lever 9 rotates when lower limit ball float 3 leaves liquid level, sensitive switch 6 closures, and pump is started working again.So go round and begin again, the discharge opeing process is opposite with it.

Claims

One kind by soft rope 5, with soft rope 5 with the liquid automatic control device that ball float 2 links to each other with 3, it is characterized in that:

1.1 ball float 2 and 3 also joins with control box 1 and weight 4 respectively by soft rope 5;

1.2 control box 1 is by shell block 12, be installed on the double end hollow bolt 14 on the shell block 12, the copper pipe 15 that is connected with bolt 14 1 head threads, pass the hollow brass pull bar 19 of bolt 14, be enclosed within compression spring 11 and soft iron core 17 on the pull bar 19, be enclosed within travel(l)ing rest 16 compositions such as grade of copper pipe 15 cylindricals upper end, brass pull bar 19 1 ends are draw-in groove, other end mantle fiber dress ring 13, ring 13 joins with ball float 2 by soft rope 5, the relative position of travel(l)ing rest 16 on copper tube 15 is fixing by dog screw 18, face down bonding along travel(l)ing rest 16 is connected to fixed head 7, adorn a sensitive switch 6 on the fixed head 7, arrange that in the interval of sensitive switch 6 and travel(l)ing rest 16 copper pipes 15 one has the lever 9 at turning, the turning end is movably articulated on the fixed head 7 by pin, and place below sensitive switch 6 moving contacts, adjust screw 3 and pass lever 9 and be supported on the travel(l)ing rest 16, the other end of lever 9 arc-shaped magnet 10 that is welded as fulcrum; Outer rim at shell block 12 clamps shell 20.

Liquid automatic control device according to claim 1 is characterized in that: copper pipe 15 also can use pipe material such as stainless steel, nylon, plastics to replace.