CN2348367Y

CN2348367Y - Float-type liquid level sensor

Info

Publication number: CN2348367Y
Application number: CN 98202786
Authority: CN
Inventors: 曲云峰
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-01
Filing date: 1998-04-01
Publication date: 1999-11-10
Anticipated expiration: 2008-04-01

Abstract

The utility model relates to a floater liquid level sensor, which is the improvement of a liquid level sensor. The floater liquid level sensor belongs to the meter sensors of the measuring class. A shaft in an outer shell is fixed with a transmission wheel, and the circumference of the transmission wheel is respectively suspended with a floater and a dropping plummet. When the level changes, the floater and the dropping plummet draw the transmission wheel to rotate. The change of the level height is converted to the change of angle, and the change of angle is conveyed outside a closed system through the magnetic field force. The utility model has the advantages of simple structure, easy fabrication and low cost.

Description

The float-type liquid level sensor

The utility model relates to the improvement of liquid level sensor, belongs to measuring the class gauge sensor.

Liquid level class sensor kind is extremely many, tens kinds of glass type, float-type, condenser type, ultrasonic type, radar type, optical fiber types etc. are arranged, but cut both ways, advantage and practical scope that oneself is respectively arranged, various defectives are also arranged, in response to the field and the occasion difference of usefulness, be difficult to substitute another kind of again with a kind of liquid level gauge.In float type level gauge, steel band float-type and magnetic float-type are arranged, the steel band float-type only is suitable for the measurement of normal pressure liquid level, the magnetic float-type has the resistance dry-reed, there are magnetic turnover panel and magnetic to turn over pillar, magnetic is also arranged to the flex effect formula, magnetic inductive and magnetic switch formula etc., all be to utilize float to drive magnet moves up and down to determine liquid level under the liquid buoyancy effect a kind of liquid level sensor, this magnetic float-type liquid level sensor complex structure, cost is very high, and float volume is big, difficulty of processing is big, and pressure-bearing is limited.

The purpose of this utility model provides a kind of simple and reliable for structure, liquid level sensor that cost is lower, applied widely.

The purpose of this utility model realizes by following technical proposals.

This float-type liquid level sensor is made of non-magnetic shell, is characterized in having power wheel on the axle in the enclosure, is wound with backguy on the circumference of power wheel, and an end of backguy is connected with float, and the other end is connected with the bob stone roller; The side of power wheel is fixed with internal magnet; Outside shell, have and the corresponding external magnet of internal magnet and the fixedly disk of external magnet and the back shaft of support disk.

This kind liquid level sensor principle is fairly simple, it is the utilization principle of moment balance, when liquid level change, the suffered buoyancy of liquid of float also changes thereupon, and original equilibrium state of weighing down stone roller and float composition changes, and affects the power wheel rotation by backguy, set up new equilibrium position, like this, the height change of liquid level just changes angle into and changes, and uses the transfer mode of magnetic field force that this angle variation is delivered to outside the closed system again.

Owing to adopt such scheme, this liquid level sensor can high temperature resistant, high pressure, and has explosion insulation performance, and is simple in structure simultaneously, with low cost, applied widely.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the floor map of second embodiment of power wheel.

Fig. 3 is the employed backguy synoptic diagram of second embodiment of power wheel.

Fig. 4 is the synoptic diagram of the 3rd embodiment of power wheel.

Among the figure: (1) weighs down stone roller power wheel, (2) float power wheel, (3) shell, (4) internal magnet, (5) external magnet, (6) are the disk of external magnet fixedly, (7) and tested container interface, (8) weigh down the stone roller backguy, (9) weigh down stone roller, (10) float backguy, (11) float, (12) axle, the back shaft of (13) support fixation external magnet disk.

Shown in Figure 1 is a kind of embodiment of the present utility model.Bob stone roller power wheel (1) and float power wheel (2) are that the nebenkern of an one is fixed on the axle (12), axle (12) is fixed on the shell (3), and axle (12) can rotate, and also can not rotate, when axle (12) rotated, whether power wheel (1) and (2) rotate around axle (12) all could; When axle (12) when not rotating, power wheel should rotate around axle (12); Be wound with on the circumference that weighs down stone roller power wheel (1) and weigh down stone roller backguy (8), an end of backguy (8) is fixed on and weighs down on the stone roller power wheel (1), and the other end is cut or polish jade with an emery wheel (9) and is connected with weighing down; Be wound with on the circumference of float power wheel (2) and weigh down stone roller backguy (8) direction opposite float backguy (10), an end of backguy (10) is fixed on the float power wheel (2), and the other end is connected with float (11); Internal magnet (4) is fixed on the side of float power wheel, and external magnet (5) is corresponding with internal magnet (4), and is fixed on the disk (6), and disk (6) should rotate around back shaft (13).

In measurement, when liquid level change, the suffered buoyancy of liquid of float also changes, the balanced system position that float, bob stone roller, power wheel, backguy and axle are formed is also along with change, float and bob stone roller will affect power wheel to rotate back and forth by backguy along with the rising and the reduction of liquid level, like this height change of liquid level by float, weigh down stone roller, backguy and power wheel and change angle into and change, the effect by inside and outside magnetic field of magnets power makes fixedly that the disk and the power wheel of external magnet rotate synchronously again.So just making the liquid level change transitions in the closed system is the angle variation of closed system outer disc.As for showing that can make the pointer identical with the clock and watch display packing by the disk driven gear shows, also can survey rotating speed or use the mode of counting to dock by Hall element with electronic display unit by position transducer.

Shown in Figure 2 is another embodiment of the utility model power wheel.Be that stone roller power wheel of the bob among Fig. 1 and float power wheel are merged into a gear shape power wheel, this gear shape power wheel is similar to the flywheel on the bicycle rear axle, when power wheel adopts the gear shape power wheel, backguy should be adopted chain bar shaped backguy shown in Figure 3, this backguy is also similar to the chain of bicycle, float backguy this moment and the backguy of bob stone roller are a backguy, and an end is connected with float, and the other end is connected with the bob stone roller.Principle of work is identical with Fig. 1 power wheel principle of work.

Shown in Figure 4 is the 3rd embodiment of the utility model power wheel.Be that stone roller power wheel of the bob among Fig. 1 and float power wheel are merged into a power wheel, will weigh down stone roller backguy and float backguy and merge into a backguy that backguy is on power wheel, an end is connected with float, and the other end is connected with the bob stone roller.Principle of work is identical with Fig. 1 principle of work.

The utility model is simple in structure, and processing and manufacturing is easy, and technology is little to the precision influence.In concrete the manufacturing, shell, axle, power wheel, float, bob stone roller all can adopt stainless steel to make, backguy adopts stainless steel wire, STAINLESS STEEL CHAINS, stainless steel chain all can, internal magnet adopts high temperature resistant magnet, external magnet and fixedly the disk of external magnet do not have specific (special) requirements, axle can make bearing into, improves sensitivity.

Claims

1, a kind of float-type liquid level sensor is made of non-magnetic shell, it is characterized in that having power wheel on the axle in the enclosure, is wound with backguy on the circumference of power wheel, and backguy one end is connected with the bob stone roller, and the other end is connected with float; The side of power wheel is fixed with internal magnet; Outside shell, have and the corresponding external magnet of internal magnet and the fixedly disk of external magnet and the back shaft of support disk.

2, float-type liquid level sensor according to claim 1, it is characterized in that power wheel is a nebenkern that weighs down an one of a stone roller power wheel and a float power wheel composition, on the circumference that weighs down the stone roller power wheel, be wound with and weigh down the stone roller backguy, an end that weighs down the stone roller backguy is fixed on and weighs down on the stone roller power wheel, and the other end is connected with the bob stone roller; Be wound with on the circumference of float power wheel and weigh down stone roller stayguy direction opposite float backguy, an end of float backguy is fixed on the float power wheel, and the other end is connected with float.

3, float-type liquid level sensor according to claim 1, it is characterized in that power wheel is a gear shape power wheel, backguy is chain bar shaped backguy, and the float backguy is a backguy with weighing down the stone roller backguy, span wire suspension end on the gear shape power wheel is connected with float, and the other end is connected with the bob stone roller.