CN201032462Y

CN201032462Y - Angle-type liquid level sensor

Info

Publication number: CN201032462Y
Application number: CNU2006201613259U
Authority: CN
Inventors: 于春明
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-04
Filing date: 2006-12-04
Publication date: 2008-03-05
Anticipated expiration: 2016-12-04

Abstract

The utility model relates to a sensor to detect liquid level with the rotation angle of a detecting rod. A fixing rod and the detecting rod are connected together via a rotation shaft, and the other end of the detecting rod is connected to a floater, when the detected liquid level is deep, an lengthened rod can be added to connect the floater and the detecting rod; the inside of the detecting rod is provided with a resistance and detecting switches (mercury switch and bead switch) placed in different angles; when the liquid level is changed, the floater pushes and axially rotates the detecting rod, and the detecting switches placed in different angles are shut off, and then detecting signals are emitted by signal wires, thus realizing the detection of liquid level. The attached figure is an embodiment that the utility model is used in domestic solar water heater.

Description

The angled type liquid level sensor

Affiliated technical field:

The utility model relates to the sensor that a kind of measuring liquid level changes.

Background technology

At present, the method that known BL obtains liquid level signal is a lot, as: electric pole type method, ball float method etc.Their required sensor accuracy height, performance are good, and corresponding cost is also high.Simultaneously electrode sensor is perishable because of existing electrode, scaling, and reason such as get rusty, thus lost efficacy easily, and should not the liquid that corruption liquid is arranged and should not conduct electricity (as: heat supply is to flow distilled water) be measured; The float-ball type measuring method when the measuring liquid level height change is big, needs the sensing of making longer, is difficult for making and transportation; Ultrasonic method, laser beam method complex structure, accuracy requirement height.

Summary of the invention:

In order to overcome the deficiency of electric pole type, the existence of float-ball type liquid level sensor, the utility model provides a kind of sensor, can the stepping output signal, how much set stepping progression by the switch that is arranged in the sensor, detect the height change of liquid level, be applicable to and measure various liquid, the utility model cost is low, is convenient to general occasion and is suitable for.

The technical scheme that its technical matters that solves the utility model adopts is: fixed bar links to each other with test rod by rotating shaft can 90 ° of rotations, the test rod other end is provided with ball float, mercury cut-off or ball switch are housed as detector switch in the test rod, switch how much determined output stepping progression, it is precision, detector switch is fixed in circuit and extremely goes up, adjust the conducting angle difference of each switch, like this, test rod and ball float float on liquid level, when level change, ball float drives test rod and rotates along rotating shaft, the conducting successively of test rod internal switch, the electrical signal line output with liquid level change is connected to indoor display and realizes level gauging, when if detected liquid level change is big, one extension rod is set between test rod and ball float, and ball float drives test rod by extension rod and rotates, and realizes the level gauging of different depth.

The beneficial effects of the utility model are: simple in structure, reliable, be applicable to the level gauging of various liquid;

It is not tight that extension rod is made requirement, is convenient to install self-control.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is described

Fig. 1 is an electrical schematic diagram of the present utility model

Fig. 2 is the example that the utility model is used for the domestic solar water heater

Fig. 3 is that the utility model is used for the example that measuring liquid level changes container greatly.

Among Fig. 1, R is a divider resistance, and K is a detector switch

The resistance R series connection, K is in parallel with resistance, and detect original paper and be installed on test rod inside, when liquid level changes, corresponding switch closure, the corresponding resistance of short circuit, series connection all-in resistance change, and realize level gauging.

Embodiment:

Among Fig. 2, fixed bar 1 is fixed in solar water heater water tank 8 gaps by securing member 3, test rod 5 is connected with fixed bar 1 by rotating shaft 4, ball float 6 links to each other with test rod 5 and with liquid level change test rod 5 is rotated along rotating shaft 4, detector switch respective closed or disconnection in the test rod 5, signal is drawn by signal wire 2.

Figure 3 shows that another example, it and example difference shown in Figure 2 are that test rod 5 increases by an extension rod 7 between ball float 6, can realize that liquefaction changes the use the utility model that is combined more greatly.

Fig. 2 example, Fig. 3 example all can be installed on container one side or top with fixed bar according to installation requirement.

Claims

1. angled type liquid level sensor, fixed bar links to each other with test rod by rotating shaft, and ball float drives test rod, and it is characterized in that: test rod is built-in with detector switch, and test rod can be that 90 ° of rotations are done in the center of circle with the rotating shaft.

2. angled type liquid level sensor according to claim 1 is characterized in that: add an extension rod between test rod and ball float, to realize the level gauging of different depth.