CN2208716Y

CN2208716Y - Liquid display controller

Info

Publication number: CN2208716Y
Application number: CN 94228980
Authority: CN
Inventors: 赵方灏; 张继周
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-06-21
Filing date: 1993-06-21
Publication date: 1995-09-27
Anticipated expiration: 2003-06-21

Abstract

The utility model provides a liquid display controller, which can monitor and control the liquid level and the temperature, etc., of liquid. The utility model is characterized in that two liquid passing screws are arranged on the upper end and the lower end of a box body; transparent organic glass is sealed in the front of the box body; the inner of the box body is provided with a thermometer with a dial; a transparent float is arranged in a slide groove between the dial and the box body; the upper limit position and the lower limit position of the liquid level of liquid in the slide groove are provided with a pair of infrared emitting and receiving pipes; a temperature sensor is arranged on the lower end of the slide groove; the pair of infrared emitting and receiving pipes and the temperature sensor are respectively connected with a liquid level controlling circuit and a temperature controlling circuit. The utility model has the advantages of simple equipment, and easy use and repair.

Description

Liquid display controller

The utility model relates to a kind of device that is used for controlling the casing liquid position.

At present, be used for showing and to control the device of casing liquid level more that what have directly places casing with liquid level sensor, by many devices such as conversions, can realize control to liquid, the circuit complexity, reliability is lower, also has a kind of device, be with leading to the liquid screw with in tested liquid introduction self casing, be located at interior index dial and the thermometer of self casing, measuring the position and the temperature of liquid, equipment is simple, test is directly perceived, but can not realize liquid level and temperature auto control.

It is simple in structurely can realize the liquid level display controller of control automatically to liquid level and fluid temperature again that the purpose of this utility model provides a kind of.

Technical solution of the present utility model is: a kind of liquid level display controller, the casing 2 that studs with clear glass 1 in front is provided with logical liquid screw 3 and reaches and logical liquid screw 3 corresponding nut 4 and O-ring seals 5, casing 2 inner chambers are equipped with the thermometer that has index dial 67 of surveying liquid level, it is characterized in that: be provided with lighttight float 9 in the chute 8 that index dial 6 and casing 2 are constituted, in chute 8 liquid level on, the lower limit place is provided with infrared emission respectively and receives pipe T1, T2 and T3, T4 receives pipe T1 with infrared emission, T2 and T3, T4 is connected to liquid level control circuit 10.

Be provided with temperature sensor WC in the lower end of chute 8, be connected to temperature-control circuit 11 with temperature sensor WC.

The utility model is compared with prior art, liquid level can be shown, fluid temperature shows that liquid level control, fluid temperature control collection are one, and be simple in structure, uses easy to maintenance.

Fig. 1 is the synoptic diagram of the utility model embodiment.

Fig. 2 is the cut-open view of the utility model embodiment.

Fig. 3 is the utility model embodiment control circuit schematic diagram.

Below in conjunction with drawings and Examples the utility model is further described, as Fig. 1, Fig. 2, shown in Figure 3: casing 2 is a casting structure, the front of casing 2 is packaged with transparent organic glass 1, on the top of casing and the bottom be respectively equipped with logical liquid screw 3 and with logical liquid screw 3 corresponding nut 4 and O-ring seals 5, the thermometer 7 that has index dial 6 is equipped with in organic glass 1 back, between the back of index dial 6 and the casing 2 chute 8 is arranged, chute 8 is provided with float 9, the two ends liquid level upper limit of chute 8 inwalls and lower limit place stud with infrared emission respectively and receive pipe T1, T2 and T3, T4, be connected to resistance R 1 with luminotron T1, be connected to resistance R 2 with receiving tube T2, the output termination capacitor C 7 of receiving tube T2, C1, capacitor C 7, C1 and resistance R 1, another termination oscillating integrated circuit IC1(NE555 of R2), oscillating integrated circuit IC1(NE555) capacitor J1 is succeeded in output.

With luminotron T3 be connected to resistance R 3, with receiving tube T4 be connected to resistance R 4, receiving tube T4 output termination capacitor C 8, C2, and another termination oscillating integrated circuit IC2(NE555 of resistance R 3, R4), oscillating integrated circuit IC2(NE555) output succeed capacitor J2.

Be provided with sensor WC in the lower end of chute 8, be connected to the anode of resistance R 7 and operational amplifier T7 with temperature sensor WC, the negative terminal of operational amplifier T7 is connected to resistance R 8, R9, the output terminal of the other end of resistance R 9 and operational amplifier T7 joins, the output termination oscillating integrated circuit IC3 of operational amplifier T7, also be connected to telecommunications device W1 with oscillating integrated circuit IC3, resistance R 5 and capacitor C 4, resistance R 6 that the output termination of oscillating integrated circuit IC3 is in parallel and capacitor C 3 and relay J 3 also are connected to resistance R 12 and light emitting diode T5 with relay J 3, the output terminal of operational amplifier T7 also with oscillating integrated circuit IC4(NE555) join, turn round and look at IC circuit 4 with vibration collection and also be connected to potentiometer W2, resistance R 11, capacitor C 6, the output relay termination J4 of oscillating integrated circuit IC4, the resistance R 10 of joining and being in parallel with relay J 4, capacitor C 5 and resistance R 13 that is in series and light emitting diode T6.

Principle of work, when the utility model connects well with the container of being controlled after, liquid in the container enters in the casing 1 by the logical liquid screw 3 of casing 2 upper and lower sides, by transparent organic glass 1, can observe liquid level condition in the container, liquid level just often in the container, its liquid level should be in more than the following stomidium of casing 1, mercury thermometer always is immersed in the liquid like this, can read the temperature of liquid in containers by transparent organic glass observer, when the liquid level change in the casing 1, float 9 will fluctuate along chute 8 with liquid level.Because of float is an opaque article, when two ends stud with the infrared emission reception to pipe T1, T2 and T3, T4 about in the of 8 through chute, will trigger optoelectronic switch, realize the output of liquid level control signal by liquid level control circuit.Stud with temperature sensor WC in the lower end of chute 8, temperature sensor WC always is immersed in the liquid, by realizing the output of temperature control signals with the temperature sensor WC temperature-control circuit that joins.

Infrared emission, receive two reference mark of liquid level up and down that extremely pipe T1, T2 and T3, T4 placed the liquid display controller respectively.Under the normal condition, infrared receiving tube receives the infrared light of power valve, is in conducting state, and 2 pin of the integrated circuit NE555 that is connected with T4 with T2 are in low level, and it exports 3 pin is high level, and relay J 1 and J2 do not work.When the float in the liquid display controller fluctuates two ends with liquid, will cover optical channel, T2 or T4 end, and 2 pin of NE555 rise to high level, and it exports 3 pin is low level, and 1 stroke of J2 of relay J works on power, output liquid level control signal.

That temperature sensor adopts is integrated temperature sensor AD590, is embedded in the lower end of liquid display controller.AD590 is sent to the amplifier T7 of control circuit with the temperature signal of liquid, and the signal that T7 is big with anti-phase side is sent to connected integrated circuit NE555 pin 2, the triggering level of the variable resistor W1 of 5 pin of NE555 or W2 decision pin 2.Along with the temperature rising of liquid, the output of AD590 increases, and by amplifier T7, the 2 pin level of NE555 is descended.When dropping to the threshold level of setting, trigger NE555,3 pin of NE555 become high level, relay J 3 or J4 action, output temperature control signal.Utilize the mercury thermometer of liquid display controller, can be on-the-spot the output setting value of design temperature control.Method is that the temperature with liquid is heated to the temperature that will set, regulates adjustable potentiometer W1 or W2 then, and luminotron T5 or T6 are just lighted, and this moment, the mercury thermometer temperature indicative was exactly the temperature of setting, and can establish 2 temperature controls by W1 and W2.

Claims

1, a kind of liquid level display controller, the casing [2] that studs with clear glass [1] in front is provided with logical liquid screw [3] and reaches and corresponding nut of logical liquid screw [3] [4] and O-ring seal [5], casing [2] inner chamber is equipped with the thermometer that has index dial [6] [7] of surveying liquid level, it is characterized in that; Be provided with lighttight float [9] in the chute [8] that index dial [6] and casing [2] are constituted, the upper and lower limit place of liquid level is provided with the infrared emission reception respectively to pipe T1, T2 and T3, T4 in chute [8], receives with infrared emission pipe T1, T2 and T3, T4 are connected to liquid level control circuit [10].

2, liquid level display controller according to claim 1 is characterized in that: the lower end at chute ［ 8 ］ is provided with temperature sensor WC, is connected to temperature-control circuit ［ 11 ］ with temperature sensor WC.

3, liquid level display controller according to claim 1, it is characterized in that: described liquid level control circuit ［ 10 ］ is for to be connected to resistance R 1 with luminotron T1, be connected to resistance R 2 with receiving tube T2, another termination oscillating integrated circuit IC1 output of output termination capacitor C 7, C1, capacitor C 7, C1 and the resistance R 1 of receiving tube T2, R2, oscillating integrated circuit IC1 output relay termination J1.

4, liquid level display controller according to claim 2, it is characterized in that: described temperature-control circuit ［ 11 ］ is the anode that is connected to resistance R 7 and operational amplifier T7 with sensor WC, the negative terminal of operational amplifier T7 is connected to resistance R 8, R9, the output terminal of the other end of resistance R 9 and operational amplifier T7 joins, the output termination oscillating integrated circuit IC3 of operational amplifier T7, also be connected to potentiometer W1 with oscillating integrated circuit IC3, resistance R 5 and capacitor C 4, resistance R 6 that the output termination of oscillating integrated circuit IC3 is in parallel and capacitor C 3, the output terminal of operational amplifier T7 also joins with oscillating integrated circuit IC4, also is connected to potentiometer W2 with vibration collection or IC circuit 4, resistance R 11, capacitor C 6, the output relay termination J4 of oscillating integrated circuit IC4, the resistance R 10 of joining and being in parallel with relay J 4, capacitor C 5.