CN201094071Y

CN201094071Y - Testing apparatus of fluid materials opto-electronic material position

Info

Publication number: CN201094071Y
Application number: CNU2007200142614U
Authority: CN
Inventors: 董福贵; 董奕均
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-30
Filing date: 2007-08-30
Publication date: 2008-07-30
Anticipated expiration: 2017-08-30

Abstract

The utility model provides a photoelectric detection device of a fluid material level, which consists of an emission circuit and a receiving circuit. The emission circuit comprises a rectification circuit, a modulation circuit and a luminotron, all of which are connected with a power circuit and optical signals to an object under detection. In the receiving circuit, the reflected light to be detected is received by a sensor and then an electric signal is transmitted to the modulation circuit, a connected display or executive circuit after being processed by an amplifying circuit. A power circuit supplies power to the amplifying circuit through a rectification and voltage regulator circuit. The utility model has the advantages of simple structure, wide sphere of application, minimal maintenance, strong resistance to dust, corrosion, vibration and shock and withstand voltage performance. Complicated electric circuits and mechanical drive components are avoided, and as a result, malfunctions are avoided due to the use of a photoelectric sensor technology, thus the instrument is reliable in conducting level control and giving alarms, free of adjustment, easy to maintain, not subject to environment affection and able to run for a long term in succession.

Description

Fluid foods photoelectricity material-level detecting device

Technical field

The utility model belongs to pick-up unit, particularly relates to a kind of fluid foods photoelectricity material-level detecting device.

Background technology

The detection of the controlling level in solid material (pellet, powder) storehouse; at present all be to adopt the blocking rotary type level-sensing device to detect the height of control material level in China basically; when material level reaches the height of technological requirement; the closing of contact or the disconnection of blocking rotary type level-sensing device switch; send alerting signal; alert is noted, the interlocking action protection of the line correlation of going forward side by side.But the prior art situation and the instrumentation itself of just present blocking rotary type level-sensing device; still there is some drawback; such as: 1. in measuring testing process; the powder of material is in the sealing ring of coupling shaft is immersed in regular meeting; and the rotation of coupling shaft is blocked; cause coupling shaft to lose rotating and make instrument malfunction, and then effect out of hand.2. rotor rotates because blocking rotary type level-sensing device switch adopts the 220VAC motor driven, and the power supply of 220VAC power supply may damage human body, has insecurity, is a unsafe factor.3. blocking rotary type level-sensing device volume of switch is big, and is relatively heavier, is not easy to regular job and maintenance.4. because blocking rotary type level-sensing device switch belongs to the mechanical type instrument, maintenance is bigger, has increased maintainer's labour intensity.5. to adopt the little microswitch zonula occludens of mechanical type motor type relay to get electric for blocking rotary type level-sensing device switch, the closing of contact, and the output node signal reaches the control purpose.And the mechanical type microswitch is easy to damage, relay contact also exists loose contact and node catabiosis and whole control loop to have misoperation or the phenomenon of being failure to actuate takes place.

Summary of the invention

The utility model is intended to overcome the deficiencies in the prior art, and a kind of fluid foods photoelectricity material-level detecting device simple in structure, sensitive is provided.

Fluid foods photoelectricity material-level detecting device of the present utility model is made of radiating circuit and receiving circuit, and radiating circuit is rectification circuit, the modulation circuit of power circuit connection and is loaded with luminotron that light signal is to detected material a; Receiving circuit is that detected reflected light is received by sensor, and electric signal is delivered to demodulator circuit, connected demonstration or executive circuit through amplifying circuit, has power circuit to power to amplifying circuit through regulator rectifier circuit.

Fluid foods photoelectricity material-level detecting device of the present utility model adopts the 24VDC power supply, and 24VDC belongs to safe voltage, and all there are protective effect in human body and equipment; and owing to adopt the 24VDC power supply, consumed power is little, reaches power savings; reduce production costs, increase economic efficiency.

Fluid foods photoelectricity material-level detecting device of the present utility model has adopted the reflection-type photoelectric sensing detecting device, as detecting element to height of materials, when the rising of material charge level reaches the set upper limit height of technological requirement, detecting element is subjected to blocking of material, and optical sensor sends the signal of closure or disconnection, be transported among the DCS in the controller, carry out sound and light alarm, carry out automatic interlock protection simultaneously, stop to carry out convey materials to this feed bin, or start the written-out program of material automatically, the material of this feed bin is outwards carried; When the material face drops to feed bin lower limit height; photoelectric sensor sends the signal of closure or disconnection; be delivered to and carry out sound, light warning among the DCS, carry out automatic chain control protection simultaneously, stop the outside convey materials of this feed bin or start the outside simultaneously carrying out convey materials to this feed bin.

Fluid foods photoelectricity material-level detecting device of the present utility model is applied widely, can powdery, graininess, the lump material in the airtight feed bin of opening feed bin be detected, and reports to the police and control automatically, can be widely used in the actual industrial production.Its advantage is: simple in structure, maintenance is very little, has good dust-proof, anticorrosion, antidetonation, shock-resistant and withstand voltage properties.Owing to adopt photoelectric sense technology, there is not complicated electric wiring, there is not any mechanical transmission component, and then avoid the appearance of various misoperations, it is very reliable to make the material level control of this instrument report to the police, and need not debug, for ease of maintenaince, not affected by environment, long-time running continuously.

Description of drawings

Figure of description is a fluid foods photoelectricity material-level detecting device structural representation of the present utility model.

Embodiment

Fluid foods photoelectricity material-level detecting device of the present utility model is made of radiating circuit 1 and receiving circuit 2.Radiating circuit 1 is rectification circuit 4, the modulation circuit 5 of power circuit 3 connections and is loaded with luminotron 6 that light signal is to detected material a; Receiving circuit 2 is that detected reflected light is received by sensor 7, and electric signal is delivered to demodulator circuit 9, connected demonstration or executive circuit 10 through amplifying circuit 8, has power circuit 3 to give amplifying circuit 8 power supplies through regulator rectifier circuit 11.

Principle of work is: fluid foods photoelectricity material-level detecting device is that the power between optical transmitting set and the optical receiver is changed the variation that is converted into electric current, utilize object to be detected blocking or reflect to light beam, reach by the synchronization loop gating circuit and to survey that object has or not, and detected material is not limited, and the object of all energy reflection rays all can be detected.

Input current when input circuit, make the light emitting diode energising, make input circuit on reflective optical system, when converting light signal to, the luminous ejaculation of optical transmitting set, when light beam irradiates arrives object to be detected, when the light of the q.s that the optoelectronic switch optical transmitting set is emitted reflexes to the silicon phototriode window of sensor of optical receiver, make the conducting of silicon phototriode, thereby big electric current output is arranged, its contact action, so, photoswitc has just produced the switching signal output that power supply is arranged, otherwise its contact resets, thereby reaches the purpose of warning.

Claims

1. fluid foods photoelectricity material-level detecting device is made of radiating circuit (1) and receiving circuit (2), it is characterized in that radiating circuit (1) is rectification circuit (4), the modulation circuit (5) of power circuit (3) connection and is loaded with luminotron (6), light signal is to detected material a; Receiving circuit (2) is that detected reflected light is received by sensor (7), and electric signal delivered to demodulator circuit (9), connect to show or executive circuit (10) have power circuit (3) to give amplifying circuit (8) power supply through regulator rectifier circuit (11) through amplifying circuit (8).