CN212300519U - Material level meter based on fluorescence effect - Google Patents
Material level meter based on fluorescence effect Download PDFInfo
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- CN212300519U CN212300519U CN202020532859.8U CN202020532859U CN212300519U CN 212300519 U CN212300519 U CN 212300519U CN 202020532859 U CN202020532859 U CN 202020532859U CN 212300519 U CN212300519 U CN 212300519U
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- level gauge
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Abstract
The utility model relates to the technical field of material level gauges, specifically a material level gauge based on fluorescence effect, including the feed bin, the upper end feed inlet department of feed bin is equipped with pan feeding bin mouth flange, the upper end inner wall surface of feed bin still fixedly connected with liquid fluorescent agent sprinkler, the inside wall surface of feed bin is equipped with fluorescence detection module, the lower extreme of feed bin is equipped with the discharge gate, be equipped with the feed bin agitator above the discharge gate, in the feed bin that the feed bin agitator set up; whether the material is in the height of upper limit material level in can accurate judgement material storehouse in the dark surrounds through spectral analysis, its measurement reliability and durability all are stronger than hindering and revolve formula charge level indicator, and stability and the accuracy of light signal compare in ultrasonic signal and radar signal have the advantage simultaneously, are difficult for producing false signal, and the signal is difficult for receiving the influence. The device is simple in design structure, convenient to arrange, high in accuracy and high in application value.
Description
Technical Field
The utility model relates to a material charge level indicator technical field specifically is a material charge level indicator based on fluorescence effect.
Background
The physical characteristics of various tested materials in industrial production have large differences. According to the form of medium, the material is divided into solid, liquid and solid-liquid mixture. The solid medium comprises biomass granular material, raw coal, ash and the like; the liquid medium comprises water, acid and alkali, urea solution, etc.; the solid-liquid mixed medium is lime slurry and the like. The solid medium can be subdivided into pulverulent, for example ash; and granular, such as biomass pellets and slag. Liquid media are classified by corrosiveness into non-corrosive and corrosive, e.g., water and oil are non-corrosive, and acids, bases, and urea are corrosive. The temperature of the medium to be measured is divided into normal temperature and high temperature. The medium characteristics play a crucial role in the selection of the level gauge and ensure that the level gauge stably works under the conditions of suitable medium and environment.
The level meter is classified into a contact type and a non-contact type according to whether the level meter is in contact with a measured medium or not. Contact type such as tuning fork level gauge, rotation-resisting type level gauge, and non-contact type such as passive nuclear radiation level gauge. The level gauge is divided into analog quantity measurement and on-off quantity measurement according to an output signal. The capacitance material (liquid) level meter is an analog quantity material level meter, and the reed pipe liquid level meter is a switch quantity material level meter. Level gauges are divided into direct and indirect measurements in the manner of measurement. Radar and ultrasonic level gauges are direct measurements, and pressure transmitters are indirect measurements. The level meter is classified into a traditional type and a novel type according to time. A weight type charge level indicator and a differential pressure transmitter, which belong to the traditional measurement mode; the radio frequency admittance appears in recent years and belongs to a novel measurement mode.
(1) Rotation-resisting type level indicator
The working principle of the rotation-resistant controller is as follows: an alternating current micro motor is adopted to drive the monitoring blade to rotate at a low speed after speed reduction, and when the material level of the material rises to block the rotation of the blade, the detection mechanism generates rotary displacement around the main shaft. This displacement first causes a microswitch to be actuated, signaling the presence of material. Then another microswitch is acted to cut off the power supply of the micromotor to stop rotating. This condition will remain as long as the level of material in the bin is constant.
When the material level is lowered and the detection blade is not blocked any more, the detection mechanism is restored to the original state by the spring tension. First, a micro switch is operated to turn on the motor to rotate. And then the other microswitch acts to send out a material-free signal, and as long as no material blocks the rotation of the monitoring blade, the state is kept all the time, and the device belongs to a switching quantity level meter.
(2) Ultrasonic and radar level gauge
The ultrasonic level gauge utilizes the acoustic characteristics of ultrasonic waves, namely the propagation speed of the ultrasonic waves in the air is constant under certain conditions, so that the distance from a probe to the level is calculated by measuring the time taken for the ultrasonic waves to propagate from the probe to the surface of the level and return to the probe, and the actual level can be obtained by subtracting the distance from the total height of a groove. The core components of the ultrasonic level gauge are a measuring probe, a microprocessor and the transmission, the reception and the processing of signals, which are completed through the measuring probe and the microprocessor, and belong to an analog level gauge.
The radar level gauge utilizes the echo ranging principle, and a horn-shaped or rod-shaped antenna of the radar level gauge emits microwaves to the surface of a material to be measured, and the microwaves are reflected when being transmitted to the surface of the material with different relative dielectric constants and are received by the antenna. The time difference between the transmitted wave and the received wave is in direct proportion to the distance between the material level and the antenna, and the distance can be known by measuring the propagation time, and the device belongs to an analog quantity material level meter.
The rotation-resisting type material level meter has the defects of poor measurement accuracy, easy damage of a mechanical rotating device and a rotating blade, low reliability and low durability.
Ultrasonic level gauges have the disadvantage that the material is deposited too loosely or the surface has too great a roughness, which causes the energy of the ultrasonic waves to be scattered and absorbed, which causes attenuation of the echo energy and affects the accuracy of the level measurement.
The radar type material level gauge has the defects that the accumulation form of materials can influence the measurement precision to generate false signals, and electromagnetic signals are easily influenced by the dielectric constant of the materials, so that the accuracy of material level measurement is reduced.
Disclosure of Invention
An object of the utility model is to provide a material charge level indicator based on fluorescence effect:
1. the problem of contact hinder soon charge level indicator easily damage and the interior material of feed bin pile up the form and produce the measuring error is solved, promote charge level measurement's reliability and accuracy.
2. By using the stability of the optical signal, the problem that the ultrasonic signal and the electromagnetic signal are easily interfered can be solved, and the stability of material level measurement is improved.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a material charge level indicator based on fluorescence effect, includes the feed bin, the upper end feed inlet department of feed bin is equipped with pan feeding storehouse mouth flange, the upper end inner wall surface of feed bin still fixedly connected with liquid fluorescent agent sprinkler, the inside wall surface of feed bin is equipped with fluorescence detection module, the lower extreme of feed bin is equipped with the discharge gate, the discharge gate top is equipped with the feed bin agitator, in the feed bin that the feed bin agitator set up.
Preferably, the liquid fluorescent agent spraying device comprises an infrared sensor, a switching value output signal sending module, a motor, a liquid tank and a sprayer; infrared sensor and fluid reservoir fixed connection are in the inner wall upper end of feed bin, infrared sensor gives the drive circuit of module connection motor through output switching value signal, motor control sprinkler, the fluid reservoir is connected to the sprinkler.
Preferably, the motor is fixedly connected to the inner wall of the storage bin, and an output shaft of the motor is connected with the cam through a coupling; the sprayer comprises a spray head and a pressure production pump, the pressure production pump is communicated with the spray head and the liquid tank, a piston rod is arranged in the pressure production pump, the piston rod is provided with a piston spring, and the cam is matched with the piston rod.
Preferably, the spray head is arranged towards the feed inlet of the storage bin.
Preferably, fluorescence detection module includes fluorescence spectrum appearance probe and ultraviolet irradiator, fluorescence spectrum appearance probe and ultraviolet irradiator set up two relative inside wall surfaces at the feed bin, fluorescence spectrum appearance probe and ultraviolet irradiator are located same horizontal plane, fluorescence spectrum appearance probe is connected with signal cable, signal cable connection has fluorescence spectrum analysis appearance, fluorescence spectrum analysis appearance electricity is connected with CRT equipment.
Preferably, a light-transmitting and dust-proof cover for the probe of the fluorescence spectrometer is arranged outside the probe of the fluorescence spectrometer, and a light-transmitting and dust-proof cover for the ultraviolet irradiator is arranged outside the ultraviolet irradiator.
Preferably, both ends of the bin stirrer are connected with stirrer motors.
Preferably, an electromagnetic valve is arranged between the liquid inlet of the pressure production pump and the liquid tank.
Preferably, the inner wall surface of the bin is covered with a fluorescence eliminating agent.
Compared with the prior art, the beneficial effects of the utility model are that:
this material charge level indicator based on fluorescence effect can accurately judge through spectral analysis whether the material (solid-state) is in the height of upper limit material level in the material storehouse that is in the dark surrounds, and its measurement reliability and durability are all stronger than hindering and revolve formula charge level indicator, and light signal's stability and accuracy compare in ultrasonic signal and radar signal and have the advantage simultaneously, are difficult for producing false signal, and the signal is difficult for receiving the influence. The device is simple in design structure, convenient to arrange, high in accuracy and high in application value.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the liquid fluorescent agent spraying device of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1 pan feeding bin mouth flange, 2 liquid fluorescent agent sprinkler, 3 fluorescence spectrum appearance probe printing opacity dust cover, 4 fluorescence spectrum appearance probes, 5 ultraviolet irradiator printing opacity dust cover, 6 ultraviolet irradiator, 7 feed bin agitator, 8 agitator motor, 9 signal cable, 10 fluorescence spectrum appearance, 11CRT equipment, 12 feed bins, 13 infrared sensor, 14 motor, 15 fluid reservoir, 16 shower nozzle, 17 solenoid valves, 18 piston spring, 19 cams, 20 pressure production pumps, 21 piston rods.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a material charge level indicator based on fluorescence effect, includes feed bin 12, and the upper end feed inlet department of feed bin 12 is equipped with pan feeding bin opening flange 1, and the upper end inner wall surface of feed bin 12 still fixedly connected with liquid fluorescent agent sprinkler 2, the inside wall surface of feed bin 12 are equipped with fluorescence detection module, and the lower extreme of feed bin 12 is equipped with the discharge gate, and the discharge gate top is equipped with feed bin agitator 7, in the feed bin 12 that feed bin agitator 7 set up.
The liquid fluorescent agent spraying device 2 comprises an infrared sensor 13, an output switching value signal sending module, a motor 14, a liquid tank 15 and a sprayer; the infrared sensor 13 and the liquid tank 15 are fixedly connected to the upper end of the inner wall of the storage bin 12, the infrared sensor 13 outputs a switching value signal to a driving circuit of the module connection motor 14, the motor 14 controls the sprayer, and the sprayer is connected with the liquid tank 15.
Wherein, the motor 14 is fixedly connected with the inner wall of the storage bin 12, and the output shaft of the motor 14 is connected with a cam 19 through a coupling; the sprayer comprises a spray head 16 and a pressure production pump 20, the pressure production pump 20 is communicated with the spray head 16 and the liquid tank 15, a piston rod 21 is arranged in the pressure production pump 20, the piston rod 21 is provided with a piston spring 18, and a cam 19 is matched with the piston rod 21.
Wherein the spray head 16 is arranged towards the feed opening of the silo 12.
Wherein, fluorescence detection module includes fluorescence spectrum appearance probe 4 and ultraviolet irradiator 6, and fluorescence spectrum appearance probe 4 and ultraviolet irradiator 6 set up in two relative inside wall surfaces of feed bin 12, and fluorescence spectrum appearance probe 4 and ultraviolet irradiator 6 are in same horizontal plane, and fluorescence spectrum appearance probe 4 is connected with signal cable 9, and signal cable 9 is connected with fluorescence spectrum analysis appearance 10, and fluorescence spectrum analysis appearance 10 electricity is connected with CRT equipment 11.
Wherein, the outside of fluorescence spectrometer probe 4 is equipped with fluorescence spectrometer probe printing opacity dust cover 3, and the outside of ultraviolet irradiator 6 is equipped with ultraviolet irradiator printing opacity dust cover 5.
Wherein, the both ends of feed bin agitator 7 all are connected with agitator motor 8.
Wherein, an electromagnetic valve 17 is arranged between the liquid inlet of the pressure production pump 20 and the liquid tank 15.
Wherein, the inner wall surface of the bin 12 is covered with a fluorescence eliminating agent.
Principle of operation
According to the material level meter based on the fluorescence effect, before the material is stored in the bin 12, paint with a fluorescence eliminating agent is coated on the inner wall of the bin 12, so that the inner wall of the bin 12 is prevented from being stained with a fluorescent agent to influence the detection precision and accuracy. After the material falls into feed bin 12 through the pan feeding mouth, infrared sensor 13 detects the material and gives the module with signal transfer to output switching value signal, give module processing back driving motor 14 through output switching value signal, motor 14 drives sprinkler 16 and sprays the fluorescent agent, the material fully mixes with the fluorescent agent through feed bin agitator 7, fluorescence spectrometer probe 4 opens with ultraviolet irradiator 6, when the material arrives the upper limit material level of feed bin 12, through fluorescence spectrometer probe 10 analysis spectral intensity, show in CRT equipment 11 at last, confirm that the inside material of feed bin 12 has been in upper limit material level position.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (9)
1. The utility model provides a material charge level indicator based on fluorescence effect, includes feed bin (12), the upper end feed inlet department of feed bin (12) is equipped with pan feeding bin opening flange (1), a serial communication port, the upper end inner wall surface of feed bin (12) is liquid fluorescent agent sprinkler (2) of fixedly connected with still, the inside wall surface of feed bin (12) is equipped with fluorescence detection module, the lower extreme of feed bin (12) is equipped with the discharge gate, the discharge gate top is equipped with feed bin agitator (7), in feed bin (12) that feed bin agitator (7) set up.
2. The fluorescence effect based material level gauge according to claim 1, wherein the liquid fluorescent agent spraying device (2) comprises an infrared sensor (13), an output switching value signal module, a motor (14), a liquid tank (15) and a sprayer; infrared sensor (13) and fluid reservoir (15) fixed connection are in the inner wall upper end of feed bin (12), infrared sensor (13) are through the drive circuit who outputs switching value signal for module connection motor (14), motor (14) control sprinkler, fluid reservoir (15) are connected to the sprinkler.
3. The material level gauge based on the fluorescence effect is characterized in that the motor (14) is fixedly connected to the inner wall of the storage bin (12), and the output shaft of the motor (14) is connected with the cam (19) through a coupling; the sprayer comprises a spray head (16) and a pressure production pump (20), wherein the pressure production pump (20) is communicated with the spray head (16) and the liquid tank (15), a piston rod (21) is arranged in the pressure production pump (20), the piston rod (21) is provided with a piston spring (18), and the cam (19) is matched with the piston rod (21).
4. The fluorescence effect-based material level gauge according to claim 3, characterized in that the spray head (16) is arranged towards the feed opening of the silo (12).
5. The material level gauge based on fluorescence effect according to claim 1, characterized in that, fluorescence detection module includes fluorescence spectrum appearance probe (4) and ultraviolet irradiator (6), fluorescence spectrum appearance probe (4) and ultraviolet irradiator (6) set up in two relative inside wall surfaces of feed bin (12), fluorescence spectrum appearance probe (4) and ultraviolet irradiator (6) are in same horizontal plane, fluorescence spectrum appearance probe (4) are connected with signal cable (9), signal cable (9) are connected with fluorescence spectrum analysis appearance (10), fluorescence spectrum analysis appearance (10) are electrically connected with CRT equipment (11).
6. The material level gauge based on the fluorescence effect is characterized in that a transparent dustproof cover (3) of the fluorescence spectrometer probe is arranged outside the fluorescence spectrometer probe (4), and a transparent dustproof cover (5) of the ultraviolet light irradiator (6) is arranged outside the ultraviolet light irradiator.
7. The fluorescence effect-based material level gauge according to claim 1, characterized in that a stirrer motor (8) is connected to both ends of the bin stirrer (7).
8. The fluorescence effect-based material level gauge according to claim 3, characterized in that a solenoid valve (17) is arranged between the liquid inlet of the pressure production pump (20) and the liquid tank (15).
9. The fluorescence effect-based material level gauge according to claim 1, characterized in that the inner wall surface of the silo (12) is covered with a fluorescence eliminating agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020532859.8U CN212300519U (en) | 2020-04-13 | 2020-04-13 | Material level meter based on fluorescence effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020532859.8U CN212300519U (en) | 2020-04-13 | 2020-04-13 | Material level meter based on fluorescence effect |
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| CN212300519U true CN212300519U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020532859.8U Expired - Fee Related CN212300519U (en) | 2020-04-13 | 2020-04-13 | Material level meter based on fluorescence effect |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200256A (en) * | 2021-04-30 | 2021-08-03 | 国家能源集团科学技术研究院有限公司 | Stock bin with material level measuring device |
| CN113432671A (en) * | 2021-06-07 | 2021-09-24 | 江苏斯尔邦石化有限公司 | Device and method for measuring interface of charge level indicator based on EVA radioactive charge level indicator |
-
2020
- 2020-04-13 CN CN202020532859.8U patent/CN212300519U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200256A (en) * | 2021-04-30 | 2021-08-03 | 国家能源集团科学技术研究院有限公司 | Stock bin with material level measuring device |
| CN113200256B (en) * | 2021-04-30 | 2024-04-16 | 国家能源集团科学技术研究院有限公司 | From feed bin of taking material position measuring device |
| CN113432671A (en) * | 2021-06-07 | 2021-09-24 | 江苏斯尔邦石化有限公司 | Device and method for measuring interface of charge level indicator based on EVA radioactive charge level indicator |
| CN113432671B (en) * | 2021-06-07 | 2024-03-15 | 江苏斯尔邦石化有限公司 | Level gauge interface measuring device and method based on EVA (ethylene-vinyl acetate) radioactive level gauge |
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