CN101619990A - Flow detection sensor of pneumatic transmission powder - Google Patents
Flow detection sensor of pneumatic transmission powder Download PDFInfo
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- CN101619990A CN101619990A CN200910100231A CN200910100231A CN101619990A CN 101619990 A CN101619990 A CN 101619990A CN 200910100231 A CN200910100231 A CN 200910100231A CN 200910100231 A CN200910100231 A CN 200910100231A CN 101619990 A CN101619990 A CN 101619990A
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- 239000000843 powder Substances 0.000 title claims abstract description 58
- 238000001514 detection method Methods 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 title abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention relates to a flow detection sensor of pneumatic transmission powder, comprising a section of transparent pipe connected with a transmission pipeline. A light-emitting device and a photoelectric conversion device are correspondingly arranged on both sides of the transparent pipe; the light-emitting device spaces the transparent pipe and aims at the photoelectric conversion device; and the light-emitting device and the photoelectric conversion device are provided with light shading covers. The invention has the advantages of being capable of connecting a transmission pipeline to detect powder flow and powder thickness of key regions in the pipeline, outputting real-time signal of flow and thickness, and providing conditions for precision control of the flow or the thickness.
Description
Technical field:
When the present invention relates in the pipeline pneumatic conveying dusty material, the sensor that the concentration of powder in the pipeline is detected.
Background technology
Adopt gas to carry the method for dusty material to be widely used in industrial circles such as laser melting coating, surfacing, spraying, metallurgy, quick shaping as carrier.Powder is carried in the raising process even, accuracy are that powder is carried the common problem that faces in a plurality of applications, and the accuracy of powder operational throughput has influence on thickness, coating temperature and the coating quality of process floating coat with stable.
Dust feeder commonly used mainly adopts the adjusting of powder operational throughput to be realized the metered volume (groove volume, thread groove volume etc.) and the adjusting of motor speed, and powder output accuracy problem only relates to the category of the output powder of powder feeder.And in the powder course of conveying, even the powder output quantity of powder feeder delivery outlet is stable, through ducted conveying, powder arrives the operational throughput in conveyance conduit exit may not be accurately, stablize.This is because powder is in fact very complicated in ducted flow state, expects that with amount of powder contained in gas velocity, the air-flow, powder itself property etc. is relevant.Powder may be the suspension flow that relies on the air-flow dynamic pressure of high velocity stream to be transferred in ducted feed status, also may be the bolt stream that relies on the static pressure of air-flow to push, or the mode of movement between two kinds of stream conditions.Powder is when ducted transmission may be and when stagnation and blow away the state that hockets, therefore, the accuracy of powder feeder output powder can not guarantee stablizing by pipeline exit powder output after the pipeline transportation, in order to guarantee pneumatic transmission powder, must the state of key position powder transmission in the pipeline be detected in ducted stable transfer.
Summary of the invention
The present invention will solve in the existing pneumatic transmission powder technology, the powder shortcoming that each section flow velocity and concentration may uneven complex state can't be measured in pipeline provides a kind of and can insert the sensor that conveyance conduit detects the powder mass flow and the powder concn of critical area in the pipeline.
The flow detection sensor of pneumatic transmission powder, comprise one section transparent tube that inserts conveyance conduit, described transparent tube both sides are provided with light-emitting device and photoelectric conversion device accordingly, aim at described photoelectric conversion device across described transparent tube between described light-emitting device; Described light-emitting device and photoelectric conversion device are provided with light shield.
Further, described photoelectric conversion device connects a single-chip microcomputer by an amplifier, and described single-chip microcomputer connects a display and signal output port.
Further, also be connected with a signal conditioner between described amplifier and the single-chip microcomputer, described signal conditioner output is for the acquired signal of the standard of single-chip microcomputer use.
Principle of work of the present invention is: sensor is connected with conveyance conduit by pipe adapter, received by photoelectric conversion device after the transparent tube of the light that light-emitting device sends through being connected with the powder air-flow, the received light intensity of photoelectric conversion device is relevant with the flow of powder in the transparent tube, the big more light attenuation of powder mass flow is big more, and the light intensity that photoelectric conversion device obtains is just more little.Like this, can calculate the size of the powder mass flow of the transparent tube of flowing through by the electric signal that detects photoelectric conversion device output.
The present invention is applicable in the industrial circles such as laser melting coating, surfacing, spraying, metallurgy, quick shaping and carries out the detection of powder operational throughput by the occasion of strength and pipeline transportation metal powder and ceramic powders, also is applicable to the occasion that needs to detect the pneumatic transmission powder amount in the other field.
Advantage of the present invention is: can insert conveyance conduit the powder mass flow and the powder concn of critical area in the pipeline detected, and the real-time signal of delivery rate and concentration, for the precision control of flow or concentration provides condition.
Description of drawings
Fig. 1 is a schematic diagram of the present invention
Fig. 2 is a kind of application form of the present invention
Embodiment:
Embodiment one
With reference to Fig. 1:
The flow detection sensor of pneumatic transmission powder, comprise one section transparent tube 4 that inserts conveyance conduit, described transparent tube 4 both sides are provided with light-emitting device 3 and photoelectric conversion device 6 accordingly, and 3 of described light-emitting devices are aimed at described photoelectric conversion device 6 across described transparent tube 4; Described light-emitting device 3 and photoelectric conversion device 6 are provided with light shield 2.
Described photoelectric conversion device 6 connects a single-chip microcomputer 8 by an amplifier 7, and described single-chip microcomputer 8 connects a display 9 and signal output port 10.
Also be connected with a signal conditioner 11 between described amplifier 7 and the single-chip microcomputer 8, described signal conditioner 11 outputs are for the acquired signal of the standard of single-chip microcomputer 8 uses.
The selection aspect of device:
Light-emitting device is chosen: can select highlighted light emitting diode or low-power laser generator for use according to the difference of powder operational throughput, in the test that the present invention did, the powder operational throughput adopts highlighted light emitting diode that good effect is arranged in the 0-30g/min scope time; The powder operational throughput adopts 5mW laser generator effect better in the 20-100g/min scope time.
Photoelectric conversion device is chosen: photoresistance, photodiode, phototriode and photoelectric cell all can be used as optional photosensitive device, these photosensitive devices are by connecting to form photoelectric conversion device with operational amplifier, in the experiment of the present invention, the scheme that is adopted is to adopt photodiode as photoelectric conversion device, and the signal of light emitting diode output amplifies back output through operational amplifier.
Transparent tube: glass transparent pipe or plastic, transparent pipe all can be used as optional device, and what adopt in the present invention's experiment is the plastic, transparent pipe.
Principle of work of the present invention is: sensor is connected with conveyance conduit 5 by pipe adapter 1, received by photoelectric conversion device 6 after the transparent tube 4 of the light that light-emitting device 3 sends through being connected with the powder air-flow, the received light intensity of photoelectric conversion device 6 is relevant with the flow of powder in the transparent tube 4, the big more light attenuation of powder mass flow is big more, and the light intensity that photoelectric conversion device 6 obtains is just more little.Like this, can calculate the size of the powder mass flow of the transparent tube 4 of flowing through by the electric signal that detects photoelectric conversion device 6 outputs.
Embodiment two
At powder sending quantity is preferred a kind of scheme in the application scenario of 0-30g/min, with reference to Fig. 2:
The difference part of present embodiment and embodiment one is: light-emitting device 3 adopts highlighted red light emitting diodes, and transparent tube 4 adopts the plastic, transparent pipe, and photoelectric conversion device 6 adopts photodiode.Signal amplifier 7 adopts operational amplifier, and the effect of signal amplifier 7 is that the electric signal that photoelectric conversion device 6 is exported is carried out processing and amplifying, then amplifying signal is flowed to single-chip microcomputer 8 and signal conditioner 11.
The electric signal that single-chip microcomputer 8 receiving signal amplifiers 7 send is analyzed this signal the demonstration powder mass flow value of back control charactron display 9 and by serial communication protocol the powder mass flow value is sent to communication port 10.
Charactron display 9 is used for showing the powder mass flow value that single-chip microcomputer 8 calculates.
The preferred version of communication port 10 is to adopt the RS232 interface, and communication port 10 is used for sending the instrument that other need these data with what single-chip microcomputer 8 calculated to the powder mass flow value.The preferred version of signal conditioner 11 is the conditioning modes that adopt the output of 4-20mA electric current.
All the other are identical.
The described content of this instructions embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910100231A CN101619990A (en) | 2009-06-25 | 2009-06-25 | Flow detection sensor of pneumatic transmission powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910100231A CN101619990A (en) | 2009-06-25 | 2009-06-25 | Flow detection sensor of pneumatic transmission powder |
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| Publication Number | Publication Date |
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| CN101619990A true CN101619990A (en) | 2010-01-06 |
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| CN200910100231A Pending CN101619990A (en) | 2009-06-25 | 2009-06-25 | Flow detection sensor of pneumatic transmission powder |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD20100049A2 (en) * | 2010-04-13 | 2011-11-30 | Николае БЕЛДИМАН | Device for measuring the fluid flow rate in the transport pipeline |
| CN107063366A (en) * | 2011-10-06 | 2017-08-18 | 诺信公司 | Powder stream is detected |
| CN112473260A (en) * | 2020-11-12 | 2021-03-12 | 刘绮龙 | Cloth bag dust removal device |
| CN113895966A (en) * | 2021-11-19 | 2022-01-07 | 湖北北新建材有限公司 | Gypsum board auxiliary material adds device |
| CN114055634A (en) * | 2021-11-19 | 2022-02-18 | 湖北北新建材有限公司 | Monitoring devices that gypsum board auxiliary material added |
-
2009
- 2009-06-25 CN CN200910100231A patent/CN101619990A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD20100049A2 (en) * | 2010-04-13 | 2011-11-30 | Николае БЕЛДИМАН | Device for measuring the fluid flow rate in the transport pipeline |
| CN107063366A (en) * | 2011-10-06 | 2017-08-18 | 诺信公司 | Powder stream is detected |
| CN107063366B (en) * | 2011-10-06 | 2019-11-08 | 诺信公司 | Powder stream detection |
| CN112473260A (en) * | 2020-11-12 | 2021-03-12 | 刘绮龙 | Cloth bag dust removal device |
| CN113895966A (en) * | 2021-11-19 | 2022-01-07 | 湖北北新建材有限公司 | Gypsum board auxiliary material adds device |
| CN114055634A (en) * | 2021-11-19 | 2022-02-18 | 湖北北新建材有限公司 | Monitoring devices that gypsum board auxiliary material added |
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Open date: 20100106 |