CN110542696A - material online moisture measuring device and measuring method thereof - Google Patents
material online moisture measuring device and measuring method thereof Download PDFInfo
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- CN110542696A CN110542696A CN201910983886.9A CN201910983886A CN110542696A CN 110542696 A CN110542696 A CN 110542696A CN 201910983886 A CN201910983886 A CN 201910983886A CN 110542696 A CN110542696 A CN 110542696A
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- 239000000463 material Substances 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 41
- 238000007790 scraping Methods 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 15
- 238000005245 sintering Methods 0.000 abstract description 6
- 230000009191 jumping Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005574 cross-species transmission Effects 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
- G01N22/04—Investigating moisture content
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D5/00—Control of dimensions of material
- G05D5/02—Control of dimensions of material of thickness, e.g. of rolled material
- G05D5/03—Control of dimensions of material of thickness, e.g. of rolled material characterised by the use of electric means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a material online moisture measuring device and a measuring method thereof, wherein the measuring device comprises a microwave moisture meter, a scraping component positioned at the upstream of a microwave receiver and a material height detecting element positioned between the microwave receiver and the scraping component, and the microwave moisture meter and the material height detecting element are respectively in communication connection with a control computer; according to the measuring method, the top tip of the material is scraped by the scraping component, so that the thickness difference of the material is reduced, a foundation is laid for accurately measuring the moisture subsequently, and conditions are created; the actual height of the material is continuously detected through the material height detection element, the microwave moisture meter is started to measure the moisture of the material only under the condition that the thickness of the whole sintering material on the conveying belt meets the requirement and is uniform, the measurement under the condition that the material height is low is eliminated, the moisture value difference measured by the microwave moisture meter is small, the measurement value of the microwave moisture meter is small in jumping, and the measurement accuracy is greatly improved.
Description
Technical Field
The invention relates to the technical field of material moisture detection, in particular to a material online moisture measuring device and a material online moisture measuring method.
background
in a steel mill, a sintering material conveyer belt is generally used for conveying powdery iron ore mixture, and online moisture measurement is needed in the material conveying process. Microwave detection is a non-contact rapid detection technology, and can rapidly detect the moisture of materials without damaging the materials, so that the microwave detection can be applied to the field of moisture measurement. As shown in fig. 1, when a microwave moisture meter is used for online moisture measurement of a sintering material, a microwave emitter 21 of the microwave moisture meter is arranged between an upper belt 1 and a lower belt of a conveyor belt, a microwave receiver 22 of the microwave moisture meter is arranged above the upper belt 1, microwaves emitted by the microwave emitter 21 are received by the microwave receiver 22 after passing through a material a containing water, when the microwaves pass through the material containing water, the propagation speed and the intensity of the microwaves in the propagation direction can be changed differently, the propagation speed of the microwaves can be slowed down by the material containing water, the intensity of the microwaves is weakened, and the moisture content of the material can be calculated by the microwave moisture meter by detecting the change of physical properties of the microwaves after passing through the material. Because the powdered ore is interrupted the blanking by the feed opening of feed bin when the blanking, consequently, the powdered ore is a heap when falling on the conveyer belt, and the shape of every heap is approximately triangle-shaped, and heap and pile easily form disconnected material department B between, and it is inhomogeneous to lead to the thickness of the whole sintering material on the conveyer belt, and this has brought the difficulty for subsequent material moisture measurement, because of material thickness is inconsistent, causes the moisture value that microwave moisture meter measured to differ, has caused microwave moisture meter to measure the numerical value and has jumped, measures the accuracy and reduces.
Disclosure of Invention
in view of the above, the first technical problem to be solved by the present invention is: the on-line material moisture measuring device is high in measuring accuracy.
Based on a general inventive concept, the second technical problem to be solved by the present invention is: provides a material on-line moisture measurement method with high measurement accuracy.
In order to solve the first technical problem, the technical scheme of the invention is as follows: online moisture measuring device of material, online moisture measuring device of material includes:
Microwave moisture meter, microwave moisture meter including set up in the upper band of material conveyer belt and take down the microwave emitter between the area, and set up in the microwave receiver of the top of upper band, the online moisture measuring device of material still includes:
A scraper member disposed above the upper belt and upstream of the microwave receiver;
A material height detection element disposed above the upper belt and between the microwave receiver and the scraping member;
The microwave moisture meter and the material height detection element are respectively in communication connection with a control computer.
The scraping component comprises a cross beam arranged above the upper belt and a scraping plate arranged on the cross beam.
Wherein, the scraper is provided with a scraper overflow hole.
wherein, the material height detection element is a height sensor.
Wherein, along the direction of transport of material, the distance between height sensor and the microwave receiver is not less than 500 mm.
wherein, the control computer is connected with a display screen.
In order to solve the second technical problem, the technical solution of the present invention is: the measuring method of the material online moisture measuring device comprises the following steps:
(A) taking the height value of the scraper from the upper belt of the material conveying belt as a reference height value H0, inputting the reference height value H0 into a control computer, and setting the actual height value of the material as H;
(B) if H is more than H0, the tip of the material is scraped by the scraping component to form a material top plane, a material height detection element detects the height of the material top plane and transmits a detection signal to a control computer, the control computer sends an instruction, a microwave moisture meter is started, the moisture of the scraped material is detected, and the detection signal is transmitted to the control computer;
(C) if H is H0, the material height detection element detects the height of the top of the material and uploads a detection signal to the control computer, the control computer sends an instruction, the microwave moisture meter is started to detect the moisture of the material, and the detection signal is uploaded to the control computer;
(D) And if H is less than H0, the material height detection element detects the height of the material, and uploads a detection signal to the control computer, the control computer sends an instruction, the microwave moisture meter is closed, and the moisture of the material is not detected.
wherein, in the step (D), H0-H is more than or equal to 10 mm.
Wherein, the control computer is connected with a display screen, and the moisture value of the material is displayed by the display screen.
After the technical scheme is adopted, the invention has the following beneficial effects:
The material online moisture measuring device comprises a microwave moisture meter, a scraping component positioned at the upstream of a microwave receiver and a material height detecting element positioned between the microwave receiver and the scraping component, wherein the microwave moisture meter and the material height detecting element are respectively in communication connection with a control computer; when the measuring method is used for measuring the moisture of the material on line, the material height detecting element continuously detects the actual height of the material and uploads a detection signal to the control computer, if the control computer judges that the actual height value of the material is greater than or equal to the reference height value, an instruction is sent, the microwave moisture meter is started to detect the moisture of the material, and the detection signal is uploaded to the control computer; if the control computer judges that the actual height value of the material is smaller than the reference height value, sending an instruction, closing the microwave moisture meter, and not detecting moisture of the material with lower height; according to the measuring method, the microwave moisture meter is started to measure the moisture of the material only when the thickness of the integral sintering material on the conveying belt meets the requirement and is uniform, and the measurement under the condition of low material height is eliminated, so that the moisture value difference measured by the microwave moisture meter is small, the measurement value jitter of the microwave moisture meter is small, and the measurement accuracy is greatly improved.
when the actual height value of the material is larger than the reference height value, the scraping component plays a role in scraping the top tip of the material, so that the thickness difference of the material is reduced, a foundation is laid for accurately measuring the moisture subsequently, and conditions are created; because the scraper blade is provided with scraper blade flash hole, when the material was too much occasionally on the conveyer belt, partial material can spill over from scraper blade flash hole, neither can damage the scraper blade, has reduced the volume that the material shifted to both sides again, has avoided breaking away from the conveyer belt because of the material shifts too much to the scraper blade both sides and leads to the material width widen, avoids the material extravagant, does benefit to the environment clean and tidy.
Drawings
FIG. 1 is a schematic diagram of a prior art material on-line moisture measuring device;
FIG. 2 is a schematic view of an on-line moisture measuring device for materials according to an embodiment of the present invention;
FIG. 3 is a flow chart of a measuring method of the material on-line moisture measuring device according to an embodiment of the invention;
in the figure: 1, carrying out tape feeding; 21-a microwave emitter; 22-a microwave receiver; 3-a scraping component; 31-a cross beam; 32-a scraper; 321-scraper overflow hole; 4-a material level detection element; a-material; b-material breaking part.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
as shown in fig. 2, the online moisture measuring device for material according to the embodiment of the present invention includes: the microwave moisture meter, the scraping component 3 and the material height detecting element 4 are respectively in communication connection with the control computer.
The microwave moisture meter comprises a microwave emitter 21 arranged between an upper belt 1 and a lower belt (not specifically shown in the figure) of the material conveying belt, and a microwave receiver 22 arranged above the upper belt 1, wherein the microwave emitter 21 corresponds to the microwave receiver 22 in position.
Wherein the scraper member 3 is arranged above the upper belt 1 and upstream of the microwave receiver 22. Specifically, the scraping member 3 includes a cross member 31 provided above the upper belt 1, and a scraper 32 provided on the cross member 31. Further, the scraper 32 is provided with a scraper flash hole 321. When the actual height value of the material A is larger than the reference height value (namely the distance between the lower edge of the scraper 32 and the upper belt 1), the scraper 32 plays a role in scraping the top tip of the material, so that the thickness difference of the material is reduced, the material breakage position is compensated or reduced, a foundation is laid for accurately measuring the moisture subsequently, and conditions are created; when the material was too much occasionally on the conveyer belt, some material can spill over from scraper blade flash hole 321, neither can damage the scraper blade, has reduced the volume that the material shifted to both sides again, has avoided breaking away from the conveyer belt because of the material shifts too much to the scraper blade both sides and leads to the material width widen, avoids the material extravagant, does benefit to the environment clean and tidy.
wherein the material level detecting element 4 is arranged above the upper belt 1 and between the microwave receiver 22 and the scraping means 3. Specifically, the material height detecting element 4 is a height sensor. Wherein, along the direction of transmission of material, the distance between altitude sensor and microwave receiver 22 is not less than 500mm, reserves abundant time for altitude sensor to upload the signal to the control computer, control computer to microwave moisture meter send the instruction, microwave moisture meter opens or closes.
Wherein, the control computer is connected with a display screen, and the detected material moisture value is visually displayed through the display screen.
Referring to fig. 2 and 3, the measuring method of the material online moisture measuring device according to the embodiment of the invention comprises the following steps:
(A) Taking the height value of the lower edge of the scraper 32 from the upper belt 1 of the material conveying belt as a reference height value H0, inputting the reference height value H0 into a control computer, and setting the actual height value of the material as H;
(B) If H is more than H0, the tip of the material is scraped by the scraper 32 to form a material top plane, the material height detection element 4 detects the height of the material top plane and uploads a detection signal to the control computer, the control computer sends an instruction, the microwave moisture meter is started to detect the moisture of the scraped material, the detection signal is uploaded to the control computer, and the current detection moisture value is displayed through the display screen;
(C) if H is H0, the material height detection element 4 detects the height of the top of the material and uploads a detection signal to the control computer, the control computer sends an instruction, the microwave moisture meter is started to detect the moisture of the material and uploads the detection signal to the control computer, and the current detection moisture value is displayed through the display screen;
(D) And if H is less than H0, the material height detection element 4 detects the height of the material, and uploads a detection signal to the control computer, the control computer sends an instruction, the microwave moisture meter is closed, and detection is not performed.
Wherein, in the step (D), H0-H is preferably not less than 10 mm. Under the normal condition, the height of the material on the material conveying belt is about 500mm, and the microwave moisture meter can be started to detect under the condition that the actual height of the material is slightly lower than the scraping reference height (namely, within 10mm lower), so that the influence of a smaller height difference on a measurement result is smaller.
According to the material on-line moisture measurement method, the actual height of the material is continuously detected through the material height detection element, the microwave moisture meter is started to measure the moisture of the material only under the condition that the thickness of the integral sintering material on the conveying belt meets the requirement and is uniform, and the measurement under the condition of low material height is eliminated, so that the moisture value difference measured by the microwave moisture meter is small, the measurement value jitter of the microwave moisture meter is small, and the measurement accuracy is greatly improved.
the foregoing is illustrative of the preferred embodiments of the present invention, and details which have not been given to them are known to those skilled in the art, and the scope of the present invention is defined by the appended claims, and all equivalents which come within the spirit of the invention are therefore intended to be embraced therein.
Claims (9)
1. Online moisture measuring device of material, online moisture measuring device of material includes:
Microwave moisture meter, microwave moisture meter including set up in the upper band of material conveyer belt and take down the microwave emitter between the area, and set up in the microwave receiver of the top of upper band, its characterized in that, the online moisture measuring device of material still includes:
A scraper member disposed above the upper belt and upstream of the microwave receiver;
a material height detection element disposed above the upper belt and between the microwave receiver and the scraping member;
The microwave moisture meter and the material height detection element are respectively in communication connection with a control computer.
2. The on-line material moisture measuring device of claim 1, wherein the scraping means comprises a beam disposed above the upper belt, and a scraper disposed on the beam.
3. The material on-line moisture measuring device of claim 2, wherein the scraper is provided with a scraper flash hole.
4. The material on-line moisture measuring device of claim 1, wherein the material height detecting element is a height sensor.
5. the material on-line moisture measuring device of claim 4, wherein the distance between the height sensor and the microwave receiver is not less than 500mm along the material conveying direction.
6. the material on-line moisture measuring device of claim 1, wherein the control computer is connected with a display screen.
7. the measuring method of the material on-line moisture measuring device according to claim 1, characterized by comprising the following steps:
(A) Taking the height value of the scraper from the upper belt of the material conveying belt as a reference height value H0, inputting the reference height value H0 into a control computer, and setting the actual height value of the material as H;
(B) If H is more than H0, the tip of the material is scraped by the scraping component to form a material top plane, a material height detection element detects the height of the material top plane and transmits a detection signal to a control computer, the control computer sends an instruction, a microwave moisture meter is started, the moisture of the scraped material is detected, and the detection signal is transmitted to the control computer;
(C) if H is H0, the material height detection element detects the height of the top of the material and uploads a detection signal to the control computer, the control computer sends an instruction, the microwave moisture meter is started to detect the moisture of the material, and the detection signal is uploaded to the control computer;
(D) And if H is less than H0, the material height detection element detects the height of the material, and uploads a detection signal to the control computer, the control computer sends an instruction, the microwave moisture meter is closed, and the moisture of the material is not detected.
8. The method for measuring the online moisture content of the material as claimed in claim 7, wherein in the step (D), H0-H is more than or equal to 10 mm.
9. the method as claimed in claim 7, wherein the control computer is connected with a display screen, and the moisture value of the material is displayed by the display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910983886.9A CN110542696A (en) | 2019-10-16 | 2019-10-16 | material online moisture measuring device and measuring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910983886.9A CN110542696A (en) | 2019-10-16 | 2019-10-16 | material online moisture measuring device and measuring method thereof |
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| CN110542696A true CN110542696A (en) | 2019-12-06 |
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| CN201910983886.9A Pending CN110542696A (en) | 2019-10-16 | 2019-10-16 | material online moisture measuring device and measuring method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014550A (en) * | 2020-08-24 | 2020-12-01 | 湖南中联重科混凝土机械站类设备有限公司 | Method and device for detecting moisture content of aggregate and machine-readable storage medium |
| WO2022227745A1 (en) * | 2021-04-30 | 2022-11-03 | 三一汽车制造有限公司 | Material moisture content measurement apparatus and method, and concrete production and conveyer system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2004371A (en) * | 1977-09-17 | 1979-03-28 | Os Bad Rozwojowy Syst Mech Ele | Microwave measurement of moisture content |
| CN102175696A (en) * | 2011-02-10 | 2011-09-07 | 清华大学 | Method and device for measuring moisture of material |
| CN110261412A (en) * | 2019-07-26 | 2019-09-20 | 安徽天德智能装备制造有限公司 | A kind of microwave type intelligence grain moisture detector |
| CN210775279U (en) * | 2019-10-16 | 2020-06-16 | 潍坊力创电子科技有限公司 | On-line moisture measuring device for materials |
-
2019
- 2019-10-16 CN CN201910983886.9A patent/CN110542696A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2004371A (en) * | 1977-09-17 | 1979-03-28 | Os Bad Rozwojowy Syst Mech Ele | Microwave measurement of moisture content |
| CN102175696A (en) * | 2011-02-10 | 2011-09-07 | 清华大学 | Method and device for measuring moisture of material |
| CN110261412A (en) * | 2019-07-26 | 2019-09-20 | 安徽天德智能装备制造有限公司 | A kind of microwave type intelligence grain moisture detector |
| CN210775279U (en) * | 2019-10-16 | 2020-06-16 | 潍坊力创电子科技有限公司 | On-line moisture measuring device for materials |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014550A (en) * | 2020-08-24 | 2020-12-01 | 湖南中联重科混凝土机械站类设备有限公司 | Method and device for detecting moisture content of aggregate and machine-readable storage medium |
| WO2022227745A1 (en) * | 2021-04-30 | 2022-11-03 | 三一汽车制造有限公司 | Material moisture content measurement apparatus and method, and concrete production and conveyer system |
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