CN109470593B - Absolute method on-line moisture detector and detection method - Google Patents
Absolute method on-line moisture detector and detection method Download PDFInfo
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- CN109470593B CN109470593B CN201710802029.5A CN201710802029A CN109470593B CN 109470593 B CN109470593 B CN 109470593B CN 201710802029 A CN201710802029 A CN 201710802029A CN 109470593 B CN109470593 B CN 109470593B
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- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 238000011000 absolute method Methods 0.000 title claims abstract description 21
- 238000005303 weighing Methods 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000000523 sample Substances 0.000 claims description 116
- 238000000034 method Methods 0.000 claims description 31
- 238000005192 partition Methods 0.000 claims description 22
- 238000001035 drying Methods 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000002994 raw material Substances 0.000 description 9
- 238000005245 sintering Methods 0.000 description 7
- 239000008188 pellet Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
- G01N5/045—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder for determining moisture content
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Abstract
The utility model provides an absolute method online moisture detector, it includes rotary drum (1), set up microwave generator (2) at rotary drum (1) top, set up first weighing device (3) and the second weighing device (4) of setting outside rotary drum (1) in rotary drum (1) bottom, wherein be located the inside baffle (104) of rotary drum (1) and divide into four cavities with the inner space of rotary drum (1), the rotary drum lateral wall department that four cavities correspond is equipped with the opening, and rotary drum (1) has four stations: the rotary cylinder comprises a first station (c), a second station (d), a third station (e) and a fourth station (f), wherein fixed sealing baffles (105) are arranged at the side walls of the rotary cylinders corresponding to the second station (d), the third station (e) and the fourth station (f), and four chambers are circularly switched between the positions of the four stations. The invention can detect the real water content of the mixed material in a short time, and realize the real-time online detection of the water content of the mixed material.
Description
Technical Field
The invention relates to a device and a method for detecting moisture of materials, in particular to an absolute method on-line moisture detector for mixed materials and a detection method thereof, belonging to the field of raw material preparation in metallurgical sintering and pellet industry.
Background
In the field of metallurgical sintering and pelletizing, certain moisture is generally required in the process of mixing and making materials to provide necessary cohesiveness and adhesion for forming material pellets. The water comprises a part of water contained in the mineral aggregate, and the water is added in the mixing processing process, so that various raw materials are uniformly mixed, the materials are conveniently balled and granulated, and more sufficient reaction in the subsequent process is facilitated. Too low a water content reduces the cohesiveness of the raw material and affects the pelleting and granulating properties of the raw material. However, the moisture of the sintering raw materials is too high, such as concentrate powder is easy to agglomerate and adhere to a mineral groove, the accuracy of ingredients is influenced, the uniformity of the mixture is influenced, the face generated by the section of the tail of the sintering machine influences the quality of the sintering mineral, and the energy consumption of the sintering pellet process is increased when the water content is too high. In order to reduce energy consumption and to bring the pelletization process closer to the optimal water content, moisture detection of the mineral raw material is necessary.
The traditional sintering mixture detection adopts a drying method and off-line detection, but the analysis time is long, the moisture condition can not be reflected in real time, and the significance of guiding the process production is lacking. The existing moisture detection mostly adopts a neutron method, an infrared method or a microwave method, and the neutron method has ionization radiation and is less in application in a production field although the method solves the problem of long analysis time and can reflect the current data; when the appearance color, chemical composition and the like of the infrared material are changed, larger deviation of detection data can occur. For this purpose, calibration of the moisture detection parameters for each material is required before use. For the condition that the materials conveyed on one belt are uncertain, automatic water measurement of different materials is difficult to realize, detection parameters of a moisture meter are required to be manually adjusted according to the change condition of the materials on the belt, and when the types of the materials are frequently changed, the online detection of moisture is difficult to realize; the microwave method also cannot accurately detect the moisture content of the core of the substance.
These methods have complex detection equipment and theoretical solutions, and sometimes require specialized personnel to solve.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention aims to provide a moisture detector which has simple theoretical principle and can detect on line in real time and a detection method thereof.
According to a first embodiment of the present invention, there is provided an absolute method on-line moisture detector:
an absolute method on-line moisture detector comprises a (cylindrical) rotary drum, a plurality of microwave generators arranged at the top of the rotary drum, a first weighing device arranged at the bottom of the rotary drum and a second weighing device arranged outside the rotary drum. Four side wall plates are arranged on the peripheral edge of the bottom platform of the rotary cylinder, and side wall openings are reserved between the adjacent side wall plates, and the four side wall openings are all arranged. The side wall openings of the four rotary drums are distributed on the periphery of the rotary drum at equal angles or equal intervals, and four chambers are arranged on the bottom platform corresponding to the positions of the side wall openings. Wherein the (arc) partition inside the rotary drum divides the inner space of the rotary drum into four chambers, and the distal ends of the (arc) partition of the chambers are connected to the side wall of the rotary drum at both sides of the opening of the side wall of the rotary drum. The rotary drum has four stations: the first station, the second station, the third station and the fourth station. The fixed closing baffles are respectively arranged at the positions corresponding to the second station, the third station and the fourth station and correspond to the side wall openings when the rotary cylinder stays at the stations, and the four chambers are circularly switched between the positions of the four stations. The detector also includes a plurality (e.g., 4-10, preferably 6-8) of sample receptacles that are disposed in each of the four chambers of the rotary cylinder.
In the invention, the microwave generators are respectively arranged at the tops of the rotary drums above the second station, the third station and the fourth station. The first weighing device is arranged at the bottom of the rotary cylinder below the first station. In the invention, the rotary cylinder comprises a bottom platform, side wall plates, a top cover plate, a partition plate positioned in the rotary cylinder and fixed closing baffles arranged at the side walls of the rotary cylinder corresponding to the second station, the third station and the fourth station. Wherein the fixed closing baffle is connected with the cover plate at the top. The plurality of microwave generators are respectively arranged on the top cover plate of the rotary cylinder above the second station, the third station and the fourth station. The first weighing device is arranged at the lower part of the rotary drum bottom platform below the first station.
Four side wall plates are arranged on the edge of the bottom plate of the rotary drum, and side wall openings are reserved between the adjacent side wall plates, and the four side wall openings are all formed. The four rotary drum sidewall openings are equally angularly or equally spaced about the circumference of the drum. Four chambers are provided on the bottom platform (or turntable) corresponding to the positions of the sidewall openings. Each of the four chambers is surrounded by a (arcuate) baffle disposed on the bottom platform of the rotary drum and the distal ends of the (arcuate) baffles are connected to the side wall of the rotary drum on either side of the opening in the side wall of the rotary drum. Accordingly, the distal side of the chamber likewise has a chamber opening. I.e. the opening of the side wall of the rotary drum is also the opening of the chamber. Distal or distal as used herein refers to the outside of the central axis of the rotary cylinder (i.e., the rotational axis). The filled (or sample) sample container is fed (e.g., with a mechanical gripper) to the first station through an opening in the side wall of the rotary cylinder or through an opening in the chamber. After the four stations are operated, the unloaded sample containers are removed from the first station (e.g., using a robotic gripper) through the wall opening or the chamber opening.
Typically, a stationary closure flap is secured to the lower surface of the top deck. The closing baffle is used for closing the opening of the chamber. That is, the closure flap and the (dome) partition enclose an independent chamber. Thus, a fixed closure flap is also referred to as a fixed closure flap. More specifically, when a chamber with an opening surrounded by a (arcuate) partition rotates with a rotary drum or with a platform to a corresponding station (i.e., a second, third or fourth station), the opening is closed by a closing flap, at which point the closed chamber is surrounded by the partition, the bottom of the chamber (which is part of the platform), a cover plate and the closing flap. Of course, there is a gap between the lower surface of the cover plate and the top of the diaphragm to allow the rotary drum or platform to rotate freely.
Preferably, the detector further comprises a third weighing device disposed below the third station and located below the rotary drum bottom platform.
In the invention, the detector also comprises a motor, and the motor is arranged at the lower part of the rotary drum bottom platform and is used for driving the rotary drum to rotate.
In the invention, the four chambers or stations have equal included angles of 90 degrees with respect to each other by taking the axis of the rotary drum as the vertex of the angle.
Preferably, the detector further comprises a manipulator arranged outside the rotary cylinder, wherein the manipulator is used for taking materials and conveying the sample container filled with the materials into the first station, and is used for taking the sample container filled with the materials out of the first station and discharging the sample container filled with the materials.
According to a second embodiment of the present invention, there is provided an absolute method on-line moisture detector:
an absolute method on-line moisture detection method or a method for moisture detection by using the absolute method on-line moisture detector, the method comprising the following steps:
1) The second weighing device weighs the unfilled sample container (W 0 )；
2) The method comprises the steps that a mechanical arm is used for grabbing a sample of a material to be detected and sending the sample into a sample container, the mechanical arm sends the loaded sample container into a first station, or the mechanical arm is used for manually grabbing the sample of the material to be detected and sending the loaded sample container into the sample container and sending the loaded sample container into the first station;
3) A first weighing device located below the first station weighs the loaded sample containers (W 1 )；
4) After weighing, carrying out microwave drying on the sample container sequentially through a second station, a third station and a fourth station under the bearing and driving of a platform at the bottom of the rotary cylinder;
5) After the drying is finished, the sample container rotates back to the first station, and the first weighing device weighs the dried sample container (W 2 )；
6) According to formula (W 1 -W 2 )/(W 1 -W 0 ) Calculating the water content (%) of the gripped sample material;
7) The manipulator removes and discharges (e.g., onto a belt) the sample containers from the first station, or manually removes and discharges (e.g., onto a belt) the sample containers from the first station.
Preferably, steps 1-7 above are repeated a plurality of times (e.g., 3-7 times) and the actual moisture content of the material is detected by averaging the plurality of moisture content data.
Preferably, in step 4), the third weighing means weigh the sample holder while it is being dried at the third station, and if the weight does not change by 0.05g, preferably 0.02g, within 2 to 10 seconds, preferably 3 to 5 seconds, the sample material is considered to have been completely dried.
In the present invention, the rotary drum has four stations: the first station, the second station, the third station and the fourth station. Meanwhile, the inner space of the rotary cylinder is divided into four chambers by the partition plates, wherein the partition plates can be arranged in various shapes such as arc shapes. The four chambers are circularly switched between the positions of the four stations, namely the positions of the four stations are fixed, the four stations take the axis of the rotary drum bottom platform as the vertex of the angle, the four stations have equal included angles of 90 degrees, the positions of the four chambers are changed along with the rotation of the rotary drum bottom platform, but the four chambers take the axis of the rotary drum bottom platform as the vertex of the angle, the included angles of the four chambers are also 90 degrees, so that in the process that the chambers rotate along with the rotary drum bottom platform, one chamber is continuously matched (or overlapped) with the positions of each station, and the other three chambers are also the same.
In addition, four openings are formed in the side wall of the rotary cylinder corresponding to the four chambers. And microwave generators are respectively arranged at the tops of the second station, the third station and the fourth station, namely, the second station, the third station and the fourth station are microwave drying positions. Therefore, the side walls of the rotary drums corresponding to the second station, the third station and the fourth station are respectively provided with a fixed sealing baffle. Because the first station is an in-out station for the sample container to enter and exit the rotary cylinder, a fixed sealing baffle is not arranged at the first station. The fixed sealing baffle is connected with the cover plate at the top of the rotary cylinder, namely, the fixed sealing baffle and the cover plate at the top are not rotated along with the rotation of the platform at the bottom of the rotary cylinder, so that the fixed sealing baffle plays a sealing role, the three microwave drying stations are in a sealed working environment, microwaves are blocked from radiating outwards, and meanwhile, energy loss is reduced.
In the present invention, the first weighing device, the second weighing device and the third weighing device are electronic sensors or electronic balances. Wherein, the first weighing device and the second weighing device can execute the device and reciprocate. That is, the first weighing device and the second weighing device require an actuator to move up and down or lift the weighing tray. In addition, as an alternative, the lower parts of these weighing devices are fitted with jacking devices. That is, the first weighing device or the second weighing device is lifted by the lifting device, so that the sample container is supported by the first weighing device or the second weighing device (i.e., the sample container is supported by the lifting device and temporarily separated from the rotary drum bottom platform) to be weighed, and after weighing, the lifting device descends, and the sample container is placed on the rotary drum bottom platform again (i.e., is supported by the rotary drum bottom platform). The jacking device is not particularly limited, and a screw lifter or a hydraulic lifter may be generally used.
Generally, the lower part of the rotary drum bottom platform is provided with a supporting table for supporting the rotary drum in a horizontal state besides the arrangement of the driving motor, the first weighing device and the second weighing device. Preferably, at least 4 casters or rollers are mounted on the bottom of the detector or on the bottom of the support table for movement or transportation.
In the present application, the rotary drum may be provided in a variety of three-dimensional shapes such as a cylindrical shape. There is no particular requirement for the sample holder. Preferably, the sample holder (e.g., the cartridge bowl) is made of ceramic or glass (e.g., quartz glass). Are generally open. Preferably bowl-shaped or cup-shaped or bowl-shaped.
In this application, the diameter of the platform (or turntable) of the rotary drum is 0.5m-2.5m, preferably 0.7m-1.8m, more preferably 0.8m-1.5m. The height of the wall of the rotary drum is 12cm-90cm, preferably 15cm-70cm.
Compared with the prior art, the invention has the following beneficial effects:
1. the traditional drying method is used for measuring the moisture of the mixed materials, the detection and analysis time is too long, the moisture condition cannot be reflected in real time, and the production guiding effect cannot be achieved in time; the existing neutron method has ionization radiation and is less in application in the production field; the infrared method has low accuracy and insufficient measurement accuracy; the microwave heating and drying has the characteristics of rapidness, selectivity, uniformity, no inertia and the like, and can completely dry the mixed material in a very short time, so that the absolute method online moisture detector can detect the real moisture content of the mixed material in a very short time, and real-time online detection can be realized even if the material types are changed frequently;
2. the absolute method on-line moisture detector has smaller size, is convenient to transport and install, and does not need large-scale carrying equipment for maintenance.
3. The invention has simple operation, small driving power and low energy consumption.
The absolute method online moisture detector can obtain the mixing degree of the mixed materials after detecting the real moisture content of the mixed materials, so that the absolute method online moisture detector can be combined with a vertical type intensive mixer for processing pellet process raw materials in the metallurgical industry to realize the intellectualization of a pellet raw material mixing system, so that the mixing system operates under the optimal parameters, and is a great breakthrough of the industry technology; meanwhile, the energy consumption and the material consumption of the raw material treatment process can be obviously reduced, the pellet quality is improved, the production cost is reduced, and the method has important significance for technical progress of the industry.
Drawings
FIG. 1 is a front view of one design of an absolute on-line moisture detector of the present invention;
FIG. 2 is a front view of another design of the absolute on-line moisture detector of the present invention;
FIG. 3 is a top view of a rotary drum of the absolute on-line moisture meter of the present invention;
FIG. 4 is a diagram showing the internal structure of a rotary drum of the absolute method on-line moisture detector of the present invention.
Description of the drawings: 1: a rotary drum; 101: a (circular) platform (or turntable); 102: a wall plate; 103: a cover plate; 104: a partition plate; 105: fixing a closed baffle; 2: a microwave generator; 3: a first weighing device; 4: a second weighing device; 5: a third weighing device; 6: a motor; 7: a manipulator; 8: a sample container;
c: a first station; d: a second station; e: a third station; f: and a fourth station.
Detailed Description
According to a first embodiment of the present invention, there is provided an absolute method on-line moisture detector:
an absolute method on-line moisture detector comprises a (cylindrical) rotary drum 1, a plurality of microwave generators 2 arranged at the top of the rotary drum 1, a first weighing device 3 arranged at the bottom of the rotary drum 1 and a second weighing device 4 arranged outside the rotary drum 1. Four side wall plates 102 are provided on the outer peripheral edge of the bottom plate 101 of the rotary drum 1, and side wall openings are provided between adjacent side wall plates 102, and four side wall openings are provided in total. The four rotary drum side wall openings are distributed at equal angles or equal intervals on the periphery of the rotary drum 1, and four chambers are arranged on the bottom circular platform (or turntable) 101 corresponding to the positions of the side wall openings. Wherein a (arc) shaped partition 104 located inside the rotary drum 1 divides the inner space of the rotary drum 1 into four chambers, the distal ends of the (arc) shaped partition 104 of the chambers being connected to the rotary drum side wall 102 at both sides of the opening of the rotary drum side wall. The rotary drum 1 has four stations: a first station c, a second station d, a third station e and a fourth station f. Wherein fixed closing flaps 105 are respectively provided at positions corresponding to the second, third and fourth stations d, e and f and corresponding to the side wall openings of the rotary drum 1 when it is stopped at these stations, and four chambers are cyclically switched between the positions of the four stations.
The detector further comprises a plurality (e.g. 4-10, preferably 6-8) of sample containers 8, said sample containers 8 being placed in each of the four chambers of the rotary drum 1.
In the present invention, the microwave generator 2 is disposed at the top of the rotary drum 1 above the second, third and fourth stations d, e and f, respectively. The first weighing device 3 is arranged at the bottom of the rotary drum 1 below the first station c.
In the present invention, the rotary drum 1 includes a bottom platform 101, side wall plates 102, a top cover plate 103, a partition plate 104 positioned inside the rotary drum 1, and a fixed closing baffle 105 disposed at the side wall of the rotary drum corresponding to the second, third and fourth stations d, e and f. Wherein a stationary closure flap 105 is connected to the top cover plate 103. A plurality of microwave generators 3 are disposed on the rotary drum top cover 103 above the second, third and fourth stations d, e and f, respectively. The first weighing means 3 are arranged in the lower part of the rotary drum bottom platform 101 below the first station c.
Four side wall plates 102 are arranged at the edge of the bottom plate of the rotary drum, and side wall openings are reserved between the adjacent side wall plates 102, and the total of four side wall openings is four. The four rotary drum sidewall openings are equally angularly or equally spaced about the circumference of the drum. Four chambers are arranged on the turntable corresponding to the positions of the side wall openings. Each of the four chambers is surrounded by a (arcuate) partition 104 provided on the bottom platform of the rotary drum and the distal ends of the (arcuate) partitions 104 are attached to the side walls of the rotary drum on either side of the opening of the side walls of the rotary drum. Accordingly, the distal side of the chamber likewise has a chamber opening. I.e. the opening of the side wall of the rotary drum is also the opening of the chamber. Distal or distal as used herein refers to the outside of the central axis of the rotary cylinder (i.e., the rotational axis). The filled (or sample) sample container is fed (e.g., with a mechanical gripper) to the first station through an opening in the side wall of the rotary cylinder or through an opening in the chamber. After the four stations are operated, the unloaded sample containers are removed from the first station (e.g., using a robotic gripper) through the wall opening or the chamber opening.
Typically, a stationary closure flap 105 is secured to the lower surface of the top cover plate 103. The closing flap 105 serves to close the opening of the chamber. That is, the closing baffle 105 encloses a separate chamber with the (dome) partition 104. Thus, the fixed closure flap 105 is also referred to as a fixed closure flap. More specifically, when the chamber with the opening surrounded by the (arc-shaped) partition 104 rotates to the corresponding station (i.e., the second station d, the third station e, or the fourth station f) with the rotary drum 1 or with the platform 101, the opening is closed by the closing flap 105, and at this time, the closed chamber is surrounded by the partition 104, the bottom of the chamber (which is a part of the platform), the cover plate 103, and the closing flap 105. Of course, there is a gap between the lower surface of the cover plate 103 and the top of the spacer 104 to allow the rotary drum 1 or the platform 101 to freely rotate.
The bottom of each cavity is provided with a through hole. The upper part of the through hole is used for placing a sample container 8.
Preferably, the detector further comprises a third weighing device 5 arranged below the third station e and below the rotary drum bottom platform 101.
In the present invention, the detector further comprises a motor 6, and the motor 6 is disposed at the lower part of the bottom platform 101 of the rotary drum 1 and is used for driving the rotary drum 1 to rotate.
In the present invention, the four chambers or stations have equal angles of 90 ° with respect to each other at the apex of the angle of the axis of the rotary drum 1.
Preferably, the detector further comprises a manipulator 7 arranged outside the rotary drum 1, wherein the manipulator 7 is used for taking materials and feeding the sample container 8 filled with materials into the first station c, and is used for taking the sample container 8 filled with materials out of the first station c and discharging the materials.
According to a second embodiment of the present invention, there is provided an absolute method on-line moisture detector:
an absolute method on-line moisture detection method or a method for moisture detection by using the absolute method on-line moisture detector, the method comprising the following steps:
1) The second weighing device 4 weighs the unfilled sample container 8 (W 0 )；
2) The method comprises the steps that a mechanical arm 7 is adopted to grab a sample of a material to be detected and send the sample into a sample container 8, the mechanical arm 7 sends the loaded sample container 8 into a first station c, or the mechanical arm 7 manually grabs the sample of the material to be detected and sends the loaded sample container 8 into the sample container 8 and sends the loaded sample container 8 into the first station c;
3) The first weighing device 3 located below the first station c weighs the filled sample containers 8 (W 1 )；
4) After weighing, the sample container 8 is carried and driven by the rotary cylinder bottom platform 101 to sequentially pass through the second station d, the third station e and the fourth station f for microwave drying;
5) After the drying, the sample container 8 is rotated back to the first station c, and the first weighing device 3 weighs the dried sample container 8 (W 2 )；
6) According to formula (W 1 -W 2 )/(W 1 -W 0 ) Calculating the water content (%) of the gripped sample material;
7) The manipulator 7 takes out and discharges the sample container 8 from the first station c (for example, onto a belt), or manually takes out and discharges the sample container 8 from the first station c (for example, onto a belt).
Preferably, steps 1-7 above are repeated a plurality of times (e.g., 3-7 times) and the actual moisture content of the material is detected by averaging the plurality of moisture content data.
Preferably, in step 4), the third weighing means 5 weigh the sample holder 8 while the sample holder 8 is being dried at the third station e, and if the weight does not change by 0.05g, preferably 0.02g, within 2-10 seconds, preferably 3-5 seconds, the sample material is deemed to be completely dried.
Example 1
Referring to fig. 2 to 4, an absolute method on-line moisture detector comprises a cylindrical rotary drum 1, 3 microwave generators 2 arranged at the top of the rotary drum 1, a first weighing device 3 arranged at the bottom of the rotary drum 1, and a second weighing device 4 arranged outside the rotary drum 1. Wherein an arcuate partition 104 located inside the rotary drum 1 divides the inner space of the rotary drum 1 into four chambers. Openings are arranged at the side walls of the rotary cylinder corresponding to the four chambers. And the rotary drum 1 has four stations: a first station c, a second station d, a third station e and a fourth station f. The side walls of the rotary drums corresponding to the second station d, the third station e and the fourth station f are respectively provided with a fixed sealing baffle 105. The four chambers and the four stations have equal included angles of 90 degrees with the axis of the rotary cylinder 1 as the vertex of the angle. The four chambers are cyclically switched between the positions of the four stations. The detector also comprises 6 sample containers 8, wherein the sample containers 8 are respectively arranged in four chambers of the rotary drum 1.
The rotary drum 1 comprises a bottom platform 101, side wall plates 102, a top cover plate 103, an arc-shaped partition plate 104 positioned inside the rotary drum 1, and fixed closing baffles 105 arranged at the side walls of the rotary drum corresponding to the second station d, the third station e and the fourth station f. Wherein a stationary closure flap 105 is connected to the top cover plate 103. The 3 microwave generators 3 are respectively arranged on the rotary cylinder top cover plate 103 above the second station d, the third station e and the fourth station f. The first weighing means 3 are arranged in the lower part of the rotary drum bottom platform 101 below the first station c.
The detector also comprises a motor 6, wherein the motor 6 is arranged at the lower part of the bottom platform 101 of the rotary drum 1 and is used for driving the rotary drum 1 to rotate.
Example 2
Example 1 was repeated except that as in fig. 1, the apparatus further comprises a manipulator 7 provided outside the rotary drum 1, the manipulator 7 being for taking out materials and feeding the sample containers 8 filled with materials into the first station c and for taking out and discharging the sample containers 8 filled with materials from the first station c.
Example 3
Example 2 is repeated except that the meter further comprises a third weighing device 5 arranged below the third station e and below the rotary drum bottom platform 101.
Example 4
An absolute on-line moisture detection method using the absolute on-line moisture detector of example 2, comprising the steps of:
1) The second weighing device 4 weighs the unfilled sample container 8 (W 0 )；
2) A sample of a material to be detected is grabbed by a manipulator 7 and is sent into a sample container 8, and the manipulator 7 sends the loaded sample container 8 into a first station c;
3) The first weighing device 3 located below the first station c weighs the filled sample containers 8 (W 1 )；
4) After weighing, the sample container 8 is carried and driven by the rotary cylinder bottom platform 101 to sequentially pass through the second station d, the third station e and the fourth station f for microwave drying;
5) After the drying, the sample container 8 is rotated back to the first station c, and the first weighing device 3 weighs the dried sample container 8 (W 2 )；
6) According to formula (W 1 -W 2 )/(W 1 -W 0 ) Calculating the water content (%) of the gripped sample material;
7) The manipulator 7 takes out the sample container 8 from the first station c and discharges the sample container;
8) Repeating the steps 1-7 for 3 times, and calculating an average value through the data of the water content for 3 times, so as to detect and obtain the real water content of the material.
Example 5
An absolute on-line moisture detection method using the absolute on-line moisture detector of example 1, comprising the steps of:
1) The second weighing device 4 weighs the unfilled sample container 8 (W 0 )；
2) Manually grabbing a sample of a material to be detected, conveying the sample into a sample container 8, and conveying the loaded sample container 8 into a first station c;
3) The first weighing device 3 located below the first station c weighs the filled sample containers 8 (W 1 )；
4) After weighing, the sample container 8 is carried and driven by the rotary cylinder bottom platform 101 to sequentially pass through the second station d, the third station e and the fourth station f for microwave drying;
5) After the drying, the sample container 8 is rotated back to the first station c, and the first weighing device 3 weighs the dried sample container 8 (W 2 )；
6) According to formula (W 1 -W 2 )/(W 1 -W 0 ) Calculating the water content (%) of the gripped sample material;
7) Manually taking out the sample container 8 from the first station c and discharging;
8) Repeating the steps 1-7 for 3 times, and calculating an average value through the data of the water content for 3 times, so as to detect and obtain the real water content of the material.
Example 6
Example 4 was repeated except that in step 4) the third weighing device 5 weighed the sample holder 8 while the sample holder 8 was dried at the third station e, and if the weight did not change by 0.05g within 5 seconds, the sample material was considered to be completely dried.
Claims (10)
1. An absolute method online moisture detector comprises a rotary drum (1), a plurality of microwave generators (2) arranged at the top of the rotary drum (1), a first weighing device (3) arranged at the bottom of the rotary drum (1) and a second weighing device (4) arranged outside the rotary drum (1), wherein four side wall plates (102) are arranged at the peripheral edge of a bottom platform (101) of the rotary drum (1), side wall openings are reserved between adjacent side wall plates (102), the four rotary drum side wall openings are distributed on the periphery of the rotary drum (1) at equal intervals, and four chambers are arranged on the bottom platform (101) corresponding to the positions of the side wall openings, wherein a partition plate (104) positioned in the rotary drum (1) divides the inner space of the rotary drum (1) into four chambers, the distal ends of the partition plates (104) of the chambers are connected to the side wall (102) of the rotary drum at two sides of the opening of the side wall of the rotary drum, and the rotary drum (1) is provided with four stations: a first station (c), a second station (d), a third station (e) and a fourth station (f); wherein the positions corresponding to the second station (d), the third station (e) and the fourth station (f) and corresponding to the side wall openings when the rotary drum (1) stays at the stations are respectively provided with a fixed sealing baffle (105), and the four chambers are circularly switched between the positions of the four stations; the rotary drum (1) comprises a platform (101) at the bottom, a wall plate (102) at the side, a cover plate (103) at the top, a partition plate (104) positioned in the rotary drum (1) and a fixed sealing baffle (105) arranged at the side wall of the rotary drum corresponding to the second station (d), the third station (e) and the fourth station (f), wherein the fixed sealing baffle (105) is connected with the cover plate (103) at the top, a plurality of microwave generators (2) are respectively arranged on the cover plate (103) at the top of the rotary drum above the second station (d), the third station (e) and the fourth station (f), and a first weighing device (3) is arranged at the lower part of the rotary drum bottom platform (101) below the first station (c).
2. The moisture detector of claim 1, wherein: the detector also comprises a plurality of sample containers (8), wherein the sample containers (8) are respectively arranged in four chambers of the rotary drum (1); and/or
The microwave generator (2) is respectively arranged at the top of the rotary cylinder (1) above the second station (d), the third station (e) and the fourth station (f), and the first weighing device (3) is arranged at the bottom of the rotary cylinder (1) below the first station (c).
3. The moisture detector of claim 2, wherein: the detector also comprises a third weighing device (5) which is arranged below the third station (e) and is positioned at the lower part of the rotary drum bottom platform (101).
4. A moisture meter according to claim 3, wherein: the detector also comprises a motor (6), wherein the motor (6) is arranged at the lower part of the bottom platform (101) of the rotary drum (1) and is used for driving the rotary drum (1) to rotate.
5. The moisture detector as set forth in any one of claims 1 to 4, wherein: the four chambers or the four stations take the axle center of the rotary cylinder (1) as the vertex of the angle, and have equal included angles of 90 degrees.
6. The moisture detector of claim 4, wherein: the detector also comprises a manipulator (7) arranged outside the rotary cylinder (1), wherein the manipulator (7) is used for taking materials and conveying the sample container (8) filled with the materials into the first station (c) and is used for taking the sample container (8) filled with the materials out of the first station (c) and discharging the materials.
7. A method of moisture detection using the absolute on-line moisture detector of claim 6, the method comprising the steps of:
1) The weight (W) of the unfilled sample container (8) is weighed by the second weighing device (4) 0 )；
2) A mechanical arm (7) is adopted to grasp a sample of a material to be detected and send the sample into a sample container (8), the mechanical arm (7) sends the loaded sample container (8) into a first station (c), or the mechanical arm manually grasps the sample of the material to be detected and sends the loaded sample container (8) into the sample container (8) and sends the loaded sample container (8) into the first station (c);
3) The first weighing device (3) located below the first station (c) weighs the loaded sample containers (8) (W 1 )；
4) After weighing, the sample container (8) is carried and driven by a rotary cylinder bottom platform (101) to sequentially pass through a second station (d), a third station (e) and a fourth station (f) for microwave drying;
5) After the drying is finished, the sample container (8) rotates back to the first station (c), and the first weighing device (3) weighs the weight (W) of the dried sample container (8) 2 )；
6) According to formula (W 1 -W 2 )/(W 1 -W 0 ) Calculating the water content (%) of the gripped sample material;
7) The manipulator (7) takes out the sample container (8) from the first station (c) and discharges the sample, or takes out the sample container (8) from the first station (c) and discharges the sample manually.
8. The method according to claim 7, wherein: repeating the steps 1-7 for a plurality of times, and calculating an average value through the water content data for a plurality of times, so as to detect and obtain the real water content of the material.
9. The method according to claim 7 or 8, characterized in that: in the step 4), when the sample container (8) is dried at the third station (e), the third weighing device (5) weighs the sample container (8), and if the weight does not change by 0.05g within 2-10 seconds, the sample material is considered to be dried completely.
10. The method according to claim 9, wherein: in the step 4), when the sample container (8) is dried at the third station (e), the third weighing device (5) weighs the sample container (8), and if the weight does not change by 0.02g within 3-5 seconds, the sample material is considered to be dried completely.
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Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2522798A1 (en) * | 1982-03-04 | 1983-09-09 | Valeo | Multi-chamber industrial microwave drying installation - uses belt passing in stop motion through series of drying chambers each electromagnetically isolated from other by shutter |
| JPH051987A (en) * | 1991-06-26 | 1993-01-08 | Shimadzu Corp | Measurement device for moisture or volatile component |
| JPH0650665A (en) * | 1992-07-30 | 1994-02-25 | Kaneko Agricult Mach Co Ltd | Cereal dryer |
| RU2019066C1 (en) * | 1991-03-12 | 1994-08-30 | Удалов Валентин Николаевич | Installation for shf drying of multilayer ceramic moulds |
| JPH07180846A (en) * | 1993-12-22 | 1995-07-18 | Matsushita Electric Ind Co Ltd | Heating apparatus |
| JPH0742939U (en) * | 1993-12-29 | 1995-08-11 | 新日本無線株式会社 | Microwave dry solid concentration / moisture meter |
| JPH0829057A (en) * | 1994-07-14 | 1996-02-02 | Shionogi & Co Ltd | Tank moving fluidized drying device |
| WO1999061878A2 (en) * | 1998-05-27 | 1999-12-02 | Denver Instrument Company | A microwave moisture analyzer: apparatus and method |
| JP2000234992A (en) * | 1998-12-17 | 2000-08-29 | Kurita Water Ind Ltd | Sludge concentration moisture-measuring device |
| DE102007055488A1 (en) * | 2006-12-01 | 2008-06-05 | Püschner GmbH + Co. KG | Microwave-vacuum drying system for drying e.g. lumpy goods, has plastic drum with unsealed opening, which is selectively brought under inlet and outlet openings of vacuum container by rotation of drum |
| CN202304314U (en) * | 2011-09-30 | 2012-07-04 | 山东博润工业技术有限公司 | Turntable-type low-rank coal microwave quality improvement equipment |
| CN202661312U (en) * | 2012-06-26 | 2013-01-09 | 湖南三德科技发展有限公司 | Sample-preparation-purposed automatic air drying/balancing device with weighing function |
| CN105115852A (en) * | 2015-09-07 | 2015-12-02 | 东北煤田地质局沈阳测试研究中心 | Highest inherent moisture determining instrument and method for coal |
| CN105358244A (en) * | 2013-04-03 | 2016-02-24 | 格拉特工程技术有限公司 | Rotary dryer star and method for treating solid particles |
| JP2016145680A (en) * | 2015-02-09 | 2016-08-12 | 西光エンジニアリング株式会社 | Microwave/heater combined drying machine and drying method of dried object |
| CN205655607U (en) * | 2016-03-08 | 2016-10-19 | 宿迁市高烁复合材料有限公司 | A stoving case for producing high silica glass fiber mat |
| CN206074383U (en) * | 2016-07-01 | 2017-04-05 | 中冶长天国际工程有限责任公司 | A kind of mixing degree detection means of pellet feed |
| CN206132412U (en) * | 2016-10-12 | 2017-04-26 | 广东新宝电器股份有限公司 | Rotary electric kettle dry-heating water-boiling test equipment |
| CN206176900U (en) * | 2016-09-30 | 2017-05-17 | 河南艾柯泡塑有限公司 | Drying system is moulded to bubble |
| JP2017133792A (en) * | 2016-01-29 | 2017-08-03 | 井関農機株式会社 | Grain dryer |
| CN107063915A (en) * | 2016-12-31 | 2017-08-18 | 唐宇煊 | The mixture homogeneity detection means and its detection method of a kind of water-containing materials |
| CN107084905A (en) * | 2017-05-08 | 2017-08-22 | 王曙光 | Measure control method, device and the analyzer of moisture, ash content and volatile matter |
| CN207066917U (en) * | 2017-08-13 | 2018-03-02 | 唐宇煊 | Microwave drying detection means |
| CN207456998U (en) * | 2017-09-07 | 2018-06-05 | 中冶长天国际工程有限责任公司 | Absolute method online moisture detector |
| CN214276383U (en) * | 2020-09-17 | 2021-09-24 | 山东邦普机械设备有限公司 | Microwave rapid drying equipment for chemical raw materials |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7347007B2 (en) * | 2000-06-16 | 2008-03-25 | Maguire Stephen B | Low pressure high capacity dryer for resins and other granular and powdery materials |
| US7172729B2 (en) * | 2003-03-04 | 2007-02-06 | Jose Maria Las Navas Garcia | Mixed sample moisture or ash analyzer |
-
2017
- 2017-09-07 CN CN201710802029.5A patent/CN109470593B/en active Active
Patent Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2522798A1 (en) * | 1982-03-04 | 1983-09-09 | Valeo | Multi-chamber industrial microwave drying installation - uses belt passing in stop motion through series of drying chambers each electromagnetically isolated from other by shutter |
| RU2019066C1 (en) * | 1991-03-12 | 1994-08-30 | Удалов Валентин Николаевич | Installation for shf drying of multilayer ceramic moulds |
| JPH051987A (en) * | 1991-06-26 | 1993-01-08 | Shimadzu Corp | Measurement device for moisture or volatile component |
| JPH0650665A (en) * | 1992-07-30 | 1994-02-25 | Kaneko Agricult Mach Co Ltd | Cereal dryer |
| JPH07180846A (en) * | 1993-12-22 | 1995-07-18 | Matsushita Electric Ind Co Ltd | Heating apparatus |
| JPH0742939U (en) * | 1993-12-29 | 1995-08-11 | 新日本無線株式会社 | Microwave dry solid concentration / moisture meter |
| JPH0829057A (en) * | 1994-07-14 | 1996-02-02 | Shionogi & Co Ltd | Tank moving fluidized drying device |
| WO1999061878A2 (en) * | 1998-05-27 | 1999-12-02 | Denver Instrument Company | A microwave moisture analyzer: apparatus and method |
| JP2000234992A (en) * | 1998-12-17 | 2000-08-29 | Kurita Water Ind Ltd | Sludge concentration moisture-measuring device |
| DE102007055488A1 (en) * | 2006-12-01 | 2008-06-05 | Püschner GmbH + Co. KG | Microwave-vacuum drying system for drying e.g. lumpy goods, has plastic drum with unsealed opening, which is selectively brought under inlet and outlet openings of vacuum container by rotation of drum |
| CN202304314U (en) * | 2011-09-30 | 2012-07-04 | 山东博润工业技术有限公司 | Turntable-type low-rank coal microwave quality improvement equipment |
| CN202661312U (en) * | 2012-06-26 | 2013-01-09 | 湖南三德科技发展有限公司 | Sample-preparation-purposed automatic air drying/balancing device with weighing function |
| CN105358244A (en) * | 2013-04-03 | 2016-02-24 | 格拉特工程技术有限公司 | Rotary dryer star and method for treating solid particles |
| JP2016145680A (en) * | 2015-02-09 | 2016-08-12 | 西光エンジニアリング株式会社 | Microwave/heater combined drying machine and drying method of dried object |
| CN105115852A (en) * | 2015-09-07 | 2015-12-02 | 东北煤田地质局沈阳测试研究中心 | Highest inherent moisture determining instrument and method for coal |
| JP2017133792A (en) * | 2016-01-29 | 2017-08-03 | 井関農機株式会社 | Grain dryer |
| CN205655607U (en) * | 2016-03-08 | 2016-10-19 | 宿迁市高烁复合材料有限公司 | A stoving case for producing high silica glass fiber mat |
| CN206074383U (en) * | 2016-07-01 | 2017-04-05 | 中冶长天国际工程有限责任公司 | A kind of mixing degree detection means of pellet feed |
| CN206176900U (en) * | 2016-09-30 | 2017-05-17 | 河南艾柯泡塑有限公司 | Drying system is moulded to bubble |
| CN206132412U (en) * | 2016-10-12 | 2017-04-26 | 广东新宝电器股份有限公司 | Rotary electric kettle dry-heating water-boiling test equipment |
| CN107063915A (en) * | 2016-12-31 | 2017-08-18 | 唐宇煊 | The mixture homogeneity detection means and its detection method of a kind of water-containing materials |
| CN107084905A (en) * | 2017-05-08 | 2017-08-22 | 王曙光 | Measure control method, device and the analyzer of moisture, ash content and volatile matter |
| CN207066917U (en) * | 2017-08-13 | 2018-03-02 | 唐宇煊 | Microwave drying detection means |
| CN207456998U (en) * | 2017-09-07 | 2018-06-05 | 中冶长天国际工程有限责任公司 | Absolute method online moisture detector |
| CN214276383U (en) * | 2020-09-17 | 2021-09-24 | 山东邦普机械设备有限公司 | Microwave rapid drying equipment for chemical raw materials |
Non-Patent Citations (7)
| Title |
|---|
| Experimental study of paddy drying in a vortex chamber;Jnyana Ranjan Pati 等;《Drying Technology》;20160531;1073-1084 * |
| EXPERIMENTAL STUDY ON DRYING OF CHILLI IN A COMBINED MICROWAVE-VACUUM-ROTARY DRUM DRYER;Weerachai Kaensup 等;《Drying Technology》;20070206;2067-2079 * |
| How to make a microwave vacuum dryer with turntable;Ricardo Lemos Monteiro 等;《Journal of Food Engineering》;20150622;276-284 * |
| 上海科学技术情报研究所.《热工专利文摘》.上海科学技术文献出版社,1980,196. * |
| 微波加热在干燥过程中的研究现状;廖雪峰 等;《矿产综合利用》;20160901;1-5 * |
| 谷物干燥新技术及推广应用前景;叶新跃;《湖北农机化》;19990420;25 * |
| 铁矿物料微波干燥测水试验研究;胡兵 等;《真空电子技术》;20181225;70-74 * |
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