CN109470592B - Online moisture detection system and detection method thereof - Google Patents
Online moisture detection system and detection method thereof Download PDFInfo
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- CN109470592B CN109470592B CN201710802026.1A CN201710802026A CN109470592B CN 109470592 B CN109470592 B CN 109470592B CN 201710802026 A CN201710802026 A CN 201710802026A CN 109470592 B CN109470592 B CN 109470592B
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- 238000001514 detection method Methods 0.000 title claims abstract description 71
- 239000000463 material Substances 0.000 claims abstract description 60
- 238000001035 drying Methods 0.000 claims abstract description 55
- 238000004458 analytical method Methods 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000000523 sample Substances 0.000 claims description 164
- 238000005303 weighing Methods 0.000 claims description 128
- 238000007599 discharging Methods 0.000 claims description 67
- 238000005070 sampling Methods 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 32
- 238000005259 measurement Methods 0.000 claims description 10
- 238000004064 recycling Methods 0.000 claims 2
- 238000007790 scraping Methods 0.000 claims 1
- 238000011000 absolute method Methods 0.000 abstract description 25
- 238000011084 recovery Methods 0.000 description 18
- 238000005192 partition Methods 0.000 description 11
- 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
- 239000000203 mixture Substances 0.000 description 3
- 238000012935 Averaging 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
- 238000012360 testing method Methods 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
- 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
- 230000002093 peripheral effect Effects 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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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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Abstract
An absolute method on-line moisture detection system comprises a box body, an analysis and discharge device positioned at one side of the interior of the box body and an operation drying device positioned at the other side of the interior of the box body, wherein the analysis and discharge device is provided with a handle which is rotatable along a central shaft in the horizontal direction, and at least two stations are arranged: feed and weigh and discharge levels; the operation drying device is provided with a rotary table, four chambers arranged on the rotary table, a top cover positioned on the upper parts of the four chambers, and a microwave generator arranged on the top cover, and also provided with four stations: the operation drying device is characterized in that openings are formed in the upper parts of the edges of the turntables corresponding to the four chambers, and fixed sealing baffles are respectively arranged on the upper parts of the edges of the turntables corresponding to the second station, the third station and the fourth station. 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 detection system (or detector) of mixed materials and a detection method thereof, belonging to the field of raw material preparation in metallurgical sintering and pellet industries.
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 water detection system and a detection method thereof, wherein the water detection system has simple theoretical principle and can detect on line in real time.
According to a first embodiment provided by the present invention, there is provided an absolute method on-line moisture detection system (or referred to as an on-line moisture detector):
an absolute method on-line moisture detection system (or detector) comprises a box body, an analysis and discharge device positioned at one side (for example, the left side) in the box body and an operation drying device positioned at the other side (for example, the right side) in the box body. Wherein the analyzing and discharging device has a grip and the grip is rotatable in a horizontal direction along a central axis (e.g. along a rotation mechanism), and further has at least two stations: feed and weigh and discharge levels. The operation drying device is provided with a rotary table, four chambers arranged on the rotary table, a top cover positioned on the upper parts of the four chambers, a plurality of microwave generators arranged on the top cover, and four stations: the first station is close to the analyzing and discharging device, and the second station, the third station and the fourth station are sequentially arranged in the anticlockwise direction. The operation drying device is also provided with openings at the upper parts of the chambers which are corresponding to the four chambers and are close to the edge of the turntable. The upper parts of the edges of the turntables corresponding to the second station, the third station and the fourth station are respectively provided with a fixed sealing baffle. Wherein the four chambers are cyclically switched between the positions of the four stations.
Preferably, four side wall panels are provided (or erected) at the peripheral edge of the turntable, with side wall openings left between adjacent side wall panels, for a total of four side wall openings. The four side wall openings are distributed on the periphery of the rotary drum at equal angles or equal intervals, correspond to the positions of the side wall openings, four chambers are arranged on the rotary table and are surrounded by (arc-shaped) partition plates, and the distal ends of the (arc-shaped) partition plates of the chambers are connected to the side wall plates on two sides of the side wall openings. The carousel has four stations (thus in a counter-clockwise direction): 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.
In the present invention, the analysis and discharge apparatus is provided with a feed hopper located above the feed level and mounted on the top of the tank (or on the top deck).
In the invention, the analysis and discharge device comprises a sample container, a measuring platform, a first weighing device, a grip driver, a rotating mechanism, a vacuum tube, a vacuum pump and a discharge tube. Wherein the measuring platform is located below the feed level and the weighing and discharge level. The sample container is supported by the measuring platform. The first weighing device is located in the lower portion of the measuring platform and located below the weighing and discharging level. The gripper driver is installed at the upper part of the rotating mechanism. The gripper is mounted at the protruding front end of the gripper actuator moving shaft. The front port of the vacuum tube is positioned above the weighing and discharging positions, the rear port of the vacuum tube is connected with the vacuum pump, and the other end of the vacuum pump is connected with the discharging tube. Preferably, the vacuum tube is arranged at the top of the box (or on the top cover plate) and its front port is positioned above the weighing and discharging level, and the rear port of the vacuum tube positioned outside the box is connected with the vacuum pump.
Preferably, the measuring platform, the first weighing device and the rotation mechanism are each fixed directly or indirectly to the bottom inside the housing.
In the present invention, the operation drying device includes a turntable, a motor driving the turntable to rotate, four chambers provided on the turntable, a top cover positioned on the four chambers, and a plurality of microwave generators provided on the top cover. Wherein the motor sets up in the bottom of carousel, and a plurality of microwave generator set up respectively on the top cap of second station, third station and fourth station top and pass the top (or top apron) of box.
Preferably, a side wall plate is also provided at the upper part of the rim of the turntable. Four openings are provided at the side wall plates corresponding to the four chambers. The upper parts of the edges of the turntables corresponding to the second station, the third station and the fourth station are respectively provided with a fixed sealing baffle. The fixed closing baffle is connected with the top cover.
Preferably, the motor is directly or indirectly fixed to the bottom inside the casing.
Preferably, the operation drying device further comprises a second weighing device arranged below the third station and positioned at the lower part of the turntable.
Preferably, the second weighing means is fixed directly or indirectly to the bottom inside the tank.
Preferably, the gripper of the analysis and discharge device may retract or extend the front half thereof. That is, the front half of the gripper may be extended or retracted when the gripper reaches a different station. Preferably, the sample holder is grasped by lifting the gripper and released by lowering the gripper.
Preferably, the four chambers or the four stations of the running drying device have equal included angles of 90 degrees with the axis of the turntable as the vertex of the angle.
In the operation process of the absolute method online moisture detection system, samples can be input from a feeding funnel through manual sampling.
Preferably, the sample is automatically input from the feed hopper using a sampling system. Therefore, preferably, the above detection system further comprises a sampling device or a sampling system, the sampling system is disposed at the upper portion of the box and above the analyzing and discharging device, and the sampling system conveys the sample to the analyzing and discharging device through the feeding funnel. More specifically, the sampling system delivers samples through a feed hopper to sample receptacles of the analysis and discharge apparatus at a feed level.
Preferably, the sampling system includes a feed plate, a feed plate drive, and a take out baffle. The feed plate driver is arranged above the box body. The feed plate is mounted to the extended front end of the feed plate drive motion shaft. The take-out baffle is mounted above the tank and above the recovery location (or recovery end location) of the feed plate. Preferably, the feed hopper is mounted (e.g., mounted) on the top cover plate of the tank below the recovery location (or recovery end location) of the feed plate.
Four side wall plates are arranged at the edge of the turntable, wall plate openings are reserved between adjacent side wall plates, and the four wall plate openings are all arranged. The four wall plate openings are distributed at equal angles or equal intervals on the periphery of the turntable. Four chambers are arranged on the rotary table corresponding to the positions of the openings of the wall plates. Each of the four chambers is surrounded by a (arcuate) baffle provided on the turntable and the distal ends of the (arcuate) baffles are connected to the turntable side wall panels on either side of the wall panel opening. Accordingly, the distal side of the chamber likewise has a chamber opening. I.e. the wall opening is also the opening of the chamber. Distal or distal as used herein refers to the outside of the central axis of the turret (i.e., the rotational axis). The filled (or sample) sample containers are fed (e.g., with a mechanical gripper) to the first station via the wall opening or the chamber opening. 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 wall plate opening or the chamber opening. That is, the closure flap and the (dome) partition enclose an independent chamber. Thus, the stationary closure flap is also referred to as a stationary closure flap. More specifically, when a chamber having an opening surrounded by a (arcuate) partition rotates with a rotary disc to a corresponding station (i.e., a second, third or fourth station), the opening is closed by a closing flap, and at this time, a closed chamber is surrounded by the partition, the bottom of the chamber (which is part of the rotary disc), 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 partition plate to allow the turntable to freely rotate.
According to a second embodiment of the present invention, there is provided an absolute method on-line moisture detection method:
an absolute method on-line moisture detection method or a method for moisture detection using the above-mentioned absolute method on-line moisture detection system (or detector), the method comprising the steps of:
1) The first weighing device located below the weighing and discharging level weighs the discharged sample container (W 0 )；
2) The gripper grasps the sample container by lifting, rotates the sample container from weighing and discharging positions to feeding positions, loosens the sample container by descending, places the sample container on the measuring platform, and drives the feeding plate to be recovered by a moving shaft of a feeding plate driver after receiving materials from a belt blanking position of the belt conveyor, the material taking baffle scrapes materials of the feeding plate, the sample materials flow into the sample container along with the feeding funnel, or the sample materials are manually sampled and input into the sample container from the feeding funnel;
3) The hand grip grips the sample container and rotates the sample container from the feeding position to the weighing and discharging position, the hand grip releases the sample container, and the first weighing device weighs the loaded sample container (W 1 )；
4) After weighing, the hand grip rotates the sample container from the weighing and discharging position to the first station, the sample container sequentially passes through the second station, the third station and the fourth station for microwave drying under the bearing and driving of the turntable, and after drying, the sample container rotates back to the first station;
5) The hand grip rotates the sample container from the first station to the weighing and discharging position, 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 vacuum pump is started to discharge the dry materials in the sample container through the discharge pipe (for example, the dry materials are discharged onto a belt).
Preferably, in step 4), the second 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.
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.
According to a third embodiment of the present invention, there is provided an absolute on-line moisture detection system or meter:
an absolute method on-line moisture detection system or detector comprises a box body, an analysis and discharge device positioned at one side (for example, the left side) in the box body, an operation drying device positioned at the other side (for example, the right side) in the box body, and a sampling system positioned above the analysis and discharge device. Wherein the analyzing and discharging device has a grip and the grip is rotatable in a horizontal direction along a central axis (e.g. along a rotation mechanism), and further has at least two stations: feed and weigh and discharge levels. The operation drying device is provided with a rotary table, four chambers arranged on the rotary table, a top cover positioned on the upper parts of the four chambers, a plurality of microwave generators arranged on the top cover, and four stations: the first station is close to the analyzing and discharging device, and the second station, the third station and the fourth station are sequentially arranged in the anticlockwise direction. The operation drying device is also provided with openings at the upper parts of the edges of the turntables corresponding to the four chambers. The upper parts of the edges of the turntables corresponding to the second station, the third station and the fourth station are respectively provided with a fixed sealing baffle. Wherein the four chambers are cyclically switched between the positions of the four stations.
In the present invention, the analysis and discharge apparatus is provided with a feed hopper located above the feed level and mounted on the top of the tank (or on the top deck). The sampling system is communicated with the analyzing and discharging device through a feeding funnel.
In the invention, the analysis and discharge device comprises a sample container, a measuring platform, a first weighing device, a grip driver, a rotating mechanism, a vacuum tube, a vacuum pump and a discharge tube. Wherein the measuring platform is located below the feed level and the weighing and discharge level. The sample container is supported by the measuring platform. The first weighing device is located in the lower portion of the measuring platform and located below the weighing and discharging level. The gripper driver is installed at the upper part of the rotating mechanism. The gripper is mounted at the protruding front end of the gripper actuator moving shaft. The front port of the vacuum tube is positioned above the weighing and discharging positions, the rear port of the vacuum tube is connected with the vacuum pump, and the other end of the vacuum pump is connected with the discharging tube. Preferably, the vacuum tube is arranged at the top of the box (or on the top cover plate) and its front port is positioned above the weighing and discharging level, and the rear port of the vacuum tube positioned outside the box is connected with the vacuum pump.
Preferably, the measuring platform, the first weighing device and the rotation mechanism are each fixed directly or indirectly to the bottom inside the housing.
In the present invention, the operation drying device includes a turntable, a motor driving the turntable to rotate, four chambers provided on the turntable, a top cover positioned on the four chambers, and a plurality of microwave generators provided on the top cover. Wherein the motor sets up in the bottom of carousel, and a plurality of microwave generator set up respectively on the top cap of second station, third station and fourth station top and pass the top (or top apron) of box.
Preferably, a side wall plate is also provided at the upper part of the rim of the turntable. Four openings are provided at the side wall plates corresponding to the four chambers. The upper parts of the edges of the turntables corresponding to the second station, the third station and the fourth station are respectively provided with a fixed sealing baffle. The fixed closing baffle is connected with the top cover.
Preferably, the motor is directly or indirectly fixed to the bottom inside the casing.
Preferably, the operation drying device further comprises a second weighing device arranged below the third station and positioned at the lower part of the turntable.
Preferably, the second weighing means is fixed directly or indirectly to the bottom inside the tank.
Preferably, the gripper of the analysis and discharge device may retract or extend the front half thereof. That is, the front half of the gripper may be extended or retracted when the gripper reaches a different station. Preferably, the sample holder is grasped by lifting the gripper and released by lowering the gripper.
Preferably, the four chambers or the four stations of the running drying device have equal included angles of 90 degrees with the axis of the turntable as the vertex of the angle.
In the operation process of the absolute method online moisture detection system, samples can be input from a feeding funnel through manual sampling.
Preferably, the sample is automatically input from the feed hopper using a sampling system. The sampling system is arranged at the upper part of the box body and is positioned above the analysis and discharge device, and the sampling system conveys samples to the analysis and discharge device through the feeding funnel. More specifically, the sampling system delivers samples through a feed hopper to sample receptacles of the analysis and discharge apparatus at a feed level.
Generally, the sampling system includes a feed plate, a feed plate drive, and a take out baffle. The feed plate driver is arranged above the box body. The feed plate is mounted to the extended front end of the feed plate drive motion shaft. The take-out baffle is mounted above the tank and above the recovery location (or recovery end location) of the feed plate. Preferably, the feed hopper is mounted (e.g., mounted) on the top cover plate of the tank below the recovery location (or recovery end location) of the feed plate.
In the present invention, the operation drying device has four stations: the first station, the second station, the third station and the fourth station. Meanwhile, the turntable of the running drying device is also divided into four chambers by an (arc-shaped) partition board. 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 axes of the turnplate as the vertexes of angles, the angles of the four stations are equal to each other by 90 degrees, the positions of the four chambers are changed along with the rotation of the turnplate, but the angles of the four chambers are also 90 degrees along with the vertexes of the angles of the axes of the turnplate, so that in the process that the chambers rotate along with the turnplate, one chamber is continuously matched (or overlapped) with the positions of each station, and the other three chambers are also the same.
In addition, the operation drying device is also provided with side wall plates at the upper part of the edge of the turntable, and four openings are arranged at the side wall plates 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 upper parts of the edges of the turntables corresponding to the second station, the third station and the fourth station are provided with fixed closing baffles. Because the first station is a sample container inlet and outlet station of the drying device, a fixed sealing baffle is not arranged at the first station. The fixed sealing baffle is connected with the upper top cover, namely the fixed sealing baffle and the top cover do not rotate along with the rotation of the turntable, 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 invention, the rotating mechanism drives the handle to rotate, and the handle moves along the axis of the rotating mechanism in the circumferential direction. Meanwhile, the gripper is driven by the gripper driver moving shaft to do telescopic motion along the axial direction of the gripper driver moving shaft. In addition, the sample container can be gripped by lifting the grip, and can be released by lowering the grip. Therefore, the gripper can accurately grasp and loosen the sample container.
In the invention, the first weighing device and the second weighing device are electronic sensors or electronic balances. The first weighing device and the second weighing device can execute up-and-down movement of the device. 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. Namely, the first weighing device is lifted up by the lifting device, so that the sample container is supported by the first weighing device (namely, the sample container is supported by the lifting device and temporarily separated from the measuring platform) so as to be weighed, and after weighing, the lifting device descends, and the sample container is placed on the measuring platform again (namely, is supported by the measuring platform); or, the second weighing device is lifted by the lifting device, so that the sample container is supported by the second weighing device (namely, the sample container is supported by the lifting device and temporarily separated from the turntable) so as to be weighed, and after weighing, the lifting device descends, and the sample container is placed on the turntable again (namely, is supported by the turntable). 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 turntable of the running drying device is provided with a supporting table besides the driving motor and the second weighing device, and the supporting table is fixed at the bottom in the box body and used for supporting the turntable to be in a horizontal state.
In this application, there is no particular requirement for the sample container. 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.
Preferably, at least 4 casters or rollers are arranged at the bottom of the box body of the absolute method on-line moisture detection system or detector, so that the system is convenient to move or carry.
In this application, the diameter of the turntable is 0.5m-2.5m, preferably 0.7m-1.8m, more preferably 0.8m-1.5m. The height of the side wall plate of the turntable is 12cm-120cm, preferably 14cm-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 materials in a very short time, so that the absolute method online moisture detection system or detector can detect the real moisture content of the mixed materials in a very short time, and real-time online detection can be realized even if the types of the materials change frequently;
2. The absolute method on-line moisture detection system or detector has smaller size, is convenient to transport and install, and does not need large-scale carrying equipment for maintenance.
3. The driving power is low, and the energy consumption is low.
The absolute method online moisture detection system 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 detection system can be combined with a vertical intensive mixer for processing pellet process raw materials in the metallurgical industry to realize the intellectualization of the 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 perspective view of an absolute on-line moisture detection system (or detector) of the present invention;
FIG. 2 is a perspective view II of an absolute on-line moisture detection system (or detector) of the present invention;
fig. 3 is an internal structural view of the operation drying device of the present invention.
Reference numerals: 1: a case; 2: an analysis and discharge device; 201: a sample container; 202: a measurement platform; 203: a first weighing device; 204: a grip; 205: a gripper driver; 206: a rotation mechanism; 207: a vacuum tube; 208: a vacuum pump; 209: a discharge pipe; 3: operating the drying device; 301: a turntable; 302: a motor; 303: a top cover; 304: a microwave generator; 305: a turntable side wall plate; 305a: a chamber (arc) partition; 306: fixing a closed baffle; 307: a second weighing device; 4: a feed hopper; 5: a sampling system; 501: a feed plate; 502: a feed plate driver; 503: a material taking baffle;
a: a material feeding level; b: weighing and discharging the material level; c: a first station; d: a second station; e: a third station; f: and a fourth station.
Detailed Description
According to a first embodiment provided by the present invention, there is provided an absolute method on-line moisture detection system (or referred to as an on-line moisture detector):
an absolute method on-line moisture detection system comprises a box body 1, an analysis and discharge device 2 positioned at one side (for example, the left side) inside the box body 1, and an operation drying device 3 positioned at the other side (for example, the right side) inside the box body 1. Wherein the analysis and discharge device 2 has a gripper 204 and the gripper 204 is rotatable in a horizontal direction along a central axis (e.g. along a rotation mechanism 206), and further has at least two stations: a feed level a and a weighing and discharge level b. The operation drying device 3 has a turntable 301, four chambers provided on the turntable 301, a top cover 303 provided on an upper portion of the four chambers, and a plurality of microwave generators 304 provided on the top cover 303, and also has four stations: the first station c adjacent to the analysing and discharging device 2, the second station d, the third station e and the fourth station f thus being arranged in a counter-clockwise direction in sequence. The operation drying device is also provided with openings at the upper parts of the edges of the turntable 301 corresponding to the four chambers. Fixed closing baffles 306 are respectively arranged on the upper parts of the edges of the turntable 301 corresponding to the second station d, the third station e and the fourth station f. Wherein the four chambers are cyclically switched between the positions of the four stations.
In the present invention, the analysis and discharge device 2 is provided with a feed hopper 4 located above the feed level a and mounted on top of the tank 1 (or on the top cover plate).
In the present invention, the analyzing and discharging device 2 includes a sample container 201, a measuring platform 202, a first weighing device 203, a gripper 204, a gripper driver 205, a rotating mechanism 206, a vacuum tube 207, a vacuum pump 208, and a discharging tube 209. Wherein the measuring platform 202 is located below the feed level a and the weighing and discharging level b. The sample holder 201 is supported by the measurement platform 202. The first weighing device 203 is located in the lower part of the measuring platform 202 and the first weighing device 203 is located below the weighing and discharging level b. The grip driver 205 is installed at an upper portion of the rotation mechanism 206. The grip 204 is mounted on the protruding front end of the movable shaft of the grip driver 205. The front port of the vacuum tube 207 is located above the weighing and discharging level b, the rear port of the vacuum tube 207 is connected to a vacuum pump 208, and the other end of the vacuum pump 208 is connected to a discharging tube 209. Preferably, the vacuum tube 207 is arranged on top of the tank 1 (or on the top cover plate) and its front port is located above the weighing and draining level b, and the rear port of the vacuum tube 207 located outside the tank 1 is connected to a vacuum pump 208.
Preferably, the measuring platform 202, the first weighing device 203 and the rotation mechanism 206 are fixed directly or indirectly to the bottom inside the case 1, respectively.
In the present invention, the operation drying device 3 includes a turntable 301, a motor 302 driving the turntable to rotate, four chambers provided on the turntable 301, a top cover 303 provided on the four chambers, and a plurality of microwave generators 304 provided on the top cover 303. Wherein the motor 302 is disposed at the bottom of the turntable 301, and a plurality of microwave generators 304 are disposed on the top cover 303 above the second, third and fourth stations d, e and f, respectively, and pass through the top (or top cover) of the cabinet 1.
Preferably, a side wall plate 305 is also provided at the upper part of the rim of the turntable 301. Four openings are provided at the side wall panels 305 corresponding to the four chambers. Fixed closing baffles 306 are respectively arranged on the upper parts of the edges of the turntable 301 corresponding to the second station d, the third station e and the fourth station f. A stationary closure flap 306 is connected to the top cover 303.
Preferably, the motor 302 is directly or indirectly fixed to the bottom inside the case 1.
Preferably, said running drying means 3 further comprise second weighing means 307 arranged below the third station e and in the lower part of turntable 301.
Preferably, the second weighing means 307 is fixed directly or indirectly to the bottom inside the tank 1.
Preferably, the gripper 204 of the analysis and discharge device 2 may retract or extend the front half thereof. That is, the front half of the gripper may be extended or retracted when the gripper reaches a different station. Preferably, the sample holder 201 is grasped by lifting the grip 204, and the sample holder 201 is released by lowering the grip 204.
Preferably, the four chambers or stations of the operation drying device 3 have equal angles of 90 ° with respect to each other by using the axis of the turntable 301 as the vertex of the angle.
The absolute on-line moisture detection system described above may be operated by manually sampling a sample from the feed hopper 4.
Preferably, the sample is automatically fed from the feed hopper 4 using the sampling system 5. Therefore, preferably, the above detection system further comprises a sampling system 5 (or sampling device 5), wherein the sampling system 5 is disposed at the upper portion of the box 1 and above the analysis and discharge device 2, and the sampling system 5 delivers the sample to the analysis and discharge device 2 through the feeding funnel 4. More specifically, the sampling system 5 delivers samples through the feed hopper 4 to the sample holding container 201 of the analysis and discharge device 2 at the feed level a.
Preferably, the sampling system 5 includes a feed plate 501, a feed plate driver 502, and a take out baffle 503. A feed plate driver 502 is provided above the case 1. The feed plate 501 is mounted to the extended front end of the moving shaft of the feed plate driver 502. The take-out shutter 503 is installed above the case 1 and above the recovery position (or recovery end position) of the feed plate 501. Preferably, the feed hopper 4 is mounted (e.g., inlaid) on the top cover plate of the tank 1 and below the recovery location (or recovery end location) of the feed plate 501.
Four side wall panels 305 are provided at the edge of the turntable 301, with wall panel openings between adjacent side wall panels 305, for a total of four wall panel openings. The four wall plate openings are equally angularly or equally spaced around the periphery of turntable 301. Four chambers are arranged on the rotary table corresponding to the positions of the openings of the wall plates. Each of the four chambers is surrounded by a (arcuate) baffle 305a provided on the turntable and the distal ends of the (arcuate) baffles 305a are connected to the turntable side wall panels 305 on either side of the wall panel opening. Accordingly, the distal side of the chamber likewise has a chamber opening. I.e. the wall opening is also the opening of the chamber. Distal or distal as used herein refers to the outside of the central axis of the turret (i.e., the rotational axis). The filled (or sample) sample holder 201 is fed (e.g. by means of a mechanical gripper) via the wall opening or the chamber opening into the first station c. At the end of the four-station operation, the unloaded sample holder 201 is removed (e.g., with a robotic gripper) from the first station c via the wall opening or the chamber opening.
Typically, a stationary closure flap 306 is secured to the lower surface of the top cover plate 303. The closure flap 306 is used to close the wall opening or the chamber opening. That is, the closing baffle 306 encloses a separate chamber with the (dome) partition 305 a. Thus, the fixed closure flap 306 is also referred to as a fixed closure flap. More specifically, when the chamber having the opening surrounded by the (arc-shaped) partition 305a rotates to the corresponding station (i.e., the second, third or fourth station) with the rotary disk 301, the opening is closed by the closing flap 306, and at this time, the closed chamber is surrounded by the partition 305a, the bottom of the chamber (which is a part of the rotary disk), the cover plate 303 and the closing flap 306. Of course, there is a gap between the lower surface of cover plate 303 and the top of spacer 305a to allow turntable 301 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 the sample container 201.
According to a second embodiment of the present invention, there is provided an absolute method on-line moisture detection method:
an absolute method on-line moisture detection method or a method for moisture detection using the above-mentioned absolute method on-line moisture detection system (or detector), the method comprising the steps of:
1) The first weighing device 203 located below the weighing and discharging level b weighs the discharged sample container 201 (W 0 )；
2) The hand grip 204 grasps the sample container 201 by lifting, rotates the sample container 201 from the weighing and discharging position b to the feeding position a, loosens the sample container 201 by descending, places the sample container 201 on the measuring platform 202, and after receiving materials from the belt blanking position of the belt conveyor, the feeding plate 501 is driven by the moving shaft of the feeding plate driver 502 to be recovered, the material of the feeding plate 501 is scraped by the material taking baffle 503, and sample materials flow into the sample container 201 along with the feeding funnel 4, or sample materials are manually sampled and input into the sample container 201 from the feeding funnel 4;
3) The hand grip 204 grips the sample container 201 to rotate the sample container 201 from the feeding position a to the weighing and discharging position b, the hand grip 204 releases the sample container 201, and the first weighing device 203 weighs the charged sample container 201 (W 1 )；
4) After weighing, the hand grip 204 rotates the sample container 201 from the weighing and discharging position b to the first station c, the sample container 201 sequentially passes through the second station d, the third station e and the fourth station f to be dried by microwaves under the bearing and driving of the turntable 301, and after drying, the sample container 201 rotates back to the first station c;
5) The hand grip 204 rotates the sample container 201 from the first station c to the weighing and discharging position b, and the first weighing device 203 weighs the dried sample container 201 (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 vacuum pump 208 is turned on to discharge the dry material in the sample container 201 through the discharge pipe 209 (for example, onto a belt).
Preferably, in step 4), the second weighing means 307 weigh the sample holder 201 while the sample holder 201 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.
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.
According to a third embodiment provided by the present invention, there is provided an absolute method on-line moisture detection system (or detector):
an absolute method on-line moisture detection system (or detector) comprises a box body 1, an analysis and discharge device 2 positioned on one side (for example, the left side) inside the box body 1, an operation drying device 3 positioned on the other side (for example, the right side) inside the box body 1, and a sampling system 5 positioned above the analysis and discharge device 2. Wherein the analysis and discharge device 2 has a gripper 204 and the gripper 204 is rotatable in a horizontal direction along a central axis (e.g. along a rotation mechanism 206), and further has at least two stations: a feed level a and a weighing and discharge level b. The operation drying device 3 has a turntable 301, four chambers provided on the turntable 301, a top cover 303 provided on an upper portion of the four chambers, and a plurality of microwave generators 304 provided on the top cover 303, and also has four stations: the first station c adjacent to the analysing and discharging device 2, the second station d, the third station e and the fourth station f thus being arranged in a counter-clockwise direction in sequence. The operation drying device is also provided with openings at the upper parts of the edges of the turntable 301 corresponding to the four chambers. Fixed closing baffles 306 are respectively arranged on the upper parts of the edges of the turntable 301 corresponding to the second station d, the third station e and the fourth station f. Wherein the four chambers are cyclically switched between the positions of the four stations.
In the present invention, the analysis and discharge device 2 is provided with a feed hopper 4 located above the feed level a and mounted on top of the tank 1 (or on the top cover plate). The sampling system 5 communicates with the analysis and discharge device 2 via a feed hopper 4.
In the present invention, the analyzing and discharging device 2 includes a sample container 201, a measuring platform 202, a first weighing device 203, a gripper 204, a gripper driver 205, a rotating mechanism 206, a vacuum tube 207, a vacuum pump 208, and a discharging tube 209. Wherein the measuring platform 202 is located below the feed level a and the weighing and discharging level b. The sample holder 201 is supported by the measurement platform 202. The first weighing device 203 is located in the lower part of the measuring platform 202 and the first weighing device 203 is located below the weighing and discharging level b. The grip driver 205 is installed at an upper portion of the rotation mechanism 206. The grip 204 is mounted on the protruding front end of the movable shaft of the grip driver 205. The front port of the vacuum tube 207 is located above the weighing and discharging level b, the rear port of the vacuum tube 207 is connected to a vacuum pump 208, and the other end of the vacuum pump 208 is connected to a discharging tube 209. Preferably, the vacuum tube 207 is arranged on top of the tank 1 (or on the top cover plate) and its front port is located above the weighing and draining level b, and the rear port of the vacuum tube 207 located outside the tank 1 is connected to a vacuum pump 208.
Preferably, the measuring platform 202, the first weighing device 203 and the rotation mechanism 206 are fixed directly or indirectly to the bottom inside the case 1, respectively.
In the present invention, the operation drying device 3 includes a turntable 301, a motor 302 driving the turntable to rotate, four chambers provided on the turntable 301, a top cover 303 provided on the four chambers, and a plurality of microwave generators 304 provided on the top cover 303. Wherein the motor 302 is disposed at the bottom of the turntable 301, and a plurality of microwave generators 304 are disposed on the top cover 303 above the second, third and fourth stations d, e and f, respectively, and pass through the top (or top cover) of the cabinet 1.
Preferably, a side wall plate 305 is also provided at the upper part of the rim of the turntable 301. Four openings are provided at the side wall panels 305 corresponding to the four chambers. Fixed closing baffles 306 are respectively arranged on the upper parts of the edges of the turntable 301 corresponding to the second station d, the third station e and the fourth station f. A stationary closure flap 306 is connected to the top cover 303.
Preferably, the motor 302 is directly or indirectly fixed to the bottom inside the case 1.
Preferably, said running drying means 3 further comprise second weighing means 307 arranged below the third station e and in the lower part of turntable 301.
Preferably, the second weighing means 307 is fixed directly or indirectly to the bottom inside the tank 1.
Preferably, the gripper 204 of the analysis and discharge device 2 may retract or extend the front half thereof. That is, the front half of the gripper may be extended or retracted when the gripper reaches a different station. Preferably, the sample holder 201 is grasped by lifting the grip 204, and the sample holder 201 is released by lowering the grip 204.
Preferably, the four chambers or stations of the operation drying device 3 have equal angles of 90 ° with respect to each other by using the axis of the turntable 301 as the vertex of the angle.
The absolute on-line moisture detection system described above may be operated by manually sampling a sample from the feed hopper 4.
Preferably, the sample is automatically fed from the feed hopper 4 using the sampling system 5. The sampling system 5 is arranged at the upper part of the box body 1 and above the analysis and discharge device 2, and the sampling system 5 conveys samples to the analysis and discharge device 2 through the feeding funnel 4. More specifically, the sampling system 5 delivers samples through the feed hopper 4 to the sample holding container 201 of the analysis and discharge device 2 at the feed level a.
Generally, the sampling system 5 includes a feed plate 501, a feed plate driver 502, and a take out baffle 503. A feed plate driver 502 is provided above the case 1. The feed plate 501 is mounted to the extended front end of the moving shaft of the feed plate driver 502. The take-out shutter 503 is installed above the case 1 and above the recovery position (or recovery end position) of the feed plate 501. Preferably, the feed hopper 4 is mounted (e.g., inlaid) on the top cover plate of the tank 1 and below the recovery location (or recovery end location) of the feed plate 501.
Example 1
Referring to fig. 1-3, an absolute method on-line moisture detection system comprises a box 1, an analysis and discharge device 2 positioned on the left side inside the box 1, an operation drying device 3 positioned on the right side inside the box 1, and a sampling system 5 positioned above the analysis and discharge device 2. Wherein the analysis and discharge device 2 has a gripper 204 and the gripper 204 is rotatable in the horizontal direction along a rotation mechanism 206 and further has two stations: a feed level a and a weighing and discharge level b. The operation drying apparatus 3 has a turntable 301, four chambers provided on the turntable 301, a top cover 303 provided on an upper portion of the four chambers, and 3 microwave generators 304 provided on the top cover 303, and further has four stations: the first station c adjacent to the analysing and discharging device 2, the second station d, the third station e and the fourth station f thus being arranged in a counter-clockwise direction in sequence. The operation drying device is also provided with openings at the upper parts of the edges of the turntable 301 corresponding to the four chambers. Fixed closing baffles 306 are respectively arranged on the upper parts of the edges of the turntable 301 corresponding to the second station d, the third station e and the fourth station f. Wherein the four chambers are cyclically switched between the positions of the four stations.
The analysing and discharging device 2 is provided with a feed hopper 4 located above the feed level a and mounted on top of the tank 1. The sampling system 5 communicates with the analysis and discharge device 2 via a feed hopper 4. The sampling system 5 includes a feed plate 501, a feed plate driver 502, and a take out baffle 503. A feed plate driver 502 is provided above the case 1. The feed plate 501 is mounted to the extended front end of the moving shaft of the feed plate driver 502. The take-out baffle 503 is installed above the case 1 and above the recovery end position of the feed plate 501. The feed hopper 4 is mounted on the top cover plate of the cabinet 1 below the recovery end position of the feed plate 501.
The analysis and discharge device 2 comprises a sample container 201, a measuring platform 202, a first weighing device 203, a gripper 204, a gripper driver 205, a rotating mechanism 206, a vacuum tube 207, a vacuum pump 208 and a discharge tube 209. Wherein the measuring platform 202 is located below the feed level a and the weighing and discharging level b. The sample holder 201 is supported by the measurement platform 202. The first weighing device 203 is located in the lower part of the measuring platform 202 and the first weighing device 203 is located below the weighing and discharging level b. The grip driver 205 is installed at an upper portion of the rotation mechanism 206. The grip 204 is mounted on the protruding front end of the movable shaft of the grip driver 205. The vacuum tube 207 is provided on the top cover plate of the case 1 with its front port above the weighing and discharging level b, and the rear port of the vacuum tube 207 outside the case 1 is connected to the vacuum pump 208, and the other end of the vacuum pump 208 is connected to the discharging pipe 209. The measuring platform 202, the first weighing device 203 and the rotation mechanism 206 are fixed to the bottom inside the case 1, respectively.
The gripper 204 of the analysis and discharge device 2 may retract or extend its front half. That is, the front half of the gripper may be extended or retracted when the gripper reaches a different station. The sample container 201 can be gripped by lifting the grip 204, and the sample container 201 can be released by lowering the grip 204.
The operation drying device 3 includes a turntable 301, a motor 302 driving the turntable to rotate, four chambers provided on the turntable 301, a top cover 303 provided on the four chambers, and a plurality of microwave generators 304 provided on the top cover 303. Wherein the motor 302 is disposed at the bottom of the turntable 301, and 3 microwave generators 304 are disposed on the top cover 303 above the second, third and fourth stations d, e and f, respectively, and pass through the top cover plate of the cabinet 1.
A side wall panel 305 is also provided at the upper part of the rim of turntable 301. Four openings are provided at the side wall panels 305 corresponding to the four chambers. And a fixed sealing baffle 306 is arranged at the upper part of the edge of the rotary table 301 corresponding to the second station d, the third station e and the fourth station f. A stationary closure flap 306 is connected to the top cover 303.
The four chambers and the four stations of the operation drying device 3 have equal included angles of 90 ° with the axis of the turntable 301 as the vertex of the angle.
Example 2
Example 1 is repeated except that the run dryer 3 further comprises a second weighing device 307 arranged below the third station e and below the turntable 301.
Example 3
An absolute method on-line moisture detection method using the moisture detection system in embodiment 1, the method comprising the steps of:
1) The first weighing device 203 located below the weighing and discharging level b weighs the discharged sample container 201 (W 0 )；
2) The hand grip 204 grasps the sample container 201 by lifting, rotates the sample container 201 from the weighing and discharging position b to the feeding position a, loosens the sample container 201 by descending, places the sample container 201 on the measuring platform 202, and after receiving materials from the belt blanking position of the belt conveyor, the feeding plate 501 is driven to be recovered by the moving shaft of the feeding plate driver 502, the material of the feeding plate 501 is scraped by the material taking baffle 503, and sample materials flow into the sample container 201 along with the feeding funnel 4;
3) The hand grip 204 grips the sample container 201 to rotate the sample container 201 from the feeding position a to the weighing and discharging position b, the hand grip 204 releases the sample container 201, and the first weighing device 203 weighs the charged sample container 201 (W 1 )；
4) After weighing, the hand grip 204 rotates the sample container 201 from the weighing and discharging position b to the first station c, the sample container 201 sequentially passes through the second station d, the third station e and the fourth station f to be dried by microwaves under the bearing and driving of the turntable 301, and after drying, the sample container 201 rotates back to the first station c;
5) The hand grip 204 rotates the sample container 201 from the first station c to the weighing and discharging position b, and the first weighing device 203 weighs the dried sample container 201 (W 2 )；
6) According to formula (W 1 -W 2 )/(W 1 -W 0 ) Calculating the water content (%) of the gripped sample material;
7) Starting a vacuum pump 208 to discharge the dry materials in the sample container 201 through a discharge pipe 209;
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.
The test was completed in 2 minutes.
Example 4
An absolute method on-line moisture detection method, comprising the following steps:
1) The first weighing device 203 located below the weighing and discharging level b weighs the discharged sample container 201 (W 0 )；
2) The hand grip 204 grasps the sample container 201 by lifting, rotates the sample container 201 from the weighing and discharging position b to the feeding position a, releases the sample container 201 by descending, places the sample container 201 on the measuring platform 202, and manually samples and inputs sample materials into the sample container 201 from the feeding funnel 4;
3) The hand grip 204 grips the sample container 201 to rotate the sample container 201 from the feeding position a to the weighing and discharging position b, the hand grip 204 releases the sample container 201, and the first weighing device 203 weighs the charged sample container 201 (W 1 )；
4) After weighing, the hand grip 204 rotates the sample container 201 from the weighing and discharging position b to the first station c, the sample container 201 sequentially passes through the second station d, the third station e and the fourth station f to be dried by microwaves under the bearing and driving of the turntable 301, and after drying, the sample container 201 rotates back to the first station c;
5) The hand grip 204 rotates the sample container 201 from the first station c to the weighing and discharging position b, and the first weighing device 203 weighs the dried sample container 201 (W 2 )；
6) According to formula (W 1 -W 2 )/(W 1 -W 0 ) Calculating the water content (%) of the gripped sample material;
7) Starting a vacuum pump 208 to discharge the dry materials in the sample container 201 through a discharge pipe 209;
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.
The test was completed in 2.5 minutes.
Example 5
Example 3 was repeated except that in step 4) the second weighing device 307 weighed the sample holder 201 while the sample holder 201 was dried at the third station e, and if the weight did not change by 0.02g within 3 seconds, the sample material was considered to have been completely dried.
Claims (17)
1. The on-line moisture detection system comprises a box body (1), an analysis and discharge device (2) positioned on one side in the box body (1) and an operation drying device (3) positioned on the other side in the box body (1), wherein the analysis and discharge device (2) is provided with a gripper (204) and the gripper (204) is rotatable along a central shaft in the horizontal direction, and at least two stations are arranged: a feed level (a) and a weighing and discharging level (b); the operation drying device (3) comprises a turntable (301), a motor (302) for driving the turntable to rotate, four chambers arranged on the turntable (301), a top cover (303) positioned on the four chambers, and a plurality of microwave generators (304) arranged on the top cover (303), and also has four stations: a first station (c) close to the analyzing and discharging device (2), a second station (d), a third station (e) and a fourth station (f) which are sequentially arranged in a counterclockwise direction, wherein a motor (302) is arranged at the bottom of the rotary table (301), and a plurality of microwave generators (304) are respectively arranged on a top cover (303) above the second station (d), the third station (e) and the fourth station (f) and penetrate through the top of the box body (1); the operation drying device is also provided with openings at the upper part of the edges of the turntables (301) corresponding to the four chambers, the upper part of the edges of the turntables (301) is also provided with side wall plates (305), and four openings are arranged at the side wall plates (305) corresponding to the four chambers; the upper parts of the edges of the turntables (301) corresponding to the second station (d), the third station (e) and the fourth station (f) are respectively provided with a fixed sealing baffle (306), and the fixed sealing baffle (306) is connected with the top cover (303); each of the four chambers is surrounded by a baffle plate (305 a) arranged on the turntable; wherein the four chambers are cyclically switched between the positions of the four stations.
2. The detection system according to claim 1, wherein: the analysis and discharge device (2) is provided with a feed hopper (4) located above the feed level (a) and mounted on top of the tank (1).
3. The detection system according to claim 2, wherein: the analysis and discharge device (2) comprises a sample container (201), a measurement platform (202), a first weighing device (203), a gripper (204), a gripper driver (205), a rotating mechanism (206), a vacuum tube (207), a vacuum pump (208) and a discharge tube (209), wherein the measurement platform (202) is positioned below a material feeding position (a) and a material weighing and discharging position (b), the sample container (201) is supported by the measurement platform (202), the first weighing device (203) is positioned below the measurement platform (202) and the first weighing device (203) is positioned below the material weighing and discharging position (b), the gripper driver (205) is arranged on the upper part of the rotating mechanism (206), the gripper (204) is arranged at the extending front end of a motion shaft of the gripper driver (205), the front port of the vacuum tube (207) is positioned above the material weighing and discharging position (b), the rear port of the vacuum tube (207) is connected with the vacuum pump (208), and the other end of the vacuum pump (208) is connected with the discharge tube (209).
4. A detection system according to claim 3, wherein: the vacuum tube (207) is arranged at the top of the box body (1) and the front port of the vacuum tube is positioned above the weighing and discharging position (b), and the rear port of the vacuum tube (207) positioned outside the box body (1) is connected with the vacuum pump (208).
5. A detection system according to claim 3, wherein: the measuring platform (202), the first weighing device (203) and the rotating mechanism (206) are respectively fixed at the bottom in the box body (1) directly or indirectly.
6. The detection system according to any one of claims 1-5, wherein: the motor (302) is directly or indirectly fixed at the bottom in the box body (1).
7. A detection system according to claim 3, wherein: the operation drying device (3) further comprises a second weighing device (307) which is arranged below the third station (e) and is positioned at the lower part of the turntable (301).
8. The detection system of claim 7, wherein: the second weighing means (307) is fixed directly or indirectly to the bottom inside the tank (1).
9. The detection system according to any one of claims 3-5, 7-8, wherein: the front half part of the gripper (204) of the analysis and discharge device (2) can be retracted or extended; the sample container (201) can be gripped by lifting the grip (204), and the sample container (201) can be loosened by lowering the grip (204); and/or
The four chambers or the four stations of the running drying device (3) take the axle center of the rotary table (301) as the vertex of the angle, and have equal included angles of 90 degrees.
10. The detection system of claim 7, wherein: the detection system further comprises a sampling system (5), wherein the sampling system (5) is arranged on the upper portion of the box body (1) and is located above the analysis and discharge device (2), and the sampling system (5) conveys samples to the analysis and discharge device (2) through the feeding hopper (4).
11. The detection system according to claim 10, wherein: the sampling system (5) delivers samples to the sample container (201) of the analysis and discharge device (2) at the feed level (a) via the feed hopper (4).
12. The detection system according to claim 10, wherein: the sampling system (5) comprises a feeding plate (501), a feeding plate driver (502) and a material taking baffle plate (503), wherein the feeding plate driver (502) is arranged above the box body (1), the feeding plate (501) is arranged at the front end of a moving shaft of the feeding plate driver (502) in a stretching out mode, and the material taking baffle plate (503) is arranged above the box body (1) and located above the recycling position of the feeding plate (501).
13. The detection system of claim 12, wherein: the feeding funnel (4) is arranged on the top cover plate of the box body (1) and is positioned below the recycling position of the feeding plate (501).
14. A method of moisture detection using the on-line moisture detection system of claim 12, the method comprising the steps of:
1) Located at the weighing and discharging level (b)The first weighing device (203) below weighs the weight (W) of the discharged sample container (201) 0 )；
2) The gripper (204) is used for gripping the sample container (201) through lifting, rotating the sample container (201) from the weighing and discharging position (b) to the feeding position (a), loosening the sample container (201) through descending, placing the sample container (201) on the measuring platform (202), collecting the material from the belt blanking position of the belt conveyor by the feeding plate driver (502) after the feeding plate (501) is connected with the material, scraping the material of the feeding plate (501) by the material collecting baffle (503), and enabling the sample material to flow into the sample container (201) along with the feeding funnel (4), or manually sampling and inputting the sample material into the sample container (201) from the feeding funnel (4);
3) The hand grip (204) grips the sample container (201) and rotates the sample container (201) from the material feeding position (a) to the weighing and discharging position (b), the hand grip (204) loosens the sample container (201), and the first weighing device (203) weighs the weight (W) of the loaded sample container (201) 1 )；
4) After weighing, the hand grip (204) rotates the sample container (201) from the weighing and discharging position (b) to the first station (c), the sample container (201) sequentially passes through the second station (d), the third station (e) and the fourth station (f) to be dried by microwaves under the bearing and driving of the rotary table (301), and after drying, the sample container (201) rotates back to the first station (c);
5) The hand grip (204) rotates the sample container (201) from the first station (c) to the weighing and discharging position (b), and the first weighing device (203) weighs the weight (W) of the dried sample container (201) 2 )；
6) According to formula (W 1 -W 2 )/(W 1 -W 0 ) Calculating the water content (%) of the gripped sample material;
7) And starting a vacuum pump (208) to discharge the dry materials in the sample container (201) through a discharge pipe (209).
15. The method according to claim 14, wherein: in the step 4), when the sample container (201) is dried at the third station (e), the second weighing device (307) weighs the sample container (201), and if the weight does not change by 0.05g within 2-10 seconds, the sample material is considered to be dried completely.
16. The method according to claim 15, wherein: in the step 4), when the sample container (201) is dried at the third station (e), the second weighing device (307) weighs the sample container (201), and if the weight does not change by 0.02g within 3-5 seconds, the sample material is considered to be dried completely.
17. The method according to claim 15 or 16, characterized in that: 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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