CN115389270A - Material feeding detection sampling device and sampling method for vertical mill powder concentrator - Google Patents
Material feeding detection sampling device and sampling method for vertical mill powder concentrator Download PDFInfo
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- CN115389270A CN115389270A CN202210993951.8A CN202210993951A CN115389270A CN 115389270 A CN115389270 A CN 115389270A CN 202210993951 A CN202210993951 A CN 202210993951A CN 115389270 A CN115389270 A CN 115389270A
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- 238000005070 sampling Methods 0.000 title claims abstract description 119
- 239000000843 powder Substances 0.000 title claims abstract description 52
- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 title claims description 21
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 238000005259 measurement Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005514 two-phase flow Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 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
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
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Abstract
The invention relates to a vertical mill powder concentrator pan feeding detection sampling device and a sampling method, wherein the vertical mill powder concentrator pan feeding detection sampling device comprises a measuring pipeline and a sampler, a flange of a cylinder shell is provided with a detecting hole at the lower shell of the vertical mill powder concentrator, the measuring pipeline is welded outside the detecting hole, the sampler is of a double-layer design and comprises a sampler inner cylinder and a sampler outer cylinder, the cylinder is provided with a sampling hole and an air outlet hole, the sampler is inserted from the measuring pipeline during sampling, the sampling hole and the air outlet hole on the inner and outer cylinders are aligned, when the sampling is completed, the inner cylinder rotates 180 degrees, the outer cylinder is not moved, and the sampler is taken out; the flanges of the measuring pipeline, the outer barrel of the sampler and the inner barrel of the sampler are all connected with high-temperature-resistant sealing gaskets, so that the sealing performance of the pipeline is ensured during sampling, and after sampling is finished, the measuring pipeline is sealed by the flange baffles; the sampling device and the sampling method can solve the problem of feeding and sampling of the vertical mill powder concentrator, are simple to operate, are safe and reliable, and have important significance for feeding detection and analysis.
Description
Technical Field
The invention relates to the field of vertical mill powder selectors, in particular to a sampling device and a sampling method for detecting a fed material of a vertical mill powder selector.
Background
The vertical mill is a large-scale grinding device, which is widely applied to the industries of cement, electric power, metallurgy, non-metal ore and the like, and the cement factory commonly uses the vertical mill to grind raw materials, coal dust and cement. The vertical mill is composed of powder separator, grinding roller, grinding disc, pressure unit, speed reducer, motor and casing.
The powder selecting machine of the vertical mill is a grading device which can grade the materials ground by the vertical mill. The powder concentrator mainly comprises: casing, wind guide blade, selection powder machine rotor, rotor seal, drive arrangement etc.. The material levigated by the vertical mill enters the powder concentrator on the upper part from an air duct in the mill, is primarily selected through a gravity powder selection area, is subjected to variable speed and variable direction through air guide blades to form primary vortex, is subjected to comprehensive selection of centrifugal force and radial wind power provided by rotating rotor blades, and qualified fine powder can pass through gaps of the rotor blades of the powder concentrator and then enters a finished product collection system through an air outlet on the upper part of the powder concentrator. Unqualified coarse powder which is not removed from the interior of the rotor falls to the return cone firstly, then falls back to the grinding disc for grinding again, and enters the next grinding cycle.
When the powder concentrator is evaluated, the classification precision and the classification efficiency of the powder concentrator need to be known, and feeding information such as feeding particle size distribution and feeding concentration of the powder concentrator needs to be known. However, the inlet of the vertical mill is in a negative pressure state, the wind speed is about 6-10m/s, the vertical mill is a two-phase flow of air and micro powder materials, the gas temperature is higher than 100 ℃, and the sampling is difficult; therefore, it is necessary to develop a device and a method for detecting and sampling the material fed by the vertical mill powder concentrator to obtain the material fed information of the vertical mill powder concentrator.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a feeding detection sampling device of a vertical mill powder concentrator and a corresponding sampling method, which can effectively sample at the inlet of the vertical mill and are convenient for analyzing feeding information.
In order to achieve the purpose, the invention adopts the technical scheme that:
a material feeding detection sampling device of a vertical mill powder concentrator comprises a measuring pipeline and a sampler, wherein a flange of a lower shell of the vertical mill powder concentrator, which is close to a shell of a cylinder, is provided with a detecting hole, the measuring pipeline is welded outside the detecting hole, a measuring pipeline flange is welded at an outer port of the measuring pipeline, a flange baffle plate is arranged outside the sampling measuring pipeline flange, and when a sample is not taken, the flange baffle plate and a high-temperature-resistant sealing gasket are connected to the measuring pipeline flange through a bolt fastening assembly to seal the measuring pipeline; the sampler is of a double-layer structure and comprises a sampler inner cylinder and a sampler outer cylinder, a sampling end cylinder opening of the sampler inner cylinder is closed, an inner cylinder flange is welded at the other end of the sampler inner cylinder, the end cylinder opening is closed by the inner cylinder flange and is simultaneously connected with an inner cylinder handle, a sampling hole is formed in the side wall of the inner cylinder close to the sampling end, an air outlet hole is formed in the side wall of the inner cylinder opposite to the sampling hole, the diameter of the sampling hole is larger than that of the air outlet hole, and the air outlet hole and the sampling hole are staggered by a certain distance in the direction close to the handle end along the direction parallel to the axis of the sampler inner cylinder; the sampler outer barrel is provided with openings at two ends, the diameter of the sampler outer barrel is larger than that of the sampler inner barrel, and the sampler inner barrel can be inserted into the sampler outer barrel and rotates in the sampler outer barrel; an outer barrel flange is arranged at one end of the outer barrel of the sampler, a sampling hole and an air outlet hole corresponding to the inner barrel of the sampler are arranged on the side wall of the outer barrel positioned at the sampling end, marks of '1' and '2' are arranged on the end face of the outer barrel flange and respectively correspond to the position of the air outlet hole and the sampling hole, and an arrow is marked on the end face of the inner barrel flange corresponding to the position of the air outlet hole; and the inner cylinder flange and the outer cylinder flange are respectively connected with a high-temperature-resistant sealing gasket.
Further, when the inner cylinder flange tightly abuts against the outer cylinder flange, the sampling end of the inner cylinder of the sampler does not exceed the cylinder opening of the outer cylinder of the sampler.
Specifically, the diameter of the inner barrel of the sampler is 50-60mm, the diameter of a sampling hole on the inner barrel of the sampler is 30-40mm, and the diameter of an air outlet is 5-10mm.
Furthermore, two pin columns are welded on the end face of the outer cylinder flange, one pin column corresponds to the position of the mark 1, and the other pin column corresponds to the position of the mark 2.
Furthermore, the inner cylinder handle is provided with a small hole, and the small hole and the air outlet hole are located on the same bus and used for marking the position of the air outlet hole.
Furthermore, a handle is welded on the flange baffle.
Furthermore, the diameter of the sampling hole on the outer barrel of the sampler is larger than that of the sampling hole on the inner barrel of the sampler.
The invention also provides a sampling method for detecting the feeding of the vertical mill powder concentrator by using the sampling device, which comprises the following steps:
forming a detection hole at a proper position of the lower shell of the powder concentrator, which is close to the flange of the cylinder shell, and welding a measurement pipeline;
when the sampling is not carried out, a flange baffle and a high-temperature-resistant sealing gasket are used for blocking a middle measuring port on a measuring pipeline flange, and then the flange baffle and the measuring pipeline flange are fixed by a plurality of bolt fastening assemblies;
when sampling, firstly removing a flange baffle and a high-temperature-resistant sealing gasket, then enabling a mark '1' on a flange of an outer barrel of a sampler to face upwards, inserting the outer barrel of the sampler into a measuring pipeline, then enabling an arrow at the end part of a flange of an inner barrel of the sampler to face upwards, then inserting the inner barrel of the sampler into the outer barrel of the sampler, simultaneously enabling the flange of the outer barrel and the high-temperature-resistant sealing gasket to tightly abut against the flange of the measuring pipeline, enabling the flange of the inner barrel and the high-temperature-resistant sealing gasket to tightly abut against the flange of the outer barrel, keeping the position for a certain time, enabling the pipeline of the inner barrel of the sampler to enter a certain sample, rotating the inner barrel of the sampler by 180 degrees, enabling the arrow on the flange of the inner barrel to face downwards, and enabling the outer barrel of the sampler not to rotate together in the process; then, the sampler inner cylinder and the sampler outer cylinder are pulled out together according to the position, and then the flange baffle and the high-temperature-resistant sealing gasket are used for sealing the measuring port of the measuring pipeline, so that the sampling work is completed.
Has the beneficial effects that:
1. the invention solves the problem of sampling the particles fed by the vertical mill powder concentrator, and the sampler has simple operation and safe and reliable sampling process.
2. Through the sealed design of sample, eliminated the influence of negative pressure to it when founding mill selection powder machine sample, guaranteed the feasibility of sample.
Drawings
FIG. 1 is a partial structure diagram of a vertical mill powder concentrator without a sampling device;
FIG. 2 is a schematic view of the structure with a sampling device and without sampling;
FIG. 3 is a schematic view of a sampling device in sampling;
FIG. 4 is a schematic view of the inner barrel and sealing structure of the sampler;
fig. 5 is a schematic view of the sampler outer barrel and sealing structure.
1-a lower shell of the powder concentrator; 2-bolt fastening assembly; 3-flange baffle; 4-high temperature resistant sealing gasket I; 5-measuring a pipeline flange; 6-measuring the pipeline; 7-a cartridge housing; 8-an inner shell; 9-inner barrel of sampler; 10-high temperature resistant sealing gasket II; 11-a sampler outer cylinder; 12-high temperature resistant sealing gasket III, 13-sampling hole, 14-air outlet hole, 15 inner cylinder flange, 16-outer cylinder flange and 17-small hole.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1-5, fig. 1 is a schematic structural diagram of the lower casing of the vertical mill powder concentrator near the cylinder casing and when no sampling device is provided, and fig. 2 is a schematic structural diagram of the lower casing of the vertical mill powder concentrator near the flange of the cylinder casing and when a hole is formed and a sampling device is provided.
The invention discloses a material feeding detection sampling device of a vertical mill powder concentrator, which comprises a measuring pipeline 6 and a sampler, wherein a flange of a lower shell 1 of the vertical mill powder concentrator, which is close to a cylinder shell 7, is provided with a detection hole, the measuring pipeline 6 is welded outside the detection hole, an outer port of the measuring pipeline 6 is welded with a measuring pipeline flange 5, a flange baffle 3 is arranged outside the measuring pipeline flange 5, one side of the flange baffle 3 is fixed with a high-temperature-resistant sealing gasket I4, the other side of the flange baffle is connected with a handle, and when the sampling is not carried out, the flange baffle 3 and the high-temperature-resistant sealing gasket I4 are connected onto the measuring pipeline flange 5 through a bolt fastening component 2, and a measuring port of the measuring pipeline 6 is sealed, as shown in figure 2.
As shown in fig. 3 to 5, the sampler of the present invention is designed in a double structure comprising a sampler inner cylinder 9 and a sampler outer cylinder 11, the diameter of the sampler outer cylinder 11 being larger than that of the sampler inner cylinder 9, and the sampler inner cylinder 9 can be inserted into the sampler outer cylinder 11 and rotated in the sampler outer cylinder 11.
As shown in fig. 4, the sampling end opening of the sampler inner cylinder 9 is sealed, the other end is welded with an inner cylinder flange 15, the inner cylinder flange 15 seals the end opening and is connected with an inner cylinder handle, a sampling hole 13 is formed on the inner cylinder side wall close to the sampling end, an air outlet 14 is formed on the inner cylinder side wall opposite to the sampling hole 13, the diameter of the sampling hole 13 is larger than that of the air outlet 14, and along the direction parallel to the axis of the sampler inner cylinder 9, the air outlet 14 is staggered with the sampling hole 13 by a certain distance towards the direction close to the handle end.
The two ends of the sampler outer cylinder 11 are both open, one end of the sampler outer cylinder 11 is provided with an outer cylinder flange 16, and the side wall of the outer cylinder at the sampling end is also provided with a sampling hole 13 and an air outlet 14, as shown in fig. 3, when the sampler inner cylinder 9 is inserted into the sampler outer cylinder 11 and moves in place, the sampling hole 13 and the air outlet 14 on the sampler outer cylinder 11 can be aligned with the sampling hole 13 and the air outlet 14 on the sampler inner cylinder 9 respectively.
As shown in fig. 5, in order to facilitate the rapid identification of the positions of the sampling holes 13 and the air outlet holes 14 during operation, marks "1" and "2" are respectively provided on the end surface of the outer cylinder flange 16, the mark "1" corresponds to the position of the air outlet hole 14 on the outer cylinder 11 of the sampler, and the mark "2" corresponds to the position of the sampling hole 13 on the outer cylinder 11 of the sampler; as shown in fig. 4, the orientation of the end face of the inner cylinder flange 15 corresponding to the air outlet cylinder 14 is marked with an arrow for indicating the orientation of the air outlet hole 14.
Furthermore, a second high-temperature-resistant sealing gasket 10 is connected to the inner cylinder flange 15, and a third high-temperature-resistant sealing gasket 12 is connected to the outer cylinder flange 16.
According to the invention, the sampler is arranged into a double-layer structure, the outer sampler barrel 11 can effectively protect the inner sampler barrel 9, and the influence of negative pressure on sampling is prevented; when the inner cylinder flange 15 is tightly abutted to the outer cylinder flange 16, the sampling end of the sampler inner cylinder 9 does not exceed the cylinder opening of the sampler outer cylinder 11, at the moment, the mark '1' of the outer cylinder flange 16 and the arrow on the inner cylinder flange 15 point to the same position, and the sampling hole 13 and the air outlet hole 14 on the sampler outer cylinder 11 can be aligned to the sampling hole 13 and the air outlet hole 14 on the sampler inner cylinder 9; preferably, the diameters of the sampling holes 13 and the air outlet holes 14 on the sampler outer cylinder 11 can be slightly larger than the diameters of the corresponding sampling holes 13 and air outlet holes 14 on the sampler inner cylinder 9.
In order to operate the sampler outer cylinder 11 conveniently, two pins are welded on the end face of the outer cylinder flange 16, as shown in fig. 5, one pin corresponds to the position marked with "1", and the other pin corresponds to the position marked with "2", and during operation, the pin can be held by hand to put the sampler outer cylinder 11 into or pull out of the measuring pipeline 6, and the angle of the sampler outer cylinder 11 can be rotated; in addition, as shown in fig. 4, a small hole 17 is formed in the handle of the inner cylinder, and the small hole 17 and the air outlet 14 are located on the same bus and used for marking the position of the air outlet 14, so that a worker can quickly judge the position of the air outlet 14 at the sampling end during sampling.
Specifically, in the invention, the diameter of the inner cylinder of the sampler is 50-60mm, the diameter of the sampling hole on the inner cylinder is 30-40mm, the diameter of the air outlet is 5-10mm, and the diameters of the sampling hole and the air outlet on the outer cylinder of the sampler are equal to or slightly larger than the diameters of the sampling hole and the air outlet on the inner cylinder of the sampler; the wall thicknesses of the inner barrel, the outer barrel and the measuring pipeline of the sampler are all 2-3mm, the inner diameter of the outer barrel of the sampler is 2-4mm larger than the diameter of the inner barrel of the sampler, and the diameter of the measuring pipeline is 2-4mm larger than the diameter of the outer barrel of the sampler.
The invention also provides a sampling method for detecting the feeding of the vertical mill powder concentrator, which comprises the following steps:
forming a detection hole at a proper position of the lower shell 1 of the powder concentrator, which is close to a flange of a cylinder shell 7, and then welding a measurement pipeline 6;
when the sampling is not carried out, a flange baffle 3 and a high-temperature-resistant sealing gasket I4 are used for blocking a middle measuring port on a measuring pipeline flange 5, and then the flange baffle 3 and the measuring pipeline flange 5 are fixed by a plurality of bolt fastening assemblies 2;
during sampling, the flange baffle 3 and the first high-temperature-resistant sealing gasket 4 are removed, then the mark '1' on the flange 16 of the outer cylinder of the sampler is made to face upwards, namely the air outlet hole 14 on the outer cylinder 11 of the sampler faces upwards and the sampling hole 13 faces downwards, the outer cylinder 11 of the sampler is inserted into the measuring pipeline 6, then the arrow at the end part of the flange 15 of the inner cylinder of the sampler faces upwards, namely the air outlet hole 14 of the inner cylinder 9 of the sampler faces upwards and the sampling hole 13 faces downwards, then the inner cylinder 9 of the sampler is inserted into the outer cylinder 11 of the sampler, meanwhile, the flange 16 of the outer cylinder and the third high-temperature-resistant sealing gasket 12 tightly abut against the flange 5 of the measuring pipeline, the flange 15 of the inner cylinder and the second high-temperature-resistant sealing gasket 10 tightly abut against the flange 16 of the outer cylinder to ensure the tightness of the pipeline during sampling, the position is kept for a certain time, under the action of two-phase flow negative pressure, material particles can enter the inner cylinder 9 from the sampling hole 14, the air pressure is released from the air outlet hole 14, a part of the material particles are left in the inner cylinder 9 of the sampling hole, after the pipeline of the inner cylinder 9 enters a certain sample, the inner cylinder 180 of the sampler, the inner cylinder is rotated to ensure that the arrow on the inner cylinder 15 just faces downwards, the inner cylinder 13 of the inner cylinder is just right, and the inner cylinder is prevented from being rotated to the sampling hole, and not to be rotated to the sampling hole of the outer cylinder 11 of the sampler together; then, the sampler inner cylinder 9 and the sampler outer cylinder 11 are pulled out together according to the position, and then the flange baffle 3 and the high-temperature-resistant sealing gasket I4 are used for sealing the measuring opening of the measuring pipeline 6, so that the sampling work is completed.
After the inner barrel of the sampler is pulled out from the measuring pipeline, the obtained material is poured out from the material taking port, and feeding information such as feeding particle size distribution, feeding concentration and the like can be analyzed, so that the grading precision and the grading efficiency of the powder concentrator can be obtained.
According to the invention, through skillfully designing the sampling device and the sampling method, the problem of sampling the feeding material of the powder concentrator is effectively solved, the influence of negative pressure and high temperature inside the powder concentrator is fully considered, the measurement pipeline and the sampler are both hermetically designed, and the sampler adopts a double-layer nested structure, so that the influence of the negative pressure on sampling is fully reduced, and smooth sampling is ensured.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A vertical mill powder concentrator pan feeding detection sampling device comprises a measuring pipeline and a sampler, and is characterized in that a detecting hole is formed in a position, close to a flange of a cylinder shell, of a lower shell of a vertical mill powder concentrator, the measuring pipeline is welded outside the detecting hole, a measuring pipeline flange is welded at an outer port of the measuring pipeline, a flange baffle is arranged outside the measuring pipeline flange, and when sampling is not performed, the flange baffle and a high-temperature-resistant sealing gasket are connected to the measuring pipeline flange through a bolt fastening assembly to seal the measuring pipeline; the sampler is of a double-layer structure and comprises a sampler inner cylinder and a sampler outer cylinder, a sampling end cylinder opening of the sampler inner cylinder is closed, an inner cylinder flange is welded at the other end of the sampler inner cylinder, the end cylinder opening is closed by the inner cylinder flange and is simultaneously connected with an inner cylinder handle, a sampling hole is formed in the side wall of the inner cylinder close to the sampling end, an air outlet hole is formed in the side wall of the inner cylinder opposite to the sampling hole, the diameter of the sampling hole is larger than that of the air outlet hole, and the air outlet hole and the sampling hole are staggered by a certain distance in the direction close to the handle end along the direction parallel to the axis of the sampler inner cylinder; the sampler outer barrel is provided with openings at two ends, the diameter of the sampler outer barrel is larger than that of the sampler inner barrel, and the sampler inner barrel can be inserted into the sampler outer barrel and rotates in the sampler outer barrel; an outer barrel flange is arranged at one end of the outer barrel of the sampler, a sampling hole and an air outlet hole corresponding to the inner barrel of the sampler are arranged on the side wall of the outer barrel positioned at the sampling end, marks of '1' and '2' are arranged on the end face of the outer barrel flange and respectively correspond to the position of the air outlet hole and the sampling hole, and an arrow is marked on the end face of the inner barrel flange corresponding to the position of the air outlet hole; and the inner cylinder flange and the outer cylinder flange are respectively connected with a high-temperature-resistant sealing gasket.
2. The pan material detecting and sampling device for the vertical mill powder concentrator as claimed in claim 1, wherein the sampling end of the inner cylinder of the sampler does not extend beyond the mouth of the outer cylinder of the sampler when the flange of the inner cylinder is tightly pressed against the flange of the outer cylinder.
3. The device for detecting and sampling the pan material fed to the powder concentrator of a vertical mill as claimed in claim 1, wherein the diameter of the inner cylinder of the sampler is 50-60mm, the diameter of the sampling hole on the inner cylinder of the sampler is 30-40mm, and the diameter of the air outlet is 5-10mm.
4. The device for detecting and sampling the fed material of the vertical mill powder concentrator as claimed in claim 1, wherein two pins are welded to the end face of the outer cylinder flange, one pin corresponds to the position marked with "1", and the other pin corresponds to the position marked with "2".
5. The device for detecting and sampling the material fed into the vertical mill powder concentrator as claimed in claim 1, wherein the inner cylinder handle is provided with a small hole, and the small hole and the air outlet are located on the same bus line and used for marking the position of the air outlet.
6. The device for detecting and sampling the feeding of the vertical mill powder concentrator as claimed in claim 1, wherein the flange baffle is welded with a handle.
7. The material detecting and sampling device for the vertical mill powder concentrator as claimed in claim 1, wherein the diameter of the sampling hole on the outer cylinder of the sampler is larger than that of the sampling hole on the inner cylinder of the sampler.
8. A sampling method for detecting the material fed into the vertical mill powder concentrator by using the sampling device according to any one of claims 1 to 7, which is characterized by comprising the following steps:
forming a detection hole at a proper position of the lower shell of the powder concentrator, which is close to the flange of the cylinder shell, and then welding a measurement pipeline;
when the sampling is not carried out, a flange baffle and a high-temperature-resistant sealing gasket are used for blocking a middle measuring port on a measuring pipeline flange, and then the flange baffle and the measuring pipeline flange are fixed by a plurality of bolt fastening assemblies;
when sampling, firstly removing a flange baffle and a high-temperature-resistant sealing gasket, then enabling a mark '1' on a flange of an outer barrel of a sampler to face upwards, inserting the outer barrel of the sampler into a measuring pipeline, then enabling an arrow at the end part of a flange of an inner barrel of the sampler to face upwards, then inserting the inner barrel of the sampler into the outer barrel of the sampler, simultaneously enabling the flange of the outer barrel and the high-temperature-resistant sealing gasket to tightly abut against the flange of the measuring pipeline, enabling the flange of the inner barrel and the high-temperature-resistant sealing gasket to tightly abut against the flange of the outer barrel, keeping the position for a certain time, enabling the pipeline of the inner barrel of the sampler to enter a certain sample, rotating the inner barrel of the sampler by 180 degrees, enabling the arrow on the flange of the inner barrel to face downwards, and enabling the outer barrel of the sampler not to rotate together in the process; then, the sampler inner cylinder and the sampler outer cylinder are pulled out together according to the position, and then the flange baffle and the high-temperature-resistant sealing gasket are used for sealing the measuring port of the measuring pipeline, so that the sampling work is completed.
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| CN202210993951.8A CN115389270B (en) | 2022-08-18 | 2022-08-18 | Feeding detection sampling device and sampling method for vertical mill powder concentrator |
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|---|---|---|---|---|
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| CN108332986A (en) * | 2018-01-25 | 2018-07-27 | 浙江大学 | A kind of sampler and method |
| CN110308021A (en) * | 2019-08-06 | 2019-10-08 | 中材（天津）粉体技术装备有限公司 | A kind of roller mill separator efficiency test sampler |
| CN216870133U (en) * | 2022-01-11 | 2022-07-01 | 湖北蔚天环保科技有限公司 | Quick pollution-free sampling device for manual detection of flue gas exhaust funnel |
| CN217059508U (en) * | 2022-03-14 | 2022-07-26 | 上海传伟信息科技有限公司 | Novel sampling device applied to powder production site |
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