CN115389270B - Feeding detection sampling device and sampling method for vertical mill powder concentrator - Google Patents
Feeding detection sampling device and sampling method for vertical mill powder concentrator Download PDFInfo
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- CN115389270B CN115389270B CN202210993951.8A CN202210993951A CN115389270B CN 115389270 B CN115389270 B CN 115389270B CN 202210993951 A CN202210993951 A CN 202210993951A CN 115389270 B CN115389270 B CN 115389270B
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- 238000005070 sampling Methods 0.000 title claims abstract description 112
- 239000000843 powder Substances 0.000 title claims abstract description 50
- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000005259 measurement Methods 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 230000005514 two-phase flow Effects 0.000 description 2
- 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
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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
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a feeding detection sampling device of a vertical mill powder concentrator and a sampling method, comprising a measuring pipeline and a sampler, wherein a detection hole is formed in a flange, close to a shell of a cylinder, of a lower shell of the vertical mill powder concentrator; the flanges of the measuring pipeline, the outer barrel of the sampler and the inner barrel of the sampler are connected with high-temperature-resistant sealing gaskets, so that the tightness of the pipeline during sampling is ensured, and the measuring pipeline is sealed through a flange baffle after the sampling is completed; the sampling device and the sampling method can solve the feeding sampling problem 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 powder separators of vertical mills, in particular to a feeding detection sampling device and a sampling method of a powder separator of a vertical mill.
Background
The vertical mill is a large-scale grinding device, and is widely applied to industries of cement, electric power, metallurgy, nonmetallic ores and the like, and the vertical mill is commonly used for grinding raw materials, coal dust and cement in cement factories. The vertical mill consists of a powder selecting machine (separator), a grinding roller device, a grinding disc device, a pressurizing device, a speed reducer, a motor, a shell and the like.
The powder selecting machine of the vertical mill is a classification device which can classify the materials which are ground by the vertical mill. The powder selecting machine mainly comprises: the device comprises a shell, air guide blades, a powder concentrator rotor, a rotor sealing device, a driving device and the like. The ground materials of the vertical mill are introduced into the powder selecting machine at the upper part from the inner air belt of the mill, firstly undergo primary selection by a gravity powder selecting area, then undergo variable speed and variable direction by the air guiding blades to form primary vortex, and then undergo comprehensive selection of centrifugal force and radial wind force provided by the rotating rotor blades, and qualified fine powder can pass through the gaps of the rotor blades of the powder selecting machine and then enter a finished product collecting system through an air outlet at the upper part of the powder selecting machine. Unqualified coarse powder which does not enter the rotor can firstly fall into the material returning cone and then fall back into the millstone to grind again, and then enter the next grinding cycle.
The classification accuracy and the classification efficiency of the powder concentrator are required to be known when the powder concentrator is evaluated, and the feeding information such as the feeding particle size distribution, the feeding concentration and the like of the powder concentrator are required 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; it is necessary to develop a device and a method for detecting and sampling the feeding of the vertical mill powder concentrator to obtain the feeding 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 a vertical mill inlet and is convenient for analyzing feeding information.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The feeding detection sampling device of the vertical mill powder concentrator comprises a measurement pipeline and a sampler, wherein a detection hole is formed in a flange part, close to a shell body, of a lower shell body of the vertical mill powder concentrator, the measurement pipeline is welded outside the detection hole, a measurement pipeline flange is welded at an outer port of the measurement pipeline, a flange baffle is arranged outside the sampling measurement pipeline flange, and when sampling is not performed, the flange baffle and a high-temperature-resistant sealing gasket are connected to the measurement pipeline flange through a bolt fastening assembly to seal the measurement pipeline; the sampler is of a double-layer structure and comprises an inner sampler barrel and an outer sampler barrel, a sampling end barrel opening of the inner sampler barrel is sealed, an inner barrel flange is welded at the other end of the inner sampler barrel, the inner barrel flange seals the end barrel opening and is simultaneously connected with an inner barrel handle, a sampling hole is formed in the side wall of the inner barrel close to the sampling end, an air outlet hole is formed in the side wall of the inner barrel 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 is staggered with the sampling hole by a distance along the direction parallel to the axis of the inner sampler barrel in the direction close to the handle end; the two ends of the outer sampler barrel are open, the diameter of the outer sampler barrel is larger than that of the inner sampler barrel, and the inner sampler barrel can be inserted into the outer sampler barrel and rotate in the outer sampler barrel; an outer cylinder flange is arranged at one end of the outer cylinder of the sampler, a sampling hole and an air outlet hole which correspond to the inner cylinder of the sampler are arranged on the side wall of the outer cylinder positioned at the sampling end, marks '1' and '2' are arranged on the end face of the outer cylinder flange and correspond to the positions of the air outlet hole and the sampling hole respectively, and an arrow is marked on the end face of the inner cylinder flange and corresponds 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 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 the sampling hole on the inner barrel of the sampler is set to be 30-40mm, and the diameter of the air outlet hole is set to be 5-10mm.
Further, two pin columns are welded on the end face of the outer barrel 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'.
Further, a small hole is formed in the inner cylinder handle, and the small hole and the air outlet are located on the same bus and used for marking the position of the air outlet.
Further, a handle is welded on the flange baffle.
Further, 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:
A detection hole is formed in a proper position of a lower shell of the powder concentrator, which is close to a flange of the shell of the cylinder, and then a measurement pipeline is welded;
When the sampling is not performed, 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 a plurality of bolt fastening components are used for fixing the flange baffle and the measuring pipeline flange;
During sampling, firstly removing a flange baffle and a high-temperature-resistant sealing gasket, then firstly enabling a mark '1' on a flange of an outer cylinder of a sampler to face upwards, inserting the outer cylinder of the sampler into a measuring pipeline, secondly enabling an arrow at the end part of the flange of an inner cylinder of the sampler to face upwards, and then inserting the inner cylinder of the sampler into the outer cylinder of the sampler, meanwhile, enabling the flange of the outer cylinder and the high-temperature-resistant sealing gasket to tightly abut against the flange of the measuring pipeline, enabling the flange of the inner cylinder and the high-temperature-resistant sealing gasket to tightly abut against the flange of the outer cylinder, keeping the position for a certain time, enabling the pipeline of the inner cylinder of the sampler to enter a certain sample, and then rotating the inner cylinder of the sampler for 180 degrees, so that the arrow on the flange of the inner cylinder faces downwards, and enabling the outer cylinder of the sampler not to rotate along with the process; then, the inner and outer sampler barrels are pulled out together according to the position, and then the flange baffle and the high-temperature-resistant sealing gasket are used to seal the measuring port of the measuring pipeline, so that the sampling work is completed.
The beneficial effects are that:
1. The invention solves the problem of sampling the feeding particles of the vertical mill powder concentrator, and the sampler is simple to operate and safe and reliable in sampling process.
2. Through the design of sampling seal, the influence of negative pressure on the vertical mill powder concentrator during sampling is eliminated, and the feasibility of sampling is ensured.
Drawings
FIG. 1 is a schematic diagram of a partial structure of a vertical mill powder concentrator without a sampling device;
FIG. 2 is a schematic diagram of a structure with a sampling device, without sampling;
FIG. 3 is a schematic diagram of a sampling device with sampling;
FIG. 4 is a schematic view of the inner barrel and seal arrangement of the sampler;
fig. 5 is a schematic view of the outer cartridge and seal arrangement of the sampler.
1-A lower shell of the powder concentrator; 2-a bolt-fastening assembly; 3-a flange baffle; 4-a first high-temperature-resistant sealing gasket; 5-measuring a pipeline flange; 6-measuring a pipeline; 7-a cylinder shell; 8-an inner housing; 9-a sampler inner barrel; 10-a high-temperature-resistant sealing gasket II; 11-a sampler outer barrel; the device comprises a third high-temperature-resistant sealing gasket, a sampling hole, a 14-air outlet hole, an inner cylinder flange, a 16-outer cylinder flange and a 17-small hole.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
Fig. 1 to 5 show, wherein fig. 1 is a schematic structural diagram of the lower shell of the vertical mill powder concentrator near the shell of the cylinder body when no sampling device is arranged, and fig. 2 is a schematic structural diagram of the lower shell of the vertical mill powder concentrator near the flange of the shell of the cylinder body when a sampling device is arranged.
The invention relates to a feeding detection sampling device of a vertical mill powder concentrator, which comprises a measuring pipeline 6 and a sampler, wherein a detection hole is formed in a flange part, close to a cylinder body shell 7, of a lower shell 1 of the vertical mill powder concentrator, the measuring pipeline 6 is welded outside the detection hole, a measuring pipeline flange 5 is welded at an outer port of the measuring pipeline 6, a flange baffle 3 is arranged outside the measuring pipeline flange 5, a high-temperature-resistant sealing gasket I4 is fixed on one side of the flange baffle 3, a handle is connected on the other side of the flange baffle 3, and when the vertical mill powder concentrator is not used for sampling, the flange baffle 3 and the high-temperature-resistant sealing gasket I4 are connected to the measuring pipeline flange 5 through a bolt fastening assembly 2, and a measuring port of the measuring pipeline 6 is plugged as shown in fig. 2.
As shown in fig. 3 to 5, the sampler of the present invention is designed as a double-layer structure including a sampler inner barrel 9 and a sampler outer barrel 11, the diameter of the sampler outer barrel 11 is larger than that of the sampler inner barrel 9, and the sampler inner barrel 9 can be inserted into the sampler outer barrel 11 and rotated in the sampler outer barrel 11.
As shown in fig. 4, the sampling end opening of the inner barrel 9 of the sampler is closed, the other end is welded with an inner barrel flange 15, the inner barrel flange 15 seals the end opening and simultaneously connects with an inner barrel handle, a sampling hole 13 is formed in the inner barrel side wall close to the sampling end, an air outlet hole 14 is formed in the inner barrel side wall on the opposite side of the sampling hole 13, the diameter of the sampling hole 13 is larger than that of the air outlet hole 14, and the air outlet hole 14 is staggered with the sampling hole 13 by a distance in the direction close to the handle end along the direction parallel to the axis of the inner barrel 9 of the sampler.
The two ends of the outer sampler barrel 11 are open, one end of the outer sampler barrel 11 is provided with an outer barrel flange 16, the outer barrel side wall at the sampling end is also provided with a sampling hole 13 and an air outlet hole 14, as shown in fig. 3, when the inner sampler barrel 9 is inserted into the outer sampler barrel 11 and advances in place, the sampling hole 13 and the air outlet hole 14 on the outer sampler barrel 11 can be aligned with the sampling hole 13 and the air outlet hole 14 on the inner sampler barrel 9 respectively.
As shown in fig. 5, in order to facilitate rapid resolution of the positions of the sampling hole 13 and the gas outlet hole 14 during operation, marks "1" and "2" are respectively provided on the end face of the outer cylinder flange 16, the mark "1" corresponds to the position of the gas 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, an arrow is marked on the end face of the inner cylinder flange 15, which corresponds to the air outlet cylinder 14, and is used for indicating the position of the air outlet hole 14.
Further, the inner cylinder flange 15 is connected with a second high-temperature-resistant sealing gasket 10, and the outer cylinder flange 16 is connected with a third high-temperature-resistant sealing gasket 12.
According to the invention, the sampler is arranged into a double-layer structure, and the outer sampler barrel 11 can form effective protection for the inner sampler barrel 9, so that the influence of negative pressure on sampling is prevented; when the inner cylinder flange 15 abuts against the outer cylinder flange 16, the sampling end of the inner cylinder 9 of the sampler does not exceed the cylinder opening of the outer cylinder 11 of the sampler, at this time, 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 outer cylinder 11 of the sampler can be aligned with the sampling hole 13 and the air outlet hole 14 on the inner cylinder 9 of the sampler; preferably, the diameters of the sampling holes 13 and the air outlet holes 14 on the outer sampler barrel 11 can be slightly larger than the diameters of the corresponding sampling holes 13 and air outlet holes 14 on the inner sampler barrel 9.
In order to facilitate the operation of the outer cylinder 11 of the sampler, two pins are welded on the end face of the flange 16 of the outer cylinder, as shown in fig. 5, one pin corresponds to the position of the mark "1", the other pin corresponds to the position of the mark "2", and during the operation, the pins can be held by hands to put or pull the outer cylinder 11 of the sampler into or out of the measuring pipeline 6, and the angle of the outer cylinder 11 of the sampler is rotated; in addition, as shown in fig. 4, the inner cylinder handle is provided with a small hole 17, the small hole 17 and the air outlet hole 14 are positioned on the same bus for marking the position of the air outlet hole 14, so that the position of the air outlet hole 14 at the sampling end can be rapidly judged when a worker samples.
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 set to be 30-40mm, the diameter of the air outlet hole is 5-10mm, and the diameters of the sampling hole and the air outlet hole on the outer cylinder of the sampler are equal to or slightly about the diameters of the sampling hole and the air outlet hole on the inner cylinder of the sampler; the wall thickness 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:
a detection hole is formed in a proper position of the lower shell 1 of the powder concentrator, which is close to a flange of the barrel shell 7, and then a measurement pipeline 6 is welded;
When the sampling is not performed, a flange baffle 3 and a high-temperature-resistant sealing gasket I4 are used for blocking an intermediate measuring port on a measuring pipeline flange 5, and then a plurality of bolt fastening components 2 are used for fixing the flange baffle 3 and the measuring pipeline flange 5;
During sampling, firstly removing the flange baffle 3 and the first high-temperature-resistant sealing gasket 4, then firstly enabling the mark '1' on the flange 16 of the outer barrel of the sampler to face upwards, namely, enabling the air outlet hole 14 on the flange 16 of the outer barrel of the sampler to face downwards, namely, enabling the sampling hole 13 to face downwards, inserting the outer barrel 11 of the sampler into the measuring pipeline 6, enabling the arrow at the end part of the flange 15 of the inner barrel of the sampler to face upwards, namely, enabling the air outlet hole 14 of the inner barrel 9 of the sampler to face upwards, enabling the sampling hole 13 of the inner barrel 9 of the sampler to face downwards, inserting the inner barrel 9 of the sampler into the outer barrel 11, simultaneously enabling the flange 16 of the outer barrel and the third high-temperature-resistant sealing gasket 12 to tightly abut against the flange 5 of the measuring pipeline, enabling the flange 15 of the inner barrel and the second high-temperature-resistant sealing gasket 10 to tightly abut against the flange 16 of the outer barrel, ensuring the tightness of the pipeline during sampling, keeping a certain time, enabling material particles to enter the inner barrel 9 of the sampler under the action of negative pressure of the two-phase flow, releasing air pressure from the air outlet hole 14, enabling a part of the material particles to stay in the sampling hole 9 of the pipeline of the inner barrel 9 of the sampler, rotating 180 DEG after the pipeline of the inner barrel 9 of the sampler enters a certain sample, enabling the arrow of the inner barrel of the sampler to face downwards, namely, enabling the arrow of the inner barrel 15 to face right to face downwards, namely, enabling the inner barrel of the sample to face upwards to rotate, namely, when the sample is turned up, and the sample, the 11 is prevented from falling down; then, the inner cylinder 9 and the outer cylinder 11 are pulled out together according to the position, and then the flange baffle 3 and the high temperature resistant gasket 4 are used to seal the measuring port of the measuring pipeline 6, thus completing the sampling work.
After the inner barrel of the sampler is pulled out of the measuring pipeline, the obtained material is poured out from the material taking opening, and feeding information such as feeding granularity distribution, feeding concentration and the like can be analyzed, so that the grading precision and the grading efficiency of the powder concentrator are further obtained.
According to the invention, through skillfully designing the sampling device and the sampling method, the feeding sampling problem of the powder concentrator is effectively solved, the influence of negative pressure and high temperature in the powder concentrator is fully considered, the measuring pipeline and the sampler are both subjected to sealing design, and the sampler adopts a double-layer nested structure, so that the influence of the negative pressure on sampling is fully reduced, and the smooth sampling is ensured.
The present invention is not limited to the above-mentioned embodiments, but is intended to be limited to the following embodiments, and any modifications, equivalent changes and variations in the above-mentioned embodiments can be made by those skilled in the art without departing from the scope of the present invention.
Claims (6)
1. The feeding detection sampling device of the vertical mill powder concentrator comprises a measurement pipeline and a sampler, and is characterized in that a detection hole is formed in a flange part, close to a shell body, of a lower shell body of the vertical mill powder concentrator, the measurement pipeline is welded outside the detection hole, a measurement pipeline flange is welded at an outer port of the measurement pipeline, a flange baffle is arranged outside the measurement pipeline flange, and when sampling is not performed, the flange baffle and a high-temperature-resistant sealing gasket are connected to the measurement pipeline flange through a bolt fastening assembly to seal the measurement pipeline; the sampler is of a double-layer structure and comprises an inner sampler barrel and an outer sampler barrel, a sampling end barrel opening of the inner sampler barrel is sealed, an inner barrel flange is welded at the other end of the inner sampler barrel, the inner barrel flange seals the end barrel opening and is simultaneously connected with an inner barrel handle, a sampling hole is formed in the side wall of the inner barrel close to the sampling end, an air outlet hole is formed in the side wall of the inner barrel 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 is staggered with the sampling hole by a distance along the direction parallel to the axis of the inner sampler barrel in the direction close to the handle end; the two ends of the outer sampler barrel are open, the diameter of the outer sampler barrel is larger than that of the inner sampler barrel, and the inner sampler barrel can be inserted into the outer sampler barrel and rotate in the outer sampler barrel; an outer cylinder flange is arranged at one end of the outer cylinder of the sampler, a sampling hole and an air outlet hole which correspond to the inner cylinder of the sampler are arranged on the side wall of the outer cylinder positioned at the sampling end, marks '1' and '2' are arranged on the end face of the outer cylinder flange and correspond to the positions of the air outlet hole and the sampling hole respectively, and an arrow is marked on the end face of the inner cylinder flange and corresponds to the position of the air outlet hole; the inner cylinder flange and the outer cylinder flange are respectively connected with a high-temperature-resistant sealing gasket;
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';
The inner cylinder handle is provided with a small hole, and the small hole and the air outlet hole are positioned on the same bus and used for marking the position of the air outlet hole.
2. The feeding detection sampling device of a vertical mill powder concentrator of claim 1, wherein when the inner cylinder flange is tightly fastened
When the outer cylinder flange is abutted, the sampling end of the inner cylinder of the sampler does not exceed the cylinder opening of the outer cylinder of the sampler.
3. The feeding detection sampling device of a vertical mill powder concentrator of claim 1, wherein the inner cylinder of the sampler is straight
The diameter is 50-60mm, the diameter of the sampling hole on the inner cylinder of the sampler is set to be 30-40mm, and the diameter of the air outlet hole is set to be 5-10mm.
4. The feeding detection sampling device of a powder concentrator of a vertical mill as claimed in claim 1, wherein the flange baffle is welded with
A handle is connected.
5. The feeding detection sampling device of the vertical mill powder concentrator as claimed in claim 1, wherein the outer cylinder of the sampler is provided with
The diameter of the sampling hole is larger than that of the sampling hole on the inner barrel of the sampler.
6. Sampling method for detecting feeding of vertical mill powder concentrator by using sampling device as claimed in any one of claims 1-5
A method, comprising the steps of: a detection hole is formed in a proper position of a lower shell of the powder concentrator, which is close to a flange of the shell of the cylinder, and then a measurement pipeline is welded; when the sampling is not performed, 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 a plurality of bolt fastening components are used for fixing the flange baffle and the measuring pipeline flange; during sampling, firstly removing a flange baffle and a high-temperature-resistant sealing gasket, then firstly enabling a mark '1' on a flange of an outer cylinder of a sampler to face upwards, inserting the outer cylinder of the sampler into a measuring pipeline, secondly enabling an arrow at the end part of the flange of an inner cylinder of the sampler to face upwards, and then inserting the inner cylinder of the sampler into the outer cylinder of the sampler, meanwhile, enabling the flange of the outer cylinder and the high-temperature-resistant sealing gasket to tightly abut against the flange of the measuring pipeline, enabling the flange of the inner cylinder and the high-temperature-resistant sealing gasket to tightly abut against the flange of the outer cylinder, keeping the position for a certain time, enabling the pipeline of the inner cylinder of the sampler to enter a certain sample, and then rotating the inner cylinder of the sampler for 180 degrees, so that the arrow on the flange of the inner cylinder faces downwards, and enabling the outer cylinder of the sampler not to rotate along with the process; then, the inner and outer sampler barrels are pulled out together according to the position, and then the flange baffle and the high-temperature-resistant sealing gasket are used to seal 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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| CN115389270B true CN115389270B (en) | 2024-04-26 |
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| 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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