CN111744652A - Ash removal mechanism for observation window of coal feeder - Google Patents
Ash removal mechanism for observation window of coal feeder Download PDFInfo
- Publication number
- CN111744652A CN111744652A CN202010665414.1A CN202010665414A CN111744652A CN 111744652 A CN111744652 A CN 111744652A CN 202010665414 A CN202010665414 A CN 202010665414A CN 111744652 A CN111744652 A CN 111744652A
- Authority
- CN
- China
- Prior art keywords
- coal feeder
- observation
- rotating shaft
- lens
- observation lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 61
- 238000007790 scraping Methods 0.000 claims abstract description 19
- 238000007664 blowing Methods 0.000 claims abstract description 14
- 230000001680 brushing effect Effects 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000010248 power generation Methods 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 9
- 239000002817 coal dust Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000007667 floating Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/02—Feeding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
- B08B1/165—Scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Cleaning In General (AREA)
Abstract
The invention belongs to the technical field of coal conveying in thermal power generation equipment, and particularly relates to an ash removal mechanism for an observation window of a coal feeder. The rotating shaft is arranged on the observation lens in a penetrating mode in a matched mode and can axially rotate on the observation lens, the part, located in the inner cavity of the coal feeder, of the rotating shaft is connected with the scraping and brushing part, the scraping and brushing part is abutted to the inner mirror surface of the observation lens in a contacting mode, and the scraping and brushing part is driven to scrape and clean the inner mirror surface of the observation lens when the rotating shaft axially rotates; the casing of the coal feeder is also provided with a blowing duct, and an air outlet of the blowing duct faces the inner mirror surface of the observation lens.
Description
Technical Field
The invention belongs to the technical field of coal conveying in thermal power generation equipment, and particularly relates to an ash removal mechanism for an observation window of a coal feeder.
Background
The coal feeder is a metering type coal feeder matched with a coal mill in a thermal power plant, is mainly used for continuously and adjustably conveying coal to the coal mill, and is usually provided with an observation window in order to better observe the running conditions of a belt and internal equipment in the coal feeder. In the prior art, the observation window is usually formed by covering and installing a piece of transparent glass or resin on an observation hole, but the surface of the observation window is easily stained with coal dust, so that the definition of observation is influenced, and even observation cannot be carried out.
Disclosure of Invention
In order to solve the technical problem, the invention provides an ash cleaning mechanism for an observation window of a coal feeder, the observation window on the coal feeder comprises an observation hole arranged on a casing of the coal feeder, a transparent observation lens is fixedly covered and arranged on the observation hole,
the rotating shaft is arranged on the observation lens in a matched and penetrating way along the length direction of the rotating shaft and can axially rotate on the observation lens, the part of the rotating shaft, which is positioned in the inner cavity of the coal feeder, is fixedly connected with the scraping and brushing part, the scraping and brushing part is contacted and abutted with the inner lens surface of the observation lens, the rotating shaft drives the scraping and brushing part to synchronously axially rotate when axially rotating on the observation lens, thereby cleaning the inner lens surface of the observation lens,
the casing of the coal feeder is also provided with a blowing duct, and an air outlet of the blowing duct faces the inner mirror surface of the observation lens.
Preferably, the method comprises the following steps: a handle is arranged at the end part of the rotating shaft positioned outside the coal feeder along the length direction of the rotating shaft;
preferably, the method comprises the following steps: the observation lens is fixedly arranged on the inner cavity wall of the coal feeder shell;
preferably, the method comprises the following steps: the observation lens is round, the rotating shaft is coaxially matched and arranged on the observation lens in a penetrating way, the part of the shaft body of the rotating shaft, which is positioned in the inner cavity of the coal feeder and is close to the end part, extends outwards along the radial direction of the rotating shaft to form a connecting rod,
the scraping and brushing part is a scraping plate, the edge of a plate, far away from the inner mirror surface of the observation lens, on the scraping plate is connected with the rod body of the connecting rod in parallel, the scraping plate extends from the rod body of the connecting rod along the axial direction of the rotating shaft and is in contact and abutted with the inner mirror surface of the observation lens, and the edge of the plate, far away from the rotating shaft, on the scraping plate is outwards close to the outer edge of the inner mirror surface of;
preferably, the method comprises the following steps: the upper part area of the casing of the coal feeder protrudes outwards to form a protruding part, the protruding part is a barrel body which is in a conical column shape and is horizontal in the axial direction, the barrel body is in a flaring shape from outside to inside along the self axial direction, the inner end of the barrel body is communicated with an inner cavity of the coal feeder, the observation hole is formed in the outer end face of the barrel body, and the air blowing pore channel is formed in the cylinder wall of the barrel body.
Drawings
FIG. 1 is a cross-sectional view of the ash removal mechanism for the observation window of a coal feeder of the present invention,
figure 2 is a right side view of figure 1,
FIG. 3 is a schematic structural view of the fixed installation between the scraper and the connecting rod body through a bolt structure (the view is upward view on the basis of FIG. 2),
wherein, the machine shell of 1-coal feeder, 10-coal feeder, 101-lobe, 11-observation hole, 12-air blowing hole, 13-handle, 2-observation lens, 3-rotation axis, 32-connecting rod, 4-scraping brush, 5-pipeline, 6-compressed air source, 7-bolt structure.
Detailed Description
It should be noted that the words "front", "rear", "left" and "right" used in the description of the present invention refer to directions in fig. 1, and "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component (e.g., "coal feeder") for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention.
As shown in the attached drawing, the scheme of the invention is an ash removal mechanism for an observation window of a coal feeder, wherein a bulge part 101 is formed by horizontally bulging the partial area on a side surface casing of the coal feeder 1 outwards, the bulge part 101 is a cylinder body in a conical column shape with the horizontal axial direction, the cylinder body is in a flaring shape from outside to inside along the self axial direction, the flaring angle is shown in the attached drawing 1, the inner end of the cylinder body is communicated with an inner cavity of the coal feeder 1,
the observation window comprises a circular observation hole 11 arranged at the center of the vertical outer end surface of the cylinder body, a transparent observation lens 2 is fixedly arranged on the inner side wall of the vertical outer end surface and covers the observation hole 11, the observation lens 2 is circular,
the ash cleaning mechanism comprises a rotating shaft 3 which is coaxially matched and arranged on the observation lens 2 in a penetrating way along the length direction of the rotating shaft and can axially rotate on the observation lens 2, a connecting rod 32 is extended outwards along the radial direction of the rotating shaft 3 at the part of the shaft body of the rotating shaft 3, which is positioned in the inner cavity of the coal feeder 1 and is close to the end part, the scraping and brushing part 4 is a rubber scraper blade, a plate on the scraper blade, which is far away from the inner mirror surface of the observation lens 2, is connected with the rod body of the connecting rod 32 in parallel (and fixed by a bolt structure 7), the scraper blade horizontally extends towards the inner mirror surface direction of the observation lens 2 along the axial direction of the rotating shaft 3 on the rod body of the connecting rod 32, one end of the connecting rod 32, which is far away from,
the end part of the rotating shaft 3, which is positioned outside the coal feeder 1 along the length direction of the rotating shaft, is provided with a handle 13, the rotating shaft 3 can be firstly pulled outwards through the handle 13 until a plate on the scraping plate, which is just opposite to the inner mirror surface of the observation lens 2, abuts against the inner mirror surface of the observation lens 2 along the contact, under the abutting state, the rotating shaft 3 is controlled to axially rotate on the observation lens 2 through the handle 13 and drives the scraping plate to synchronously axially rotate, so that the inner mirror surface of the observation lens 2 is scraped and cleaned,
the cylindrical wall of the cylinder body is also provided with an air blowing duct 12 at the top, the air outlet of the air blowing duct 12 faces the inner mirror surface of the observation lens 2, and the air inlet of the air blowing duct 12 is communicated with a compressed air source 6 outside the coal feeder 1 through a pipeline 5.
A large amount of floating dust exists in the inner cavity of the coal feeder 1, and if the floating dust is attached and accumulated on the inner mirror surface of the observation lens 2 for a long time and has a large amount of dust accumulation, the scraper plate can possibly be fixed, so in the mechanism of the scheme, strong wind is continuously or frequently blown to the inner mirror surface of the observation lens 2 by using the blowing duct 12, and the dust and coal dust which are just attached to the inner mirror surface of the observation lens 2 are quickly blown away to keep clean; when the dust that has appeared is attached to the condition of being difficult to being blown away after observing in the lens 2 mirror surface, accessible handle 13 rotates the scraper blade repeatedly and strikes off, simultaneously, because the existence of pivot 3, can form certain blockking to the high pressure wind that blows off and lead to observing in the lens 2 mirror surface on the fractional region can't be blown to, this fractional region also can scrape the clearance through the scraper blade. Therefore, the cleaning mechanism is suitable for the complex and severe environment in the inner cavity of the coal feeder 1;
on the other hand, the coal feeder 1 is connected to the coal mill, and the working chamber of the coal mill is operated under a positive pressure (the pressure is higher than one atmosphere), which results in that the inner chamber of the coal feeder 1 is also under a positive pressure environment, and since the rotating shaft 3 can rotate axially on the observation lens 2, which indicates that the necessary gap exists at the connection position of the rotating shaft 3 and the observation lens 2, and the positive pressure environment in the coal feeder 1 can continuously press some coal powder and dust in the inner chamber out of the gap of the coal feeder 1, which affects the external environment,
when the blowing duct 12 continuously blows high-pressure air in the scheme, the inner mirror surface of the observation lens 2 can be kept clean, the gap can be continuously occupied by a large amount of clean high-pressure air, the back pressure is provided for the positive pressure environment in the coal feeder 1 similarly, the effect similar to gas sealing is achieved, the dust and coal powder in the coal feeder 1 are restrained or reduced from approaching the gap and being extruded out through the gap,
furthermore, the position of the observation lens 2 is similar to a groove structure, the observation lens 2 is equivalent to the position at the groove bottom, high-pressure air is equivalent to blow from the groove wall to the direction of the groove bottom (as shown in figure 1), the wall of the groove cavity of the groove plays a role in blocking high-pressure air which is blown to the inner mirror surface of the observation lens 2 and rebounds away, so that the groove cavity is continuously filled with clean high-pressure air, more stable air blocking can be formed near the inner mirror surface of the observation lens 2, and a small part area and a gap which are ' incapable of being blown to by the high-pressure air due to the blocking of the rotating shaft 3 ' on the inner mirror surface of the observation lens 2 ' can be covered, so that air sealing is formed better to prevent dust and coal dust from being pressed out through the gap; meanwhile, the approach of dust and coal dust to the inner mirror surface of the observation lens 2 can be reduced, which is also beneficial to maintaining the cleanness of the inner mirror surface of the observation lens 2,
however, if a mechanical seal is used (for example, a seal bearing is installed at the joint of the rotating shaft 3 and the viewing lens 2), since pulverized coal is fine powder, the pulverized coal easily enters the mechanical seal and gradually accumulates, and the rotating part at the joint is stuck for a long time, which is not the risk in the gas seal of the present embodiment.
Claims (5)
1. The utility model provides an ash removal mechanism for feeder observation window which characterized in that: the observation window comprises an observation hole (11) arranged on the shell of the coal feeder (1), a transparent observation lens (2) is fixedly covered and arranged on the observation hole (11),
the ash cleaning mechanism comprises a rotating shaft (3) which is arranged on the observation lens (2) in a matching and penetrating way along the length direction of the ash cleaning mechanism and can axially rotate on the observation lens (2),
the part of the rotating shaft (3) positioned in the inner cavity of the coal feeder (1) is connected with the scraping and brushing part (4), the scraping and brushing part (4) is abutted against the inner mirror surface of the observation lens (2), the rotating shaft (3) drives the scraping and brushing part (4) to synchronously rotate axially when rotating axially on the observation lens (2), so as to scrape and brush the inner mirror surface of the observation lens (2),
the shell of the coal feeder (1) is further provided with a blowing duct (12), and an air outlet of the blowing duct (12) faces towards the inner mirror surface of the observation lens (2).
2. The ash removal mechanism for the observation window of the coal feeder as set forth in claim 1, wherein: and a handle (13) is arranged at the end part of the rotating shaft (3) which is positioned outside the coal feeder (1) along the length direction of the rotating shaft.
3. The ash removal mechanism for the observation window of the coal feeder as set forth in claim 1, wherein: the observation lens (2) is fixedly arranged on the inner cavity wall of the shell of the coal feeder (1).
4. The ash removal mechanism for the observation window of the coal feeder as set forth in claim 1, wherein: the observation lens (2) is circular, the rotating shaft (3) is coaxially matched and arranged on the observation lens (2) in a penetrating way, a connecting rod (32) radially extends outwards along the rotating shaft (3) at the part of the shaft body of the rotating shaft (3) which is positioned in the inner cavity of the coal feeder (1) and is close to the end part,
scraping and brushing portion (4) be the scraper blade, keep away from on the scraper blade the board of observing lens (2) interior mirror surface along with the pole body parallel connection of connecting rod (32), the scraper blade is followed follow on the pole body of connecting rod (32) the axial extension and the contact of pivot (3) support by to observe lens (2) interior mirror surface, keep away from on the scraper blade the board of pivot (3) is along outwards being close to observe lens (2) interior mirror surface's outer edge.
5. The ash removal mechanism for the observation window of the coal feeder as set forth in claim 1, wherein: the coal feeder is characterized in that the upper part of the casing of the coal feeder (1) is outwards protruded to form a protruding portion (101), the protruding portion (101) is a barrel in the shape of an axially outward conical column, the barrel is in a flaring shape from outside to inside along the axial direction of the barrel, the inner end of the barrel is communicated with an inner cavity of the coal feeder (1), an observation hole (11) is formed in the outer end face of the barrel, and a blowing hole channel (12) is formed in the cylindrical wall of the barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010665414.1A CN111744652A (en) | 2020-07-11 | 2020-07-11 | Ash removal mechanism for observation window of coal feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010665414.1A CN111744652A (en) | 2020-07-11 | 2020-07-11 | Ash removal mechanism for observation window of coal feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111744652A true CN111744652A (en) | 2020-10-09 |
Family
ID=72711373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010665414.1A Pending CN111744652A (en) | 2020-07-11 | 2020-07-11 | Ash removal mechanism for observation window of coal feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111744652A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114192501A (en) * | 2021-12-10 | 2022-03-18 | 中国航天空气动力技术研究院 | Pneumatic dust keeper that removes of pneumatic conveying pipeline observation window |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203139967U (en) * | 2013-03-20 | 2013-08-21 | 上海申银机械(集团)有限公司 | Observation window of tapered mixing machine |
| CN207049979U (en) * | 2017-07-11 | 2018-02-27 | 湖北华电电力工程有限公司 | A kind of manual cleaning mechanism for the monitoring of power plant coal supply system |
| CN209177321U (en) * | 2018-10-30 | 2019-07-30 | 广州发展集团股份有限公司 | Observation window and feeder |
| CN212237698U (en) * | 2020-07-11 | 2020-12-29 | 国家能源集团泰州发电有限公司 | Ash removal mechanism for observation window of coal feeder |
-
2020
- 2020-07-11 CN CN202010665414.1A patent/CN111744652A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203139967U (en) * | 2013-03-20 | 2013-08-21 | 上海申银机械(集团)有限公司 | Observation window of tapered mixing machine |
| CN207049979U (en) * | 2017-07-11 | 2018-02-27 | 湖北华电电力工程有限公司 | A kind of manual cleaning mechanism for the monitoring of power plant coal supply system |
| CN209177321U (en) * | 2018-10-30 | 2019-07-30 | 广州发展集团股份有限公司 | Observation window and feeder |
| CN212237698U (en) * | 2020-07-11 | 2020-12-29 | 国家能源集团泰州发电有限公司 | Ash removal mechanism for observation window of coal feeder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114192501A (en) * | 2021-12-10 | 2022-03-18 | 中国航天空气动力技术研究院 | Pneumatic dust keeper that removes of pneumatic conveying pipeline observation window |
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