CN114955278A - Raw coal bunker outlet coal breakage system - Google Patents
Raw coal bunker outlet coal breakage system Download PDFInfo
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- CN114955278A CN114955278A CN202210557564.XA CN202210557564A CN114955278A CN 114955278 A CN114955278 A CN 114955278A CN 202210557564 A CN202210557564 A CN 202210557564A CN 114955278 A CN114955278 A CN 114955278A
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- 239000003245 coal Substances 0.000 title claims abstract description 216
- 238000004140 cleaning Methods 0.000 claims abstract description 28
- 230000007704 transition Effects 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims description 67
- 230000000712 assembly Effects 0.000 claims description 13
- 238000000429 assembly Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000010883 coal ash Substances 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
- B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
- B65D88/70—Large containers characterised by means facilitating filling or emptying preventing bridge formation using fluid jets
- B65D88/703—Air blowing devices, i.e. devices for the sudden introduction of compressed air into the container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
- B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
- B65D88/68—Large containers characterised by means facilitating filling or emptying preventing bridge formation using rotating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/10—Manholes; Inspection openings; Covers therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/222—Solid fuels, e.g. coal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention relates to a raw coal bunker outlet coal breakage system which comprises an inlet coal bunker, a coal breakage pipe tube, a pneumatic blockage cleaning device, a scraper rotating blockage cleaning device, a spile door, an access hole and a hyperbolic transition bin, wherein the inlet coal bunker is provided with a coal chute; the outlet of the hyperbolic transition bin is connected with the inlet of the coal breakage bobbin, the inlet coal bin is sleeved at the outlet of the hyperbolic transition bin, and the inlet of the hyperbolic transition bin is fixedly connected with the outer wall of the inlet coal bin; the pneumatic blockage removing device is arranged at the outlet of the inlet coal bunker, and the scraper rotary blockage removing device and the inserting plate door are arranged on the coal falling bobbin; the outer wall of the coal dropping bobbin is provided with an access hole, and the access hole is used for overhauling the rotary blockage cleaning device of the scraper. According to the invention, through the matching of the pneumatic blockage removing device, the scraper rotary blockage removing device and the inserting plate door, different devices are respectively arranged at the corresponding main blockage points of different pipe sections in the coal conveying process to remove blockage of adhesion, so that large-area arching blockage is avoided, the blockage removing efficiency of a coal dropping system at the outlet of a raw coal bunker is improved, and the system can realize continuous and uniform coal feeding.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a raw coal bunker outlet coal dropping system.
Background
In recent years, in order to improve the operational benefits of enterprises, high-moisture Indonesian coal is blended and burned, and meanwhile, water needs to be sprayed to reduce dust in the transportation process of domestic coal, so that the moisture in the burned coal is increased, the coal dropping pipe at the outlet of a raw coal bunker often forms an arch-forming coal plugging phenomenon in the running process, and particularly during rainy seasons, the coal dropping pipe is more frequently plugged, so that great hidden danger is brought to the stable running of a unit.
In the prior art, the blockage of the raw coal bunker is generally treated by adopting a manual sledge hammer to knock, mechanical vibration, an air cannon and a loosening machine, but the blockage removing effect of the blockage removing treatment of single blockage removing equipment is poor, so that an ideal effect is not achieved, and the situation of the blockage of the raw coal bunker still can be generated. In addition, the existing blockage removing equipment has obvious shaking phenomenon and instability of the blockage removing device under the condition that the raw coal hopper is full, and the production safety is influenced.
Disclosure of Invention
Technical problem to be solved
In view of the above disadvantages and shortcomings of the prior art, the present invention provides a raw coal bunker outlet coal dropping system, which solves the technical problems of low blockage cleaning efficiency of the raw coal bunker outlet coal dropping system and inconvenient maintenance of the raw coal bunker outlet coal dropping system.
(II) technical scheme
In order to achieve the above object, the raw coal bunker outlet coal dropping system of the present invention includes: the device comprises an inlet coal bin, a coal breakage bobbin, a pneumatic blockage cleaning device, a scraper rotary blockage cleaning device, a spile door, an access hole and a hyperbolic transition bin;
the outlet of the hyperbolic transition bin is connected with the inlet of the coal falling bobbin, the inlet coal bin is sleeved at the outlet of the hyperbolic transition bin, and the inlet of the hyperbolic transition bin is fixedly connected with the outer wall of the inlet coal bin;
the pneumatic blockage removing device is arranged at an outlet of the inlet coal bunker, and the scraper rotating blockage removing device and the inserting plate door are arranged on the coal dropping bobbin;
and an access hole is formed in the outer wall of the coal breakage bobbin and used for overhauling the scraper rotating blockage cleaning device.
Optionally, the scraper rotary blockage removing device comprises a first mechanical blockage removing mechanism and a second mechanical blockage removing mechanism;
the coal breakage bobbin comprises a first bobbin, a second bobbin, a third bobbin and a fourth bobbin, the first end of the first mechanical blockage removing mechanism is connected with the outlet of the first bobbin, the second end of the first mechanical blockage removing mechanism is connected with the inlet of the second bobbin, the first end of the second mechanical blockage removing mechanism is connected with the outlet of the third bobbin, and the second end of the second mechanical blockage removing mechanism is connected with the inlet of the fourth bobbin.
Optionally, the first mechanical blockage removing mechanism and the second mechanical blockage removing mechanism each comprise an annular shell, a scraper, a positioning ring and a driving assembly;
the driving assembly is arranged on the annular shell, the locating ring is connected with the annular shell in a rotating mode, the driving assembly is connected with the locating ring to drive the locating ring to rotate, and the scraper is connected with the inner wall of the locating ring.
Optionally, the scrapers each include a first scraper and a second scraper, and a second end of the first scraper and a first end of the second scraper are both connected to the inner wall of the positioning ring;
the first scraper of the first mechanical blockage removing mechanism is sleeved in the first bobbin and is abutted against the inner wall of the first bobbin; the second scraper of the first mechanical blockage removing mechanism is sleeved in the second bobbin and is abutted against the inner wall of the second bobbin;
a first end of the first scraper of the first mechanical blockage removing mechanism is close to the inlet of the first bobbin, and a second end of the second scraper of the first mechanical blockage removing mechanism is close to the outlet of the second bobbin;
the first scraper of the second mechanical blockage removing mechanism is sleeved in the third bobbin and is abutted against the inner wall of the third bobbin; the second scraper of the second mechanical blockage removing mechanism is sleeved in the fourth bobbin and is abutted against the inner wall of the fourth bobbin; the first end of the first scraper of the second mechanical blockage removing mechanism is close to the inserting plate door, and the second end of the second scraper of the second mechanical blockage removing mechanism is close to the outlet of the fourth bobbin.
Optionally, the driving assembly is a driving motor, a rotating shaft of the driving motor is meshed with an outer ring gear of the positioning ring, and the driving motor can drive the positioning ring to rotate.
Optionally, the raw coal bunker outlet coal dropping system further comprises a telescopic joint;
the first end of the telescopic joint is connected with the outlet of the coal dropping bobbin, the second end of the telescopic joint can be connected with a coal feeding pipeline, and the telescopic amount of the telescopic joint is not less than 50 mm.
Optionally, the pneumatic blockage removing device comprises a pneumatic blockage removing assembly, a compressed air source assembly and a detection assembly;
the pneumatic blockage removing component is arranged at an outlet of the inlet coal bunker and can be used for removing coal ash blocked in the inlet coal bunker;
the compressed air source assembly is communicated with the pneumatic blockage removing assembly through a pipeline and can convey compressed air to the pneumatic blockage removing assembly;
the detection assembly is arranged on the pneumatic blockage removing assembly, the pneumatic blockage removing assembly can release compressed air in the compressed air source assembly, and the detection device is used for detecting the water content in coal.
Optionally, the pneumatic unblocking assembly comprises a controller, a plurality of nozzle assemblies and a plurality of pulse solenoid valves;
a plurality of the nozzles are arranged at the outlet of the inlet coal bunker, and the nozzle assembly comprises a first nozzle opening towards the inlet direction of the inlet coal bunker and a second nozzle opening towards the inlet direction of the coal falling bobbin;
the plurality of pulse electromagnetic valves are respectively connected with the plurality of nozzle assemblies in a one-to-one correspondence manner, and are all communicated with the compressed air source assembly;
the controller with the pulse solenoid valve is connected, the controller can control pulse solenoid valve opens and stops.
Optionally, the gate includes a first gate valve and a second gate valve disposed opposite to each other;
the first gate valve and the second gate valve are arranged at the outlet of the second barrel, and the first gate valve can be matched with the second gate valve to open or close the outlet of the second barrel.
Optionally, the first gate valve and the second gate valve each include a motor, a gate, a lead screw, a rotating nut, and a housing;
the shell is arranged at the outlet of the second bobbin, and the rotating nut is rotatably connected with the shell;
the screw rod is sleeved in the shell, the first end of the screw rod is in threaded connection with the rotating nut, the second end of the screw rod is fixedly connected with the inserting plate, the inserting plate is arranged in the shell in a sliding mode, and the inserting plate of the first gate valve and the inserting plate of the second gate valve are oppositely arranged in the same horizontal plane;
the motor is arranged on the shell, and an output shaft of the motor is connected with the rotating nut.
(III) advantageous effects
The invention has the beneficial effects that: according to the invention, through the cooperation of the pneumatic blockage removing device, the scraper rotary blockage removing device and the inserting plate door, different blockage removing devices are respectively arranged at different pipe sections of the raw coal bunker coal dropping system corresponding to main blockage points in the coal conveying process to remove blockage in time for coal adhesion, so that large-area arching blockage is avoided, the blockage removing efficiency of the raw coal bunker outlet coal dropping system is greatly improved through the cooperation of the multi-position multi-level blockage removing devices, and the continuous and uniform coal feeding of the raw coal bunker outlet coal dropping system can be realized. The design of the raw coal bunker outlet coal dropping system fully considers the influence of the increase of the moisture content of the raw coal in rainy season, and the influence of the increase of the moisture content of the coal is effectively eliminated through the arrangement of the plurality of blockage clearing devices. And, this coal breakage bobbin one side of raw coal bunker export coal breakage system has seted up the access hole, and the setting of access hole is convenient for the staff to maintain prosthetic the device in the raw coal bunker export coal breakage system, still is favorable to the staff in time to master the condition of coal caking arch jam in the raw coal bunker export coal breakage system in order to avoid bringing huge hidden danger for the steady operation of unit.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a raw coal bunker outlet coal dropping system of the present invention;
fig. 2 is a schematic structural diagram of a nozzle of the pneumatic blockage removal device.
[ description of reference ]
1: an inlet bunker;
2: a hyperbolic transition bin;
3: a pneumatic blockage clearing device; 31: a nozzle assembly; 311: a first nozzle; 312: a second nozzle;
4: the scraper rotates and clears the blockage device; 41: a first mechanical blockage removal mechanism; 42: a second mechanical blockage removing mechanism; 411: a first scraper; 412: a second scraper;
5: a gate panel; 51: a first gate valve; 52: a second gate valve;
6: a coal breakage bobbin; 61: a first bobbin; 62: a second bobbin; 63: a third bobbin; 64: a fourth bobbin;
7: an expansion joint; 8: and (6) an access hole.
Detailed Description
For a better understanding of the above-described technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1, the present invention provides a raw coal bunker outlet coal dropping system, which includes: an inlet coal bunker 1, a coal dropping bobbin 6, a pneumatic blockage cleaning device 3, a scraper rotating blockage cleaning device 4, a spile door 5, an access hole 8 and a hyperbolic transition bin 2; the outlet of the hyperbolic transition bin 2 is connected with the inlet of the coal breakage bobbin 6, the inlet coal bin 1 is sleeved at the outlet of the hyperbolic transition bin 2, and the inlet of the hyperbolic transition bin 2 is fixedly connected with the outer wall of the inlet coal bin 1; the pneumatic blockage cleaning device 3 is arranged at the outlet of the inlet coal bunker 1, and the scraper rotary blockage cleaning device 4 and the inserting plate door 5 are arranged on the coal dropping bobbin 6; an access hole 8 is formed in the outer wall of the coal dropping bobbin 6, and the access hole 8 is used for overhauling the scraper rotating blockage cleaning device 4.
In the embodiment, the pneumatic blockage removing device 3, the scraper rotary blockage removing device 4 and the inserting plate door 5 are matched, different blockage removing devices are respectively arranged at different main blockage points corresponding to different pipe sections of a raw coal bunker coal dropping system in the coal conveying process to timely remove blockage of coal adhesion, large-area arching blockage is avoided, the pneumatic blockage removing device 3 is arranged at an outlet of an inlet coal bunker 1 to perform pneumatic blockage removal on an outlet of the inlet coal bunker 1 of the raw coal bunker outlet coal dropping system, blockage in the inlet coal bunker 1 is avoided, the scraper rotary blockage removing device 4 and the inserting plate door 5 are arranged on a coal dropping pipe 6, and the scraper rotary blockage removing device 4 and the inserting plate door 5 can timely remove coal dust and the like adhered in the coal dropping pipe 6. The arrangement of the multiple blockage clearing devices in a matched mode avoids the problem that only a single coal breakage structure part is cleared, and other parts in a coal breakage system are blocked by arching, greatly improves the blockage clearing efficiency of a coal breakage system at an outlet of a raw coal bunker, enables the coal breakage system of the raw coal bunker to realize continuous and uniform coal supply, and effectively solves the problem that the arching blockage is easy to occur due to the increase of the moisture of the raw coal in rainy seasons.
In addition, the outer wall of the coal dropping bobbin 6 of the raw coal bunker coal dropping system is provided with an access hole 8, and each blockage removing device of the coal dropping system at the outlet of the raw coal bunker, which is arranged at the access hole 8, is convenient for installation and maintenance of workers in the installation and use process, so that the labor intensity of the workers is reduced, and the working efficiency is improved. A hyperbolic transition bin 2 is arranged at the transition position of an inlet coal bin 1 and a coal breakage bobbin 6 of the raw coal bin outlet coal breakage system, after the upper portion of the hyperbolic transition bin 2 is welded with the outer wall of the inlet coal bin 1, the original states of the inner wall and the bin body of the inlet coal bin 1 are prevented from being damaged, external dust and moisture in the coal transportation process are effectively prevented from entering the raw coal bin outlet coal breakage system, and the possibility of coal arch blocking is further prevented from being increased.
In a preferred embodiment, the scraper rotary unblocking apparatus 4 comprises a first mechanical unblocking mechanism 41 and a second mechanical unblocking mechanism 42;
the coal dropping bobbin 6 comprises a first bobbin 61, a second bobbin 62, a third bobbin 63 and a fourth bobbin 64, wherein the first end of the first mechanical blockage removing mechanism 41 is connected with the outlet of the first bobbin 61, the second end of the first mechanical blockage removing mechanism 41 is connected with the inlet of the second bobbin 62, the first end of the second mechanical blockage removing mechanism 42 is connected with the outlet of the third bobbin 63, and the second end of the second mechanical blockage removing mechanism 42 is connected with the inlet of the fourth bobbin 64.
In the embodiment, the scraper rotating blockage cleaning device 4 is arranged on the coal chute tube 6, and the first mechanical blockage cleaning mechanism 41 and the second mechanical blockage cleaning mechanism 42 can be used for quickly and mechanically cleaning the blockage of the coal chute tube 6 comprehensively and quickly, so that the blockage of the coal chute tube 6 is avoided. In addition, the scraper rotating blockage cleaning device 4 utilizes two sets of scraper mechanical blockage cleaning mechanisms, ensures that all scrapers operate in the height of the whole coal chute 6, and avoids the existence of a cleaning blind area, thereby further solving the problem of coal blockage and avoiding the problem that the cleaning blind area is left in the previous configuration mode and structural form of single arrangement and the blockage problem of the coal chute 6 cannot be thoroughly solved.
Referring to fig. 1, each of the first mechanical blockage removing mechanism 41 and the second mechanical blockage removing mechanism 42 includes an annular housing, a scraper, a positioning ring, and a driving assembly; the driving assembly is arranged on the annular shell, the locating ring is connected with the annular shell in a rotating mode, the driving assembly is connected with the locating ring to drive the locating ring to rotate, and the scraper is connected with the inner wall of the locating ring.
In the embodiment, the rotating part of the scraper rotating mechanical blockage removing device is supported and positioned by a ball type positioning ring, so that the axial and radial runout of the first mechanical blockage removing mechanism 41 and the second mechanical blockage removing mechanism 42 is not more than 0.1mm in the working process; the transmission part adopts an external gear ball type locating ring to support the transmission structure for transmission, so that the first mechanical blockage removing mechanism 41 and the second mechanical blockage removing mechanism 42 can timely, comprehensively and quickly remove the blockage of the raw coal at the arching part of the coal breakage bobbin 6. In this embodiment, the annular shells of the first mechanical blockage removing mechanism 41 and the second mechanical blockage removing mechanism 42 are both made of wear-resistant 12Cr13 stainless steel plates, the service life of the annular shells exceeds 20 years, and frequent replacement of the shells of the first mechanical blockage removing mechanism 41 and the second mechanical blockage removing mechanism 42 in the use process is avoided. The scrapers of the first mechanical blockage cleaning mechanism 41 and the second mechanical blockage cleaning mechanism 42 are integrally forged by 42CrMo, so that the scrapers have high strength and toughness, high fatigue limit and multiple impact resistance, and the service life of the rotary mechanical blockage cleaning device of the scrapers is greatly prolonged.
In a preferred embodiment, the driving component is a driving motor, a rotating shaft of the driving motor is in meshed connection with an outer ring gear of the positioning ring, and the driving motor can drive the positioning ring to rotate. The scrapers comprise a first scraper 411 and a second scraper 412, and the second end of the first scraper 411 and the first end of the second scraper 412 are connected with the inner wall of the positioning ring; the first scraper 411 of the first mechanical blockage removing mechanism 41 is sleeved in the first bobbin 61 and abuts against the inner wall of the first bobbin 61; the second scraper 412 of the first mechanical blockage removing mechanism 41 is sleeved in the second bobbin 62 and is abutted against the inner wall of the second bobbin 62; a first end of a first scraper 411 of the first mechanical blockage removing mechanism 41 is close to the inlet of the first bobbin 61, and a second end of a second scraper 412 of the first mechanical blockage removing mechanism 41 is close to the outlet of the second bobbin 62; the first scraper 411 of the second mechanical blockage removing mechanism 42 is sleeved in the third bobbin 63 and is abutted with the inner wall of the third bobbin 63; the second scraper 412 of the second mechanical blockage removing mechanism 42 is sleeved in the fourth bobbin 64 and abuts against the inner wall of the fourth bobbin 64; a first end of the first scraper 411 of the second mechanical unblocking mechanism 42 is close to the inserting plate door 5, and a second end of the second scraper 412 of the second mechanical unblocking mechanism 42 is close to the outlet of the fourth bobbin 64.
In the above embodiment, the first end of the first scraper 411 of the first mechanical unblocking mechanism 41 is close to the inlet of the first bobbin 61, and the second end of the second scraper 412 of the first mechanical unblocking mechanism 41 is close to the outlet of the second bobbin 62. A first end of the first scraper 411 of the second mechanical unblocking mechanism 42 is close to the inserting plate door 5, and a second end of the second scraper 412 of the second mechanical unblocking mechanism 42 is close to the outlet of the fourth bobbin 64. The first scraper 411 and the second scraper 412 ensure that all scrapers operate in the height of the whole coal breakage bobbin 6 through the installation mode, the existence of a cleaning blind area is avoided, and the blockage of the arch part of the coal breakage bobbin 6 is cleaned comprehensively and quickly through the installation mode.
As shown in fig. 1, the raw coal bunker outlet coal dropping system further comprises a telescopic joint 7; the first end of the telescopic joint 7 is connected with the outlet of the coal dropping bobbin 6, the second end of the telescopic joint 7 can be connected with a coal feeding pipeline, and the telescopic amount of the telescopic joint 7 is not less than 50 mm. In this embodiment, the vibrations of this raw coal bunker export coal breakage system can effectually be alleviated in the setting of telescopic joint 7 for this raw coal bunker export coal breakage system even if open under the full-load operating mode and stop and do not have obvious rocking with the operation in-process, and this setting has reduced rocking of this system, very big improvement the security, has improved the life-span of the safe handling of this system.
Referring to fig. 1 and fig. 2, the pneumatic blockage removing device 3 comprises a pneumatic blockage removing assembly, a compressed air source assembly and a detection assembly; the pneumatic blockage clearing component is arranged at the outlet of the inlet coal bunker 1 and can clear coal ash blocked in the inlet coal bunker 1; the compressed air source assembly is communicated with the pneumatic blockage removing assembly through a pipeline and can convey compressed air to the pneumatic blockage removing assembly; the detection assembly is arranged on the pneumatic blockage removing assembly, the pneumatic blockage removing assembly can release compressed air in the compressed air source assembly, and the detection assembly is used for detecting the water content in coal.
The pneumatic blockage removing assembly comprises a controller, a plurality of nozzle assemblies 31 and a plurality of pulse electromagnetic valves; a plurality of nozzle assemblies 31 are arranged at the outlet of the inlet coal bunker 1, and each nozzle assembly 31 comprises a first nozzle 311 opening towards the inlet direction of the inlet coal bunker 1 and a second nozzle 312 opening towards the inlet direction of the coal dropping bobbin 6; the plurality of pulse electromagnetic valves are respectively connected with the plurality of nozzle assemblies 31 in a one-to-one correspondence manner, and are all communicated with the compressed air source assembly; the controller is connected with the pulse solenoid valve, and the controller can control the pulse solenoid valve to open and stop.
The pulse electromagnetic valve of the raw coal bunker outlet coal dropping system is controlled to be started at intervals after the detection assembly detects that the water content of raw coal is 9%, and the starting interval time set by the pulse electromagnetic valve is 20 min. The nozzle assemblies 31 are arranged around the original coal dropping port pipeline at intervals of 30 degrees, the blockage clearing omnidirectionality of the pneumatic blockage clearing assemblies is guaranteed, and the efficiency of the device is improved. In the above embodiment, compressed air is used as a power source, the air injection device is installed on the pipe wall at the outlet of the inlet bunker 1, the pulse solenoid valves connected to the nozzle assemblies 31 are controlled by the controller, and the single injection time of the nozzle assemblies 31 connected thereto and the air injection interval between the nozzle assemblies 31 are controlled by the pulse solenoid valves. The arrangement of the pneumatic blockage removing device 3 utilizes the compressed gas sprayed by the nozzle assembly 31 to sweep and remove the hardened coal adhered to the wall, thereby achieving the effect of blockage removal. Meanwhile, the high-speed airflow forms airflow which is diffused to the periphery in the hardened coal, so that the blockage removing area is further enlarged. Moreover, a layer of air cushion is formed between the coal and the pipe wall of the coal dropping system at the outlet of the raw coal bunker by the airflow sprayed by the nozzle assembly 31, so that the caking property between the coal and the pipe wall is reduced, and the arch formation and blockage are further prevented. The detection component in the pneumatic blockage removing device 3 is a coal moisture tester which is a novel intelligent automatic moisture tester and is used for testing the total moisture of coal. And, first nozzle 311 and second nozzle 312 communicate with the compressed air source subassembly through same connecting pipe, and the first nozzle 311 towards the entry direction of entry coal bunker 1 and the second nozzle 312 of the entry direction open-ended of coal breakage bobbin 6 can sweep the coal of hardening of entry coal bunker 1 and coal breakage bobbin 6 simultaneously and shovel off, and this kind of setting has further enlarged clear stifled area, has improved clear stifled efficiency, and the effectual knot that prevents blocks up encircles.
In a preferred embodiment, the gate 5 comprises a first gate valve 51 and a second gate valve 52, oppositely disposed; the first gate valve 51 and the second gate valve 52 are both arranged at the outlet of the second barrel 62, and the first gate valve 51 can be matched with the second gate valve 52 to open or close the outlet of the second barrel 62. The first gate valve 51 and the second gate valve 52 both comprise a motor, a gate, a screw rod, a rotating nut and a shell; the shell is arranged at the outlet of the second bobbin 62, and the rotating nut is rotationally connected with the shell; the screw rod is sleeved in the shell, the first end of the screw rod is in threaded connection with the rotating nut, the second end of the screw rod is fixedly connected with the inserting plate, the inserting plate is arranged in the shell in a sliding mode, and the inserting plate of the first inserting plate valve 51 and the inserting plate of the second inserting plate valve 52 are oppositely arranged in the same horizontal plane; the motor is arranged on the shell, and an output shaft of the motor is connected with the rotating nut.
In the embodiment, the first gate valve 51 and the second gate valve 52 which are opened in two directions are arranged at the outlet of the second barrel 62, and the shell and the coal chute pipe 6 are arranged in a sealing way, so that the leakage phenomenon in the opening and closing process of the gate is avoided. The thickness of the shell of the flashboard valve is 10mm, and the material is 12Cr13 stainless steel. The running tracks of the first gate valve 51 and the second gate valve 52 have an automatic cleaning function to prevent the junction of the gate and the coal chute pipe 6 from blocking, in one embodiment, a scraper protruding toward the gate is provided at the junction of the second chute pipe 62 and the gate casing, and the scraper can abut against the gate, and automatically cleans residual coal on the gate when the gate is opened and closed. The plug board is in threaded connection with the rotating nut through a screw rod, an output shaft of the motor drives the rotating nut to rotate during operation, the rotating nut which is fixed axially drives the screw rod to do reciprocating motion in the axial direction, the screw rod which reciprocates in the axial direction drives the plug board to slide in the shell, and the outlet of the second barrel is opened or closed through the sliding of the plug board. The arrangement of the inserting plate door 5 solves the problem that coal is blocked due to arching when the economic coal is mixed and burned, ensures the safety of the economic coal mixing and burning and the power generation production of the unit, and has simple structure and convenient use.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a raw coal bunker outlet coal breakage system which characterized in that, raw coal bunker outlet coal breakage system includes: the device comprises an inlet coal bin, a coal breakage bobbin, a pneumatic blockage cleaning device, a scraper rotary blockage cleaning device, a spile door, an access hole and a hyperbolic transition bin;
the outlet of the hyperbolic transition bin is connected with the inlet of the coal falling bobbin, the inlet coal bin is sleeved at the outlet of the hyperbolic transition bin, and the inlet of the hyperbolic transition bin is fixedly connected with the outer wall of the inlet coal bin;
the pneumatic blockage removing device is arranged at an outlet of the inlet coal bunker, and the scraper rotating blockage removing device and the inserting plate door are arranged on the coal dropping bobbin;
and an access hole is formed in the outer wall of the coal breakage bobbin and used for overhauling the scraper rotating blockage cleaning device.
2. The raw coal bunker outlet coal breakage system of claim 1 wherein the scraper rotary blockage removal device comprises a first mechanical blockage removal mechanism and a second mechanical blockage removal mechanism;
the coal breakage bobbin comprises a first bobbin, a second bobbin, a third bobbin and a fourth bobbin, the first end of the first mechanical blockage removing mechanism is connected with the outlet of the first bobbin, the second end of the first mechanical blockage removing mechanism is connected with the inlet of the second bobbin, the first end of the second mechanical blockage removing mechanism is connected with the outlet of the third bobbin, and the second end of the second mechanical blockage removing mechanism is connected with the inlet of the fourth bobbin.
3. The raw coal bunker outlet coal breakage system of claim 2 wherein the first mechanical blockage removal mechanism and the second mechanical blockage removal mechanism each comprise an annular housing, a scraper, a spacer ring, and a drive assembly;
the driving assembly is arranged on the annular shell, the locating ring is connected with the annular shell in a rotating mode, the driving assembly is connected with the locating ring to drive the locating ring to rotate, and the scraper is connected with the inner wall of the locating ring.
4. The raw coal bunker outlet coal dropping system of claim 3, wherein the scrapers each comprise a first scraper and a second scraper, and a second end of the first scraper and a first end of the second scraper are each connected to an inner wall of the position ring;
the first scraper of the first mechanical blockage removing mechanism is sleeved in the first bobbin and is abutted against the inner wall of the first bobbin; the second scraper of the first mechanical blockage removing mechanism is sleeved in the second bobbin and is abutted against the inner wall of the second bobbin;
a first end of the first scraper of the first mechanical blockage removing mechanism is close to the inlet of the first bobbin, and a second end of the second scraper of the first mechanical blockage removing mechanism is close to the outlet of the second bobbin;
the first scraper of the second mechanical blockage removing mechanism is sleeved in the third bobbin and is abutted against the inner wall of the third bobbin; the second scraper of the second mechanical blockage removing mechanism is sleeved in the fourth bobbin and is abutted against the inner wall of the fourth bobbin; the first end of the first scraper of the second mechanical blockage removing mechanism is close to the inserting plate door, and the second end of the second scraper of the second mechanical blockage removing mechanism is close to the outlet of the fourth bobbin.
5. The raw coal bunker outlet coal dropping system of claim 3, wherein the driving component is a driving motor, a rotating shaft of the driving motor is in meshed connection with an outer ring gear of the positioning ring, and the driving motor can drive the positioning ring to rotate.
6. The raw coal bunker outlet coal dropping system of any one of claims 1-5, wherein the raw coal bunker outlet coal dropping system further comprises a telescoping section;
the first end of the telescopic joint is connected with the outlet of the coal dropping bobbin, the second end of the telescopic joint can be connected with a coal feeding pipeline, and the telescopic amount of the telescopic joint is not less than 50 mm.
7. The raw coal bunker outlet coal breakage system of any one of claims 1-5, wherein the pneumatic blockage removal device comprises a pneumatic blockage removal assembly, a compressed air source assembly, and a detection assembly;
the pneumatic blockage removing component is arranged at an outlet of the inlet coal bunker and can be used for removing coal ash blocked in the inlet coal bunker;
the compressed air source assembly is communicated with the pneumatic blockage removing assembly through a pipeline and can convey compressed air to the pneumatic blockage removing assembly;
the detection assembly is arranged on the pneumatic blockage clearing assembly, the pneumatic blockage clearing assembly can release compressed air in the compressed air source assembly, and the detection device is used for detecting the water content in coal.
8. The raw coal bunker outlet coal breakage system of claim 7 wherein the pneumatic unblocking assembly includes a controller, a plurality of nozzle assemblies, and a plurality of pulse solenoid valves;
a plurality of the nozzle assemblies are arranged at the outlet of the inlet coal bunker, and each nozzle assembly comprises a first nozzle opening towards the inlet direction of the inlet coal bunker and a second nozzle opening towards the inlet direction of the coal falling bobbin;
the plurality of pulse electromagnetic valves are respectively connected with the plurality of nozzle assemblies in a one-to-one correspondence manner, and are communicated with the compressed air source assembly;
the controller with the pulse solenoid valve is connected, the controller can control pulse solenoid valve opens and stops.
9. The raw coal bunker outlet coal breakage system of claim 2, wherein the gate includes first and second opposing gate valves;
the first gate valve and the second gate valve are arranged at the outlet of the second barrel, and the first gate valve can be matched with the second gate valve to open or close the outlet of the second barrel.
10. The raw coal bunker outlet coal breakage system of claim 9 wherein the first gate valve and the second gate valve each comprise a motor, a gate, a lead screw, a rotating nut, and a housing;
the shell is arranged at the outlet of the second bobbin, and the rotating nut is rotatably connected with the shell;
the screw rod is sleeved in the shell, the first end of the screw rod is in threaded connection with the rotating nut, the second end of the screw rod is fixedly connected with the inserting plate, the inserting plate is arranged in the shell in a sliding mode, and the inserting plate of the first gate valve and the inserting plate of the second gate valve are oppositely arranged in the same horizontal plane;
the motor is arranged on the shell, and an output shaft of the motor is connected with the rotating nut.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210557564.XA CN114955278A (en) | 2022-05-19 | 2022-05-19 | Raw coal bunker outlet coal breakage system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210557564.XA CN114955278A (en) | 2022-05-19 | 2022-05-19 | Raw coal bunker outlet coal breakage system |
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Application publication date: 20220830 |