CN117919870A - Dust suppression system and method for strip mine crushing station - Google Patents
Dust suppression system and method for strip mine crushing station Download PDFInfo
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- CN117919870A CN117919870A CN202410133946.9A CN202410133946A CN117919870A CN 117919870 A CN117919870 A CN 117919870A CN 202410133946 A CN202410133946 A CN 202410133946A CN 117919870 A CN117919870 A CN 117919870A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention relates to the technical field of coal mine environmental protection, in particular to a dust suppression system and method for a strip mine crushing station, comprising a discharging platform, a cover body, a steel structure support and a plate-and-frame filter press, and further comprising: the primary sedimentation device comprises a primary sedimentation adjusting tank, wherein a sludge concentration tank and an inclined tube sedimentation tank are arranged on one side of the primary sedimentation adjusting tank, and a first lifting pump is arranged between the primary sedimentation adjusting tank and the inclined tube sedimentation tank; the middle water tank is arranged at the other side of the inclined tube sedimentation tank, and a sludge screw pump is arranged at one side of the sludge concentration tank; according to the invention, air and coal dust are sucked through the air dust removal unit, waste water and coal dust are discharged to the primary sedimentation regulating tank, and under the cooperation of equipment such as the inclined tube sedimentation tank, the sludge concentration tank, the plate-and-frame filter press and the quartz sand filter, the waste water is filtered for multiple times, so that the waste water is recycled, water resources are saved, and meanwhile, the coal dust and sludge in the waste water are dried, dehydrated and cake-making is realized, so that the recovery of the coal dust is realized, and the waste of resources is reduced.
Description
Technical Field
The invention relates to the technical field of coal mine environmental protection, in particular to a dust suppression system and method for a strip mine crushing station.
Background
The semi-continuous mining process has the advantages of flexibility, strong climbing capability, high production efficiency and low operation cost, along with the continuous maturity of process technology and equipment technology, the process technology and equipment level are developed faster in recent years, the crushing station is core equipment and intermediate links of the semi-continuous mining process, is generally arranged in and outside a strip mine mining field, shortens the truck transportation distance, plays a role in starting up and down, and is a 'cross' point of the intermittent process and the continuous process, namely, materials enter a production system from the crushing station through a truck. The open operation of the truck in the coal unloading and unloading process can generate a large amount of unordered coal dust, so that the working condition of equipment is poor, faults are easy to occur, meanwhile, the unorganized emission and accumulation of the coal dust have fire and explosion hidden danger, the serious problems of endangering the health of workers, potential safety hazards, causing environmental pollution and the like are brought, zero tolerance is brought to the environment, and a plurality of coal production enterprises are stopped and rectified due to the overrun of the coal dust of the crushing station.
The current open-pit mine crushing stations are provided with dust suppression systems, the dust suppression systems are provided with a relatively sealed space on the crushing stations, air and coal dust are pumped into a dust removal scrubber through a fan, the coal dust in the air is dusted, then clean air is discharged, and generated wastewater is reused after simple filtration, but the dust suppression systems have the following defects: ① . The coal dust and sludge in the wastewater are simply filtered and discharged, the coal dust in the sludge is not recovered, the waste of the coal dust is caused, and the discharged sludge coal dust also pollutes the environment; ② . At the inlet and outlet of the system, vehicles frequently enter and exit, and coal dust is easy to spread outwards: ③ . The air inlet part of the system adopts a fan to suck air and coal dust, and when the coal dust with large particles passes through the fan at the air inlet part, the coal dust is easy to collide with the fan blades, the motor and the like of the fan, and the fan is easy to damage, so that the service life is shortened.
Disclosure of Invention
The invention aims to provide a dust suppression system and method for a strip mine crushing station, which can be used for filtering waste water generated after dust fall for a plurality of times, dehydrating and drying coal dust and making cakes so as to recycle the coal dust, and protecting a fan at an air inlet in the system and avoiding damage caused by large-particle coal dust passing through the fan at the air inlet.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a strip mine crushing station presses down dirt system, includes platform, cover body, steel construction support and the plate and frame pressure filter of unloading, still includes:
The primary sedimentation device comprises a primary sedimentation adjusting tank, wherein a sludge concentration tank and an inclined tube sedimentation tank are arranged on one side of the primary sedimentation adjusting tank, and a first lifting pump is arranged between the primary sedimentation adjusting tank and the inclined tube sedimentation tank;
The middle water tank is arranged on the other side of the inclined tube sedimentation tank, one side of the sludge concentration tank is provided with a sludge screw pump, and the other side of the primary sedimentation regulating tank is also provided with a sludge pump;
a second lifting pump is arranged between the quartz sand filter and the middle water tank, and a clean water tank for storing clean water is arranged at the other side of the plate-and-frame filter press;
The air dust removing unit comprises a supporting beam, a box body, a water inlet power mechanism, a housing, an air inlet mechanism and an air exhaust mechanism, wherein the supporting beam and a steel structure bracket are mutually bolted, and the box body is bolted at the top of the supporting beam;
The exhaust cover, the quantity of exhaust cover is a plurality of and communicates the bottom that sets up at the box, the bottom intercommunication of exhaust cover is provided with the wet return, and the other end of wet return runs through to the outside of the cover body and extends to the top of just settling the equalizing basin.
Preferably, the wind inlet mechanism comprises a wind inlet pipe, a wind machine protection assembly, a transverse pipe and a first wind machine, wherein the wind inlet pipes are respectively communicated with the two sides of the box body, the first wind machine is fixed in the wind inlet pipe, the transverse pipe is communicated with the bottom of the wind inlet pipe, the wind inlet covers are further communicated with the bottom of the transverse pipe, and the wind machine protection assembly prevents coal dust with large particles from contacting with the first wind machine.
Preferably, the fan protection component includes the first blocking net of fixing in the tuber pipe inside, the upper and lower both sides of going into the tuber pipe communicate respectively and are provided with casing and lower casing, the inner wall slip of going up the casing is provided with movable frame, movable frame's fixed surface has the second blocking net, go into hydrodynamic mechanism and provide the power of doing the reciprocal motion from top to bottom to movable frame, movable frame's bottom bolt has the spiller, lower casing's bottom intercommunication is provided with the inclined tube, and the other end and the box intercommunication of inclined tube, the opposite side of lower casing still runs through and is provided with a plurality of spray pipe, the opposite side intercommunication of spray pipe is provided with communicating pipe, go into hydrodynamic mechanism to the communicating pipe provides water, go into the inboard of tuber pipe still be fixed with the annular sword that the cooperation of second blocking net was used.
Preferably, the fan protection assembly further comprises a supporting plate which is bolted in the lower shell, a spring telescopic rod is bolted at the top of the supporting plate, a plugging block is bolted at the top end of the spring telescopic rod, and a push rod matched with the plugging block is bolted at the bottom of the movable frame.
Preferably, the water inlet power mechanism comprises a water power assembly, a water throwing assembly, a transmission assembly and an air stirring assembly, wherein the water power assembly generates power by water and drives the movable frame to reciprocate up and down through the transmission assembly.
Preferably, the hydrodynamic component comprises a communicating box, the inside rotation of communicating box is connected with the runner, the opposite side intercommunication of communicating box is provided with the water inlet pipe, and the other end of water inlet pipe communicates with the exit end of high-pressure water pump each other, the fixed surface of runner has a plurality of blade, the opposite side of runner is fixed with the drive post, the other end of drive post runs through the outside to the communicating box, the drive component is including rotating the column spinner of connecting in the housing inboard, one side the column spinner passes through belt transmission with the drive post and is connected, adjacent pass through belt transmission between the column spinner and be connected, the both ends of column spinner all the bolt has the carousel, and the carousel is located the inside of housing, go up the casing and extend to the inside of housing, the drive component is still including the movable rod of bolt in movable frame top both sides, and the movable rod runs through the casing and runs through the department rotation with it and be connected, the top bolt of movable rod has the lifter, the opposite side rotation of carousel is connected with the actuating lever, and the bottom of actuating lever is articulated each other with the lifter.
Preferably, the water delivery assembly comprises a water delivery pipe which is communicated with the other side of the communicating box, a plurality of vertical pipes are arranged at the bottom end of the water delivery pipe in a communicating mode, transverse pipes are arranged above the inner side of the box body, a plurality of atomizing nozzles are arranged at the bottom of the transverse pipes in a communicating mode, the bottom ends of the vertical pipes penetrate through the inside of the box body and are mutually communicated with the transverse pipes, and the other ends of the communicating pipes are mutually communicated with the water delivery pipe.
Preferably, the air stirring assembly comprises a vertical rod and stirring blades, one end of the vertical rod penetrates through the inside of the housing and is connected with the rotating column through bevel gear transmission, the penetrating part of the vertical rod and the housing is rotationally connected, the bottom end of the vertical rod penetrates through the inside of the box, the penetrating part of the vertical rod and the box is rotationally connected, and the stirring blades are welded on the surface of the vertical rod.
Preferably, the exhaust mechanism comprises an air delivery duct, a second fan and a U-shaped pipe, the U-shaped pipe is arranged at an inlet and an outlet of the cover body, the air delivery duct is communicated with the box body, the second fan is fixed on the inner side of the exhaust cover, the other end of the air delivery duct is communicated with an air delivery pipe, the other end of the air delivery pipe is communicated with the U-shaped pipe, and a plurality of exhaust covers are arranged on the surface of the U-shaped pipe.
A dust suppression method for a strip mine crushing station comprises the following steps:
Step A, when the vehicle runs into a cover body, unloading coal to a crushing station on a unloading platform, starting a first fan to enable air and floating coal dust to enter the air inlet cover, and then entering a box body through a transverse pipe and an air inlet pipe, wherein a first blocking net intercepts large-particle coal dust;
Step B, starting a high-pressure water pump to enable water in the clean water tank to enter the communication box through the water inlet pipe, enabling the rotating wheel and the blades to rotate by the water, enabling the movable frame to reciprocate up and down through a series of transmissions, pushing the intercepted large-particle coal dust into the lower shell, and flushing the large-particle coal dust into the box by the water sprayed from the water spraying pipe;
Step C, spraying water from an atomizing nozzle, generating atomized water in a box body to reduce dust, driving a vertical rotating rod and blades to rotate by a rotating column to stir air to uniformly distribute the air, and starting a second fan to enable the air after dust removal to form an air curtain at an inlet and an outlet of a cover body;
Step D, the wastewater enters a primary sedimentation regulating tank through a discharge cover and a water return pipe, coal dust in the water is precipitated in the primary sedimentation regulating tank, a first lifting pump is started, the wastewater in the primary sedimentation regulating tank is pumped into an inclined pipe sedimentation tank, water flowing out of the inclined pipe sedimentation tank enters an intermediate water tank, and impurities such as coal dust are precipitated and discharged into a sludge concentration tank;
e, starting a sludge pump, pumping the coal dust precipitated in the primary sedimentation regulating tank into a sludge concentration tank, starting a sludge screw pump, pumping the coal dust and sludge in the sludge concentration tank into a plate-and-frame filter press, dehydrating the coal dust and sludge by the plate-and-frame filter press to prepare cakes, and discharging filtrate of the plate-and-frame filter press into the sludge concentration tank again;
And F, starting a second lifting pump, pumping the wastewater in the middle water tank into a quartz sand filter, filtering the wastewater by the quartz sand filter, and discharging the filtered wastewater into a clean water tank.
Compared with the prior art, the invention has the following beneficial effects:
1. According to the invention, air and coal dust are sucked through the air dust removal unit, waste water and coal dust are discharged to the primary sedimentation regulating tank, and under the cooperation of equipment such as the inclined tube sedimentation tank, the sludge concentration tank, the plate-and-frame filter press and the quartz sand filter, the waste water is filtered for multiple times, so that the waste water is recycled, water resources are saved, and meanwhile, the coal dust and sludge in the waste water are dried, dehydrated and cake-making is realized, so that the recovery of the coal dust is realized, and the waste of resources is reduced.
2. According to the invention, the first fan is started to enable air and coal dust to enter the box body, and the fan protection assembly can block large-particle coal dust in the operation process, prevent the large-particle coal dust from passing through the first fan, simultaneously timely discharge the large-particle coal dust into the box body, prevent the coal dust from accumulating at the air inlet pipe, ensure the fluidity of air in the air inlet pipe in the operation process, and prevent the large-particle coal dust from returning back into the air inlet pipe.
3. According to the invention, through the arrangement of the hydrodynamic component, the water throwing component, the transmission component and the air stirring component, the water throwing component throws water into the box body to clean and remove dust on air, the hydrodynamic component can drive the fan protection component to normally operate under the cooperation of the transmission component by utilizing the thrust generated by the movement of the water, so that the effect of saving energy consumption is achieved, and the air stirring component stirs the air entering the box body, so that the air is fully contacted with water mist, and the dust reducing effect is improved.
4. The invention discharges the air in the box body after cleaning and dust falling through the air exhaust mechanism, and generates an air curtain at the inlet and outlet of the cover body, thereby effectively preventing the coal dust leakage caused by the vehicle in and out.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention with the cover removed;
FIG. 3 is a schematic view of the structure of the air dust removal unit of the present invention;
FIG. 4 is a schematic view of the structure of the case and its surface in the present invention;
FIG. 5 is a schematic view of a partial construction of a blower protector assembly and a drive assembly according to the present invention;
FIG. 6 is a cross-sectional view of an air inlet duct according to the present invention;
FIG. 7 is a schematic view of the invention after the block is lowered;
FIG. 8 is a schematic view of the structure of the movable frame and its surface in the present invention;
FIG. 9 is a schematic view of the structure of the annular knife of the present invention;
FIG. 10 is a cross-sectional view of the case of the present invention;
FIG. 11 is a schematic view of the construction of the hydrodynamic assembly and the water delivery assembly of the present invention;
FIG. 12 is a cross-sectional view of the communication box of the present invention;
fig. 13 is a schematic structural view of an exhaust mechanism in the present invention.
In the figure: 1. a discharging platform; 2. a cover body; 3. a steel structure bracket; 4. an air dust removal unit; 41. a support beam; 42. a case; 43. a water inlet power mechanism; 431. a hydrodynamic component; 4311. a communication box; 4312. a rotating wheel; 4313. a blade; 4314. a drive column; 432. a water delivery assembly; 4321. a water pipe; 4322. a standpipe; 4323. an atomizing nozzle; 4324. a transverse tube; 433. a water inlet pipe; 434. an air stirring assembly; 4341. a vertical rotating rod; 4342. stirring the leaves; 435. a transmission assembly; 4351. a spin column; 4352. a turntable; 4353. a lifting plate; 4354. a movable rod; 4355. a driving rod; 44. a housing; 45. an air inlet mechanism; 451. an air inlet pipe; 452. a fan protection assembly; 4521. an upper housing; 4522. a lower housing; 4523. an inclined tube; 4524. a first barrier net; 4525. an annular knife; 4526. a movable frame; 4527. a second barrier net; 4528. a push rod; 4529. a shovel blade; 45210. a communicating pipe; 45211. a water spray pipe; 45212. a support plate; 45213. a spring telescoping rod; 45214. a block; 453. a transverse tube; 454. a wind inlet cover; 455. a first fan; 46. an exhaust mechanism; 461. an air delivery duct; 462. a second fan; 463. an air supply pipe; 464. a U-shaped tube; 465. an exhaust hood; 47. an exhaust hood; 48. a water return pipe; 5. a primary sedimentation regulating tank; 6. a middle pool; 7. a pipe chute sedimentation tank; 8. a sludge concentration tank; 9. a plate and frame filter press; 10. a quartz sand filter; 11. a clean water tank; 12. a sludge pump; 13. a first lift pump; 14. a second lift pump; 15. a high pressure water pump; 16. a sludge screw pump.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-13, a dust suppression system for a strip mine crushing station comprises a discharging platform 1, a cover body 2, a steel structure support 3 and a plate-and-frame filter press 9, wherein the cover body 2 is arranged on the outer side of the steel structure support 3, the cover body 2 can adopt tarpaulin like a tent, a relatively sealed space is formed on the discharging platform 1, an inlet and an outlet are formed on two sides of the cover body 2, the system further comprises a primary sedimentation regulating tank 5, a middle water tank 6, a quartz sand filter 10, an air dust removal unit 4 and a discharge cover 47, one side of the primary sedimentation regulating tank 5 is provided with a sludge concentration tank 8 and an inclined tube sedimentation tank 7, a first lift pump 13 is arranged between the primary sedimentation regulating tank 5 and the inclined tube sedimentation tank 7, the first lift pump 13 is connected with the primary sedimentation regulating tank 5 through a pipeline, the middle water tank 6 is arranged on the other side of the inclined tube sedimentation tank 7, the inclined tube sedimentation tank 7 is connected with the middle water tank 6 through a pipeline, one side of the sludge concentration tank 8 is provided with a sludge screw pump 16, the sludge screw pump 16 is connected with the sludge concentration tank 8 through a pipeline, the sludge screw pump 16 is connected with the plate-and-frame filter press 9 through a pipeline, the other side of the primary sedimentation regulating tank 5 is also provided with a sludge pump 12, one end of the sludge pump 12 is connected with the primary sedimentation regulating tank 5 through a pipeline, the other end of the sludge pump 12 is connected with the sludge concentration tank 8 through a pipeline, a second lifting pump 14 is arranged between the quartz sand filter 10 and the middle water tank 6, one end of the second lifting pump 14 is connected with the middle water tank 6 through a pipeline, the other end of the second lifting pump 14 is connected with the quartz sand filter 10 through a pipeline, the other side of the plate-and-frame filter press 9 is provided with a clean water tank 11, and the air dust removing unit 4 comprises a supporting beam 41, a box 42, the water inlet power mechanism 43, the housing 44, the air inlet mechanism 45 and the exhaust mechanism 46, the supporting beam 41 and the steel structure bracket 3 are mutually bolted, the box body 42 is bolted on the top of the supporting beam 41, the number of the exhaust covers 47 is a plurality of and is communicated with the bottom of the box body 42, the bottom of the exhaust cover 47 is communicated with the water return pipe 48, and the other end of the water return pipe 48 penetrates to the outer side of the cover body 2 and extends to the upper side of the primary sedimentation adjusting tank 5.
The air inlet mechanism 45 comprises an air inlet pipe 451, a fan protection assembly 452, transverse pipes 453 and a first fan 455, the number of the air inlet pipes 451 is a plurality of, and the air inlet pipes 451 are respectively communicated with two sides of the box body 42, the first fan 455 is fixed in the air inlet pipe 451, the transverse pipes 453 are communicated with the bottom ends of the air inlet pipes 451, the bottoms of the transverse pipes 453 are also communicated with a plurality of air inlet hoods 454, the fan protection assembly 452 prevents large-particle coal dust from contacting the first fan 455, the fan protection assembly 452 comprises a first blocking net 4524 fixed in the air inlet pipes 451, the first fan 455 is started, air can pass through the air inlet hoods 454, the transverse pipes 453 and the air inlet pipes 451, the first blocking net 4524 can block the large-particle coal dust in the air, the condition that the service life of the first fan 455 is shortened is avoided, and small-particle coal dust can pass through the first blocking net 4524 and enter the interior of the box body 42 through the air inlet pipes 451; the upper and lower sides of the air inlet pipe 451 are respectively communicated with an upper shell 4521 and a lower shell 4522, the inner wall of the upper shell 4521 is slidably provided with a movable frame 4526, the surface of the movable frame 4526 is fixedly provided with a second blocking net 4527, the surface of the movable frame 4526 is provided with power for up-down reciprocating motion, the bottom of the movable frame 4526 is bolted with a shovel 4529, the bottom of the lower shell 4522 is communicated with an inclined pipe 4523, the other end of the inclined pipe 4523 is communicated with the box 42, the other side of the lower shell 4522 is also penetrated and provided with a plurality of water spray pipes 45211, the other side of the water spray pipe 45211 is communicated with a communicating pipe 45210, the water inlet power mechanism 43 supplies water to the communicating pipe 45210, a large amount of coal dust can be accumulated on the surface of the movable frame 4526 in the process of blocking the first blocking net 4524, in order to prevent the first blocking net 4524 from being blocked, the movable frame 4526 can drive the second blocking net 4527 and the shovel 4529 to descend together in the process of moving downwards, the scraper knife 4529 pushes coal dust on the surface of the first blocking net 4524 downwards in the descending process, the design of the second blocking net 4527 can ensure that the movable frame 4526 can normally flow in the descending process, air in the air inlet pipe 451 can normally flow, the scraper knife 4529 pushes large-particle coal dust into the lower shell 4522, meanwhile, water is sprayed out of the water spraying pipe 45211 through the communicating pipe 45210, the water is used for flushing the large-particle coal dust on the scraper knife 4529, the large-particle coal dust and the water enter the box body 42 through the inclined pipe 4523, the movable frame 4526 drives the second blocking net 4527 and the scraper knife 4529 to ascend in the ascending process, the annular knife 4525 matched with the second blocking net 4527 is also fixed on the inner side of the air inlet pipe 451, the annular knife 4525 contacts with the second blocking net 4527, the second blocking net 4527 intercepts part of the coal dust in place of the first blocking net 4524 when the second blocking net 4527 is in the air inlet pipe 451, after the second blocking net 4527 ascends, the annular knife 4525 scoops the dust on the surface of the second blocking net 4527; in order to prevent dust entering the lower housing 4522 from being sucked into the air inlet pipe 451 again by the first fan 455, the fan protection assembly 452 further comprises a supporting plate 45212, the supporting plate 45212 is bolted to the inner part of the lower housing 4522, the top of the supporting plate 45212 is bolted with a spring telescopic rod 45213, the top of the spring telescopic rod 45213 is bolted with a blocking block 45214, the bottom of the movable frame 4526 is bolted with a push rod 4528 matched with the blocking block 45214, before the movable frame 4526 descends, the spring telescopic rod 45213 is in an extended state under the action of internal spring force, the blocking block 45214 is used for blocking the joint between the lower housing 4522 and the air inlet pipe 451, the blocking block 45214 is also used for blocking the outlet of the spray pipe 45211 in real time, when the movable frame 4526 descends to push coal dust, the movable frame 4526 descends to the lowest position, the push rod 4528 contacts with the blocking block 45214, the blocking block 45214 descends, the closure between the air inlet pipe 451 and the lower housing 4522 is temporarily released, then large particle coal dust pushed by the shovel blade 4529 enters the interior of the lower housing 4522, and after the blocking block 45214 descends, the outlet of the water spray pipe 45211 is in an open state, the water spray pipe 45211 sprays out water to wash away the large particle coal dust, at this time, the movable frame 4526 is positioned at the connection between the lower housing 4522 and the air inlet pipe 451 to prevent the coal dust from returning to the air inlet pipe 451, and when the movable frame 4526 ascends, the blocking block 45214 also starts to ascend under the reaction force of the spring expansion link 45213 and re-blocks the connection between the lower housing 4522 and the air inlet pipe 451 to prevent the coal dust entering the lower housing 4522 from being re-drawn back to the air inlet pipe 451, the fan protection assembly 452 not only can block the lower large particle coal dust and prevent the large particle coal dust from passing through the first fan 455, but also can timely discharge the large particle coal dust into the box 42 during operation, prevent that the coal dust from accumulating in air inlet pipe 451 department, and can guarantee the mobility of air in air inlet pipe 451 in the operation in-process, but also can prevent that large granule coal dust from getting back into in air inlet pipe 451 again.
The water inlet power mechanism 43 comprises a water power component 431, a water throwing component 432, a transmission component 435 and an air stirring component 434, the water power component 431 generates power by utilizing water and drives the movable frame 4526 to reciprocate up and down through the transmission component 435, the water power component 431 comprises a communication box 4311, a rotating wheel 4312 is rotationally connected in the communication box 4311, the other side of the communication box 4311 is communicated with a water inlet pipe 433, the other end of the water inlet pipe 433 is mutually communicated with the outlet end of the high-pressure water pump 15, a plurality of blades 4313 are fixed on the surface of the rotating wheel 4312, a transmission column 4314 is fixed on the other side of the rotating wheel 4312, the other end of the transmission column 4314 penetrates to the outer side of the communication box 4311, the transmission column 4314 is rotationally connected with the penetrating part of the communication box 4311, the high-pressure water pump 15 is started to enable clean water in the clean water tank 11 to enter the communication box 4311 through the water inlet pipe 433, the high-pressure water is enabled to pass through the communication box 4311, the blade 4313 and the rotating wheel 4312 can be pushed to rotate, the rotating wheel 4312 drives the transmission column 4314 to rotate, the transmission assembly 435 comprises a rotating column 4351, the rotating column 4351 is rotationally connected to the inner side of the housing 44, the rotating column 4351 on one side is in transmission connection with the transmission column 4314 through a belt, adjacent rotating columns 4351 are in transmission connection through the belt, the surfaces of the rotating column 4351 and the transmission column 4314 are provided with double-groove belt pulleys, each double-groove belt pulley is connected through a single belt, no belt crossing one belt pulley exists, the transmission wrap angle of the belt is met between each belt transmission, the rotating columns 4351 are respectively bolted with a rotary disk 4352, the rotary disk 4352 is positioned in the housing 44, the upper shell 4521 extends to the inner side of the housing 44, the transmission assembly 435 further comprises a movable rod 4354 which is bolted to the two sides of the top of the movable frame 4526, the movable rod 4354 penetrates the upper shell 4521 and is rotationally connected with the penetrating part, the top of the movable rod 4354 is bolted with a lifting plate 4353, the other side of the rotary plate 4352 is rotatably connected with a driving rod 4355, the bottom of the driving rod 4355 is hinged with the lifting plate 4353, the rotary wheel 4312 can drive the transmission column 4314 to rotate in the process of pushing the rotary wheel 4312 and the blades 4313 to rotate by high-pressure water flow, the transmission column 4314 drives all the rotary columns 4351 to rotate through a belt, the rotary columns 4351 drive the rotary plates 4352 on two sides to rotate, the rotary plates 4352 drive the upper ends of the driving rods 4355 to do circular motion in the rotating process, the lower ends of the driving rods 4355 drive the lifting plate 4353 to do up-down reciprocating motion, and the lifting plate 4353 drives the movable rod 4354 and the movable frame 4526 to do up-down reciprocating motion, so that the effect of providing power for up-down reciprocating motion of the movable frame 4526 is achieved.
The water delivery component 432 comprises a water delivery pipe 4321, the water delivery pipe 4321 is communicated with the other side of the communication box 4311, a plurality of vertical pipes 4322 are arranged at the bottom end of the water delivery pipe 4321 in a communicated mode, a transverse pipe 4324 is arranged above the inner side of the box 42, a plurality of atomizing nozzles 4323 are arranged at the bottom end of the transverse pipe 4324 in a communicated mode, the bottom end of the vertical pipe 4322 penetrates into the box 42 and is communicated with the transverse pipe 4324, the other end of the communication pipe 45210 is communicated with the water delivery pipe 4321, water entering the interior of the communication box 4311 can enter the vertical pipe 4322 and the communication pipe 45210 respectively through the water delivery pipe 4321, water entering the communication pipe 45210 is sprayed out from a spray pipe 45211, water entering the interior of the vertical pipe 4322 is sprayed out from an atomizing nozzle 4323 through the transverse pipe 4324, mist water is generated inside the box 42, small particle coal dust is reduced in dust through the air entering the box 42 through the air inlet pipe 451, and large particle coal dust enters the box 42 through the inclined pipe 4523 under the action of the sprayed water at the spray pipe 45211.
The air stirring assembly 434 comprises a vertical rotating rod 4341 and stirring blades 4342, one end of the vertical rotating rod 4341 penetrates into the housing 44 and is connected with the rotating column 4351 through bevel gear transmission, the penetrating part of the vertical rotating rod 4341 and the housing 44 is rotationally connected, the bottom end of the vertical rotating rod 4341 penetrates into the box body 42, the penetrating part of the vertical rotating rod 4341 and the box body 42 is rotationally connected, the stirring blades 4342 are welded on the surface of the vertical rotating rod 4341, the rotating column 4351 can drive the vertical rotating rod 4341 to rotate through bevel gears in the rotating process, the vertical rotating rod 4341 drives the stirring blades 4342 to rotate, and the stirring blades 4342 scatter and rotate air entering the box body 42 to enable the air to be fully contacted with water mist, so that the dust removing effect on the air is improved.
The exhaust mechanism 46 comprises an air delivery duct 461, a second fan 462 and a U-shaped pipe 464, the U-shaped pipe 464 is arranged at an inlet and an outlet of the cover body 2, the air delivery duct 461 is communicated with the box body 42, the second fan 462 is fixed at the inner side of the exhaust cover 465, the other end of the air delivery duct 461 is communicated with an air delivery pipe 463, the other end of the air delivery pipe 463 is communicated with the U-shaped pipe 464, a plurality of exhaust covers 465 are arranged on the surface of the U-shaped pipe 464 in a communicated manner, the exhaust covers 465 face the inner side of the cover body 2, the second fan 462 is opened, the air in the box body 42 after dust removal can be pumped into the air delivery duct 461, and then is exhausted from the exhaust covers 465 through the air delivery pipes 463 and the U-shaped pipe 464, so that an air curtain is generated at the inlet and outlet of the two sides of the cover body 2, and the coal dust is effectively prevented from diffusing to the outside.
The generated wastewater inside the tank 42 flows into the discharge hood 47 together with the coal dust, and then flows into the primary sedimentation tank 5 through the return pipe 48 to be treated later.
A dust suppression method for a strip mine crushing station comprises the following steps:
Step A, when the vehicle runs into the cover body 2, unloading coal to the crushing station on the unloading platform 1, starting the first fan 455, enabling air and floating coal dust to enter the air inlet cover 454, then entering the box body 42 through the transverse pipe 453 and the air inlet pipe 451, and enabling the first blocking net 4524 to intercept large-particle coal dust so as to protect the first fan 455 at the air inlet position;
Step B, starting a high-pressure water pump 15, enabling water in the clean water tank 11 to enter a communication box 4311 through a water inlet pipe 433, pushing a rotating wheel 4312 and blades 4313 to rotate by the water, driving a transmission column 4314, a rotating column 4351 and a rotating disc 4352 to rotate, driving a movable frame 4526 to reciprocate up and down by the rotating disc 4352 through a driving rod 4355 and a lifting plate 4353, pushing intercepted large-particle coal dust into a lower shell 4522 by the movable frame 4526 in the up-and-down reciprocating motion, preventing the air inlet pipe 451 from being blocked, and flushing the large-particle coal dust into a box 42 from the lower shell 4522 and an inclined pipe 4523 by the water sprayed from a water spraying pipe 45211;
Step C, water is sprayed from an atomization nozzle 4323 after passing through a water pipe 4321, a vertical pipe 4322 and a transverse pipe 4324, atomized water is generated in a box 42 and contacts with coal dust in the air to reduce the dust, a rotary column 4351 drives a vertical rotary rod 4341 and a blade 4313 to rotate so as to stir the air to uniformly distribute the air, the dust removal effect is improved, a second fan 462 is started, the air after dust removal is discharged from a discharge cover 47 after passing through an air delivery duct 461, an air delivery pipe 463 and a U-shaped pipe 464, and an air curtain is formed at an inlet and an outlet of a cover body 2 to prevent the coal dust from being outwards diffused due to the vehicle entering and exiting;
step D, the waste water generated by dust removal enters a primary sedimentation adjusting tank 5 through a discharge cover 47 and a water return pipe 48, coal dust in the water is precipitated in the primary sedimentation adjusting tank 5, a first lifting pump 13 is started, the waste water in the primary sedimentation adjusting tank 5 is pumped into an inclined tube sedimentation tank 7, water flowing out of the inclined tube sedimentation tank 7 enters an intermediate water tank 6, and impurities such as the coal dust are precipitated and discharged into a sludge concentration tank 8;
E, starting a sludge pump 12, pumping the coal dust precipitated in the primary sedimentation regulating tank 5 into a sludge concentration tank 8, starting a sludge screw pump 16, pumping the coal dust and sludge in the sludge concentration tank 8 into a plate-and-frame filter press 9, and dehydrating and cake-making the coal dust and sludge by the plate-and-frame filter press 9 to realize the effect of recycling the coal dust, wherein the filtrate of the plate-and-frame filter press 9 is discharged into the sludge concentration tank 8 again;
and F, starting a second lift pump 14, pumping the wastewater in the middle water tank 6 into a quartz sand filter 10, filtering the wastewater through the quartz sand filter 10, and discharging clean water into a clean water tank 11 to realize the effect of recycling the water, so that water resources are saved, and the returned wastewater has better impurity removal effect through multi-level precipitation and filtration.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
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| CN202410133946.9A CN117919870A (en) | 2024-01-31 | 2024-01-31 | Dust suppression system and method for strip mine crushing station |
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| CN202410133946.9A CN117919870A (en) | 2024-01-31 | 2024-01-31 | Dust suppression system and method for strip mine crushing station |
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Cited By (1)
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| CN119771873A (en) * | 2024-12-31 | 2025-04-08 | 徐州吉安矿业科技有限公司 | A dust removal process for open-pit crushing station in coal mine |
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